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Mascaró Triedo CE, Karar S, Abunemeh M, Portier K. Effect of nose twitching on the pupillary dilation in awake and anesthetized horses. Front Vet Sci 2024; 11:1412755. [PMID: 39036796 PMCID: PMC11258756 DOI: 10.3389/fvets.2024.1412755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 06/26/2024] [Indexed: 07/23/2024] Open
Abstract
Pupillometry is used in humans to monitor pain, nociception and analgesia. This single-center, non-randomized, non-blinded intervention trial, evaluated the effect of nose twitching on the pupil size in awake, sedated, and anesthetized horses. Pupil height (H) and length (L) were measured before (Be) and after (Af) nose twitching in fourteen non-painful adult awake horses (T0). The percentage of variation (PSV) was calculated (PSVTn = [(TnAf-TnBe)/TnBe]*100). Measurements were repeated (Tn) after acepromazine (0.04 mg kg-1 IV) (T1), romifidine (0.04 mg kg-1 IV) (T2), morphine (0.1 mg kg-1 IV) (T3), after anesthesia induction with diazepam (0.05 mg kg-1 IV) and ketamine (2.2 mg kg-1 IV), at the time the horse was placed on the operating table (T4) and when the expiratory fraction of sevoflurane was 2% (T5). HAf vs. HBe, LAf vs. LBe as well as PSVH vs. PSVL at each time were compared with a Mann-Whitney Wilcoxon test. The PSVL and PSVH, as well as HBe and LBe over time were compared with the Skillings-Mack test followed by a Wilcoxon test for paired data to make pairwise comparisons (Tn + 1 vs. Tn). In non-sedated horses (T0), the application of the nose twitch induced a significant increase in pupil length (LT0Be: 17.09 [16.05; 19.67] mm versus LT0Af: 19.52 [18.74; 21.40]) mm (p = 0.004). Thirty minutes after acepromazine administration (T1), nose twitching induced a significant increase in pupil length (LT1Be: 16.45 [14.80; 18.66] mm versus LT1Af 18.31 [17.20; 20.52] mm) (p = 0.016) and height (HT1Be: 8.44 [5.68; 12.04] mm versus HT1Af: 11.09 [7.97; 14.3] mm) (p < 0.001). PSVHT1 was significantly greater than PSVLT1 (p = 0.025). PSVH was higher at T1 than at T0 (p = 0.04). It was also significantly higher at T1 than at T2 (p < 0.001). Romifidine induced mydriasis (HT2Be 16.95 [14.73; 18.77] mm versus HT1Be 8.44 [5.68; 12.04] mm) (p < 0,001) (LT2Be 19.66 [18.45; 20.41] mm versus LT1Be 16.45 [14.80; 18.66] mm) (p < 0.001). The results suggest that nose twitching induced a pupillary dilation in the awake horse. This effect was potentiated after the administration of acepromazine but disappeared after the administration of romifidine.
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Affiliation(s)
| | - Sahra Karar
- VetAgro Sup, CREFAC, Université de Lyon, Marcy l’Etoile, France
| | - Maha Abunemeh
- VetAgro Sup, CREFAC, Université de Lyon, Marcy l’Etoile, France
| | - Karine Portier
- VetAgro Sup, CREFAC, Université de Lyon, Marcy l’Etoile, France
- Centre de Recherche en Neurosciences de Lyon, INSERM, CRNL U1028 UMR5292, Trajectoire, Université Claude Bernard Lyon 1, Bron, France
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Mieszczański P, Kołacz M, Trzebicki J. Opioid-Free Anesthesia in Bariatric Surgery: Is It the One and Only? A Comprehensive Review of the Current Literature. Healthcare (Basel) 2024; 12:1094. [PMID: 38891169 PMCID: PMC11171472 DOI: 10.3390/healthcare12111094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/13/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Opioid-free anesthesia (OFA) is a heterogeneous group of general anesthesia techniques in which the intraoperative use of opioids is eliminated. This strategy aims to decrease the risk of complications and improve the patient's safety and comfort. Such potential advantages are particularly beneficial for selected groups of patients, among them obese patients undergoing laparoscopic bariatric surgery. Opioids have been traditionally used as an element of balanced anesthesia, and replacing them requires using a combination of coanalgesics and various types of local and regional anesthesia, which also have their side effects, limitations, and potential disadvantages. Moreover, despite the growing amount of evidence, the empirical data on the superiority of OFA compared to standard anesthesia with multimodal analgesia are contradictory, and potential benefits in many studies are being questioned. Additionally, little is known about the long-term sequelae of such a strategy. Considering the above-mentioned issues, this study aims to present the potential benefits, risks, and difficulties of implementing OFA in bariatric surgery, considering the current state of knowledge and literature.
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Affiliation(s)
- Piotr Mieszczański
- 1st Department of Anaesthesiology and Intensive Care, Medical University of Warsaw, Lindleya 4 Str., 02-005 Warsaw, Poland; (M.K.); (J.T.)
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Konno M, Niwa H, Kitayama M, Hirota K. Video versus ultrasound pupillometry for detecting increased pupillary diameters due to nociceptive stimuli: a prospective observational study. J Anesth 2024; 38:191-197. [PMID: 38189944 DOI: 10.1007/s00540-023-03297-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 12/06/2023] [Indexed: 01/09/2024]
Abstract
PURPOSE Ultrasound pupillometry (UP) is a potential alternative to video pupillometry (VP) for assessing changes in patients' pupillary diameter (ΔPD) due to surgical nociception, but the reproducibility of UP and VP has been unclear. We evaluated the reproducibility of nociceptive ΔPD measured with both methods. SUBJECTS AND METHODS This prospective observational trial with 15 healthy volunteers aged ≥ 18 years was conducted at a Japanese teaching hospital. The ΔPD due to tetanic stimuli randomly applied at 10-60 mA was measured with VP and UP. The primary outcome was the correlation between the ΔPD measured with VP and that measured with UP. The secondary outcome was the agreement between the methods. We also evaluated ΔPD pattern changes due to the raised pain intensity in each method. RESULTS The noxious ΔPD values of UP were weakly but significantly correlated with those of VP (Spearman's ρ = 0.38, p < 0.001). A significant constant error was identified between the two measurements (Bland-Altman: mean of the difference in ΔPD (VP - UP), - 0.4 [95% CI: - 0.52 to - 0.28, p < 0.001], generalized estimating equation: a beta estimator of ΔPD: 0.41, [95% CI: 0.26-0.56, p < 0.001]). The ΔPD pattern changes due to the raised tetanic stimuli were almost the same in the two methods. CONCLUSION Due to the significant constant error, we consider the reproducibility of the measured ΔPD between UP and VP moderate. Trial registry number UMIN 000047145. Prior to the subjects' enrollment, the trial was registered with the University Hospital Medical Information Network (Principal investigator: Mao Konno, Date of registration: 3.11.2022). https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000053778 .
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Affiliation(s)
- Mao Konno
- Department of Anesthesiology, Hirosaki University Hospital, 53 Honcho, Hirosaki, Aomori, 036-8563, Japan
| | - Hidetomo Niwa
- Department of Community Medicine for Perioperative Management, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan.
| | - Masato Kitayama
- Department of Surgery, Hirosaki University Hospital, 53 Honcho, Hirosaki, Aomori, 036-8563, Japan
| | - Kazuyoshi Hirota
- Department of Community Medicine for Perioperative Management, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan
- Department of Anesthesiology, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan
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López de Audícana-Jimenez de Aberasturi Y, Vallejo-De la Cueva A, Aretxabala-Cortajarena N, Rodriguez-Nuñez C, Pelegrin-Gaspar PM, Gil-Garcia ZI, Rodriguez-Borrajo MJ, Margüello-Fernandez AA, Parraza-Diez N. The pupillary dilation reflex to a nociceptive stimulus as a tool for analgesia management: A diagnostic study. Aust Crit Care 2024; 37:230-235. [PMID: 37573155 DOI: 10.1016/j.aucc.2023.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 06/12/2023] [Accepted: 06/18/2023] [Indexed: 08/14/2023] Open
Abstract
BACKGROUND More than 70% of patients demonstrate pain after endotracheal aspiration. Tools are needed to objectify the need for analgesia in non-communicative critically ill patients. OBJECTIVE The objective of this study was to identify the lowest intensity electrical stimulus for detecting pain before daily care interventions. METHODS Study of diagnostic tests to assess pupillometry to detect pain through the pupillary dilation response to noxious stimuli versus the Behavioural Pain Scale. Patients older than 18 years, under analgosedation, subjected to invasive ventilation, baseline Behavioural Pain Scale of 3, and Richmond Agitation-Sedation Scale between -1 and -4 were studied. We assessed the Behavioural Pain Scale and the pupillary dilation response to 10, 20, 30, and 40 mA stimuli. We studied the diagnostic performance based on sensitivity and specificity, negative predictive value, positive predictive value, and accuracy of the selected points after the different stimulations. AlgiScan® Pupillometer measured the pupillary dilation response. The presence of pain was considered as a Behavioural Pain Scale score of ≥4. Significance was defined as p <0.05. RESULTS Measurements were performed on 31 patients. In the 20 mA stimulus, we found an area under the curve of 0.85 (0.69-1.0). The cut-off point of pupillary dilation was 11.5%, with a sensitivity of 100% (34.2-100) and a specificity of 75.9% (57.9-87.8). This point had an accuracy of 77.4 (60.2-88.6) and a Youden's Index of 0.8. CONCLUSIONS Pupillary variation measurement during a 20 mA stimulus could help assess the need for analgesia before potentially painful interventions. Further studies are needed to confirm this. REGISTRATION Phase 1 of the project PUPIPAIN ClinicalTrials.gov Identifier: NCT04078113.
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Affiliation(s)
- Yolanda López de Audícana-Jimenez de Aberasturi
- Vitoria-Gasteiz School of Nursing, University of the Basque Country (UPV/EHU), Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain; Bioaraba Health Research Institute, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain; Osakidetza Basque Health Service, Araba University Hospital, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain.
| | - Ana Vallejo-De la Cueva
- Bioaraba Health Research Institute, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain; Osakidetza Basque Health Service, Araba University Hospital, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain.
| | | | - Cesar Rodriguez-Nuñez
- Osakidetza Basque Health Service, Araba University Hospital, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain.
| | | | - Zuriñe Itsaso Gil-Garcia
- Osakidetza Basque Health Service, Araba University Hospital, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain.
| | - Mª Jose Rodriguez-Borrajo
- Vitoria-Gasteiz School of Nursing, University of the Basque Country (UPV/EHU), Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain; Osakidetza Basque Health Service, Araba University Hospital, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain.
| | | | - Naiara Parraza-Diez
- Bioaraba Health Research Institute, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain; Osakidetza Basque Health Service, Araba University Hospital, Jose Atxotegi, 01009 Vitoria-Gasteiz, Spain; REDISSEC, Health Services Research on Chronic Patients Network, Madrid, Spain.
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Huang H, Qiu Y, Gu G, Mei X, Pang L, Zhang C, Ran M, Li M. The value of pupillary diameter in evaluating pain perception after awakening in patients undergoing general anesthesia during orthopedic surgery. BMC Anesthesiol 2024; 24:61. [PMID: 38336612 PMCID: PMC10854081 DOI: 10.1186/s12871-024-02428-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND The pupillary response to tetanic electrical stimulation reflects the balance between nociceptive stimulation and analgesia. Although pupillary pain index (PPI) was utilized to predict postoperative pain, it depended on tetanic stimulation and was complex. We aim to describe the potential relationship between PD in the presence of surgical stimulation and pain levels after awakening. METHODS According to the Verbal Rating Scale (VRS) score after extubation, the patients were divided into painless group (VRS = 0) and pain group (VRS ≥ 1). Pupillary diameter (PD) and pupillary light reflex velocity (PLRV) were compared between two groups when patients entered the operating room (T1), before incision (T2), 10 s after incision (T3), 30 s after incision (T4), 1 h after incision (T5), at the end of surgery (T6), shortly after extubation (T7), and when patients expressed pain clearly (T8). The magnitude of PD change (ΔPD) compared to the baseline value after anesthesia induction (T2) was calculated. The correlations between pupillary parameters and pain after awakening were calculated. RESULTS Patients with VRS ≥ 1 had greater PD than painless patients at T3-7 (P = 0.04, 0.04, 0.003, <0.001, <0.001), and it was positively correlated with VRS score after awakening at T4-7 (r = 0.188, 0.217, 0.684, 0.721). The ability of T6ΔPD to predict VRS ≥ 1 was strong [threshold: 20.53%, area under the curve (AUC): 0.93, 95% confidence interval (CI): 0.89-0.97 ]. CONCLUSION Our study indicates that PD is a useful index to direct the individualized analgesics used during operation, to better avoid the occurrence of pain during the postoperative emergence period. TRIAL REGISTRATION This study was registered with the Chinese Clinical Trial Registry (registration number: ChiCTR2000040908, registration date: 15/12/2020).
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Affiliation(s)
- Huang Huang
- Center for Rehabilitation Medicine, Department of Anesthesiology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, 310014, Zhejiang, China
| | - Yinuo Qiu
- Department of Anesthesiology, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Guoxin Gu
- Department of Anesthesiology, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Xiangyang Mei
- Center for Rehabilitation Medicine, Department of Anesthesiology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, 310014, Zhejiang, China
| | - Liwei Pang
- Department of Anesthesiology, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Chuangxin Zhang
- Department of Anesthesiology, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Mingzi Ran
- Department of Anesthesiology, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China.
| | - Mengmeng Li
- Department of Anesthesiology, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China.
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Laferrière-Langlois P, Morisson L, Jeffries S, Duclos C, Espitalier F, Richebé P. Depth of Anesthesia and Nociception Monitoring: Current State and Vision For 2050. Anesth Analg 2024; 138:295-307. [PMID: 38215709 DOI: 10.1213/ane.0000000000006860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
Anesthesia objectives have evolved into combining hypnosis, amnesia, analgesia, paralysis, and suppression of the sympathetic autonomic nervous system. Technological improvements have led to new monitoring strategies, aimed at translating a qualitative physiological state into quantitative metrics, but the optimal strategies for depth of anesthesia (DoA) and analgesia monitoring continue to stimulate debate. Historically, DoA monitoring used patient's movement as a surrogate of awareness. Pharmacokinetic models and metrics, including minimum alveolar concentration for inhaled anesthetics and target-controlled infusion models for intravenous anesthesia, provided further insights to clinicians, but electroencephalography and its derivatives (processed EEG; pEEG) offer the potential for personalization of anesthesia care. Current studies appear to affirm that pEEG monitoring decreases the quantity of anesthetics administered, diminishes postanesthesia care unit duration, and may reduce the occurrence of postoperative delirium (notwithstanding the difficulties of defining this condition). Major trials are underway to further elucidate the impact on postoperative cognitive dysfunction. In this manuscript, we discuss the Bispectral (BIS) index, Narcotrend monitor, Patient State Index, entropy-based monitoring, and Neurosense monitor, as well as middle latency evoked auditory potential, before exploring how these technologies could evolve in the upcoming years. In contrast to developments in pEEG monitors, nociception monitors remain by comparison underdeveloped and underutilized. Just as with anesthetic agents, excessive analgesia can lead to harmful side effects, whereas inadequate analgesia is associated with increased stress response, poorer hemodynamic conditions and coagulation, metabolic, and immune system dysregulation. Broadly, 3 distinct monitoring strategies have emerged: motor reflex, central nervous system, and autonomic nervous system monitoring. Generally, nociceptive monitors outperform basic clinical vital sign monitoring in reducing perioperative opioid use. This manuscript describes pupillometry, surgical pleth index, analgesia nociception index, and nociception level index, and suggest how future developments could impact their use. The final section of this review explores the profound implications of future monitoring technologies on anesthesiology practice and envisages 3 transformative scenarios: helping in creation of an optimal analgesic drug, the advent of bidirectional neuron-microelectronic interfaces, and the synergistic combination of hypnosis and virtual reality.
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Affiliation(s)
- Pascal Laferrière-Langlois
- From the Maisonneuve-Rosemont Research Center, CIUSSS de l'Est de L'Ile de Montréal, Montreal, Quebec, Canada
- Department of Anesthesiology and Pain Medicine, Montreal University, Montreal, Quebec, Canada
| | - Louis Morisson
- Department of Anesthesiology and Pain Medicine, Montreal University, Montreal, Quebec, Canada
| | - Sean Jeffries
- Department of Experimental Surgery, McGill University, Montreal, Quebec, Canada
| | - Catherine Duclos
- Department of Anesthesiology and Pain Medicine, Montreal University, Montreal, Quebec, Canada
| | - Fabien Espitalier
- Department of Anesthesia and Intensive Care, University Hospitals of Tours, Tours, France
| | - Philippe Richebé
- From the Maisonneuve-Rosemont Research Center, CIUSSS de l'Est de L'Ile de Montréal, Montreal, Quebec, Canada
- Department of Anesthesiology and Pain Medicine, Montreal University, Montreal, Quebec, Canada
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Oh SK, Won YJ, Lim BG. Surgical pleth index monitoring in perioperative pain management: usefulness and limitations. Korean J Anesthesiol 2024; 77:31-45. [PMID: 36926752 PMCID: PMC10834712 DOI: 10.4097/kja.23158] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/16/2023] [Accepted: 03/16/2023] [Indexed: 03/18/2023] Open
Abstract
Surgical pleth index (SPI) monitoring is a representative, objective nociception-monitoring device that measures nociception using photoplethysmographic signals. It is easy to apply to patients and the numerical calculation formula is intuitively easy to understand; therefore, its clinical interpretation is simple. Several studies have demonstrated its efficacy and utility. Compared with hemodynamic parameters, the SPI can detect the degree of nociception during surgery under general anesthesia with greater accuracy, and therefore can provide better guidance for the administration of various opioids, including remifentanil, fentanyl, and sufentanil. Indeed, SPI-guided analgesia is associated with lower intraoperative opioid consumption, faster patient recovery, and comparable or lower levels of postoperative pain and rates of adverse events compared with conventional analgesia. In addition, SPI monitoring allows for the degree of postoperative pain and analgesic requirements to be predicted through the SPI values immediately before patient arousal. However, because patient age, effective circulating volume, position, concomitant medication and anesthetic regimen and level of consciousness may be confounding factors in SPI monitoring, clinicians must be careful when interpreting SPI values. In addition, as SPI values can differ depending on anesthetic and analgesic regimens and the underlying disease, an awareness of the effects of these variables with an understanding of the advantages and disadvantages of SPI monitoring compared to other nociception monitoring devices is essential. Therefore, this review aimed to help clinicians perform optimal SPI-guided analgesia and to assist with the establishment of future research designs through clarifying current usefulness and limitations of SPI monitoring in perioperative pain management.
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Affiliation(s)
- Seok Kyeong Oh
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Young Ju Won
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Byung Gun Lim
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
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Stasiowski MJ, Zmarzły N, Grabarek BO, Gąsiorek J. Postoperative Nausea and Vomiting following Endoscopic Sinus Surgery under the Guidance of Adequacy of Anesthesia or Pupillometry with Intravenous Propofol/Remifentanil. Pharmaceuticals (Basel) 2023; 17:2. [PMID: 38275988 PMCID: PMC10818977 DOI: 10.3390/ph17010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/22/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Postoperative nausea and vomiting (PONV) constitutes an adverse event after endoscopic sinus surgery (ESS) under general anesthesia (GA) with intravenous opioids, such as remifentanil (RMF). Monitoring the nociception/antinociception balance using the surgical pleth index (SPI) or pupillary dilatation reflex (PRD) helps guide intravenous RMF infusion. We aimed to investigate whether their employment could help reduce the incidence of PONV in patients undergoing ESS. The data of 30 patients from the GA group, 31 from the SPI group, and 28 from the PRD group were analyzed. The initial RMF infusion rate of 0.25 µg/kg body weight/minute was increased by 50% when the SPI, PRD, or Boezaart Bleeding Scale (BBS) were elevated by >15, >5%, or >2 points, respectively, until they normalized. PONV was present in 7/89 patients (7.9%): 2/31 patients (6.5%) of the SPI group, 1/30 patients (3.3%) of the GA group, and 4/28 patients (14.3%) of the PRD group. Neither PRD nor SPI guidance for RMF administration reduced the incidence of PONV compared to standard practice. Further studies are required in order to investigate the possibility of PONV eradication in patients undergoing ESS under GA when it is possibly combined with paracetamol/metamizole preventive analgesia, as well as those using antiemetic prophylaxis based on the Apfel Score and premedication with midazolam.
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Affiliation(s)
- Michał J. Stasiowski
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 41-808 Katowice, Poland;
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland
| | - Nikola Zmarzły
- Collegium Medicum, WSB University, 41-300 Dabrowa Gornicza, Poland; (N.Z.); (B.O.G.)
| | | | - Jakub Gąsiorek
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 41-808 Katowice, Poland;
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland
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Ledowski T. [New Approaches in Perioperative Algesimetry]. Anasthesiol Intensivmed Notfallmed Schmerzther 2023; 58:640-653. [PMID: 38056443 DOI: 10.1055/a-2006-9923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The measurement of anaesthetic depth and muscle relaxation have been routine procedures during general anaesthesia for years. Quantification of intraoperative nociception, on the other hand, is still largely impossible. Various methods have been tested and commercialised for more than 10 years. However, a real breakthrough has not yet been achieved and the routine application of all methods available so far is not without problems. This article explains methodological similarities, but also points to specific aspects of various commercial solutions for perioperative algesimetry.
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Yu L, Yang Y, Wu H, Yu Y, Wang Y, Yan S, Li N, Li H, Chen C, Zhang Z. Pupillary monitoring decreases remifentanil consumption during laparoscopic uterine surgery and improves postoperative recovery. Minerva Anestesiol 2023; 89:859-866. [PMID: 37307030 DOI: 10.23736/s0375-9393.23.17303-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND The aim of this paper was to explore pupillary monitoring for determining remifentanil consumption during general anesthesia and evaluating postoperative recovery quality. METHODS Eighty patients undergoing elective laparoscopic uterine surgery were randomly divided into pupillary monitoring group (Group P) and control group (Group C). In Group P, remifentanil dosage during general anesthesia was determined according to pupil dilation reflex; in Group C, it was adjusted according to hemodynamic changes. Intraoperative remifentanil consumption and endotracheal tube extraction time were recorded. The Numerical Rating Scale (NRS) Score, hemodynamic changes, and opioid-related adverse reactions in the post-anesthesia care unit were also recorded. The parameters of pupil light reflex from extubation to 30 min after extubation were analyzed in Group P, and the responsiveness of these parameters and hemodynamic changes to NRS was determined by ROC curve analyses. RESULTS Compared with Group C, in Group P, intraoperative remifentanil consumption, the NRS Score at 20 minutes after extubation, extubation time, and the incidence of nausea, vomiting, and respiratory amnesia were all significantly decreased (all, P<0.05). In Group P, ∆HR and ∆MAP had no value in judging the change of NRS. The ROC values and diagnostic cutoff values of ΔInit, ΔACV, and ΔMCV responding to NRS variation were 0.775 (95% CI: 0.582-0.968), 0.734(95% CI: 0.537-0.930), and 0.822 (95% CI: 0.648-0.997) and 0.21 (sensitivity, 92.3%; specificity, 23.1%), -1.3 (sensitivity, 92.3%; specificity, 18.3%), and -1.0 (sensitivity, 84.6%; specificity, 17.7%), respectively. CONCLUSIONS Intraoperative pupil dilation reflex monitoring can reduce remifentanil consumption and improve postoperative recovery quality. Furthermore, postoperative pupil light reflex monitoring can help evaluate pain degree with high sensitivity.
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Affiliation(s)
- Leyang Yu
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
- Dalian Medical University, Dalian, China
| | - Yang Yang
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Hao Wu
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Yanlong Yu
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Ying Wang
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
- Dalian Medical University, Dalian, China
| | - Shiting Yan
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
- Dalian Medical University, Dalian, China
| | - Ning Li
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Hu Li
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
- Dalian Medical University, Dalian, China
| | - Chao Chen
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - Zhuan Zhang
- Department of Anesthesiology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China -
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Stefanini M, Cagnazzi E, Calza S, Latronico N, Rasulo FA. Feasibility of the pupillary pain index as a guide for depth of analgesia during opioid-sparing anesthesia with continuous infusion of dexmedetomidine. JOURNAL OF ANESTHESIA, ANALGESIA AND CRITICAL CARE 2023; 3:27. [PMID: 37580838 PMCID: PMC10424415 DOI: 10.1186/s44158-023-00112-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/04/2023] [Indexed: 08/16/2023]
Abstract
BACKGROUND The pupillary dilation reflex (PDR) is an objective indicator of analgesic levels in anesthetized patients. Through measurement of the PDR during increasing tetanic stimulation (10-60 mA), it is possible to obtain the pupillary pain index (PPI), a score that assesses the level of analgesia. OBJECTIVES The depth of analgesia during opioid-sparing anesthesia (OSA) with continuous infusion of dexmedetomidine in addition to general anesthesia was assessed. DESIGN Observational prospective feasibility pilot study SETTING: This study was performed in the operating rooms of the Spedali Civili University-affiliated hospital of Brescia, Italy. PATIENTS Forty-five adults who underwent elective open (5-cm incision) surgery under general anesthesia (78% inhalation anesthesia), from Feb. 18th to Aug. 1st, 2019, were enrolled. Exclusion criteria were as follows: implanted pacemaker or ICD, ophthalmological comorbidities, chronic opioid use, peripheral neuropathy, other adjuvant drugs, epidural analgesia, or locoregional block. MAIN OUTCOME MEASURES The first aim was to verify the feasibility of applying a study protocol to evaluate the depth of analgesia during intraoperative dexmedetomidine administration using an instrumental pupillary evaluation. The secondary outcome was to evaluate appropriate analgesia, drug dosage, anesthesia depth, heart rate, blood pressure, transient side effects, postoperative nausea and vomiting (PONV), and pain numerical rating scale (NRS) score. RESULTS Thirty out of 50 patients (60%) treated with dexmedetomidine during the study period were included in the DEX group (8 males, age 42 ± 13 years, BMI 45 ± 8), and 15 other patients were included in the N-DEX group (8 males, age 62 ± 13 years, BMI 26 ± 6). Patients who underwent bariatric, abdominal, or plastic surgery were enrolled. At least 3 pupillary evaluations were taken for each patient. PPI ≤ 3 was observed in 97% of patients in the DEX group and 53% in the N-DEX group. Additionally, the DEX group received less than half the remifentanil dose than the N-DEX group (0.13 ± 0.07 vs 0.3 ± 0.11 mcg kg-1 min-1). The average dose of dexmedetomidine administered was 0.17 ± 0.08 mcg kg-1 h-1. CONCLUSION The feasibility of applying the protocol was verified. An OSA strategy involving dexmedetomidine may be associated with improved analgesic stability: a randomized controlled trial is necessary to verify this hypothesis. TRIAL REGISTRATION Trial.gov registration number: NCT05785273.
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Affiliation(s)
- Martino Stefanini
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, 25123, Brescia, Italy.
| | - Elena Cagnazzi
- Department of Anesthesia, Intensive Care and Emergency, ASST Spedali Civili University Hospital, Piazzale Spedali Civili, 1, 25123, Brescia, Italy
| | - Stefano Calza
- Unit of Biostatistics and Bioinformatics, Department of Molecular and Translational Medicine, University of Brescia, 25123, Brescia, Italy
| | - Nicola Latronico
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, 25123, Brescia, Italy
| | - Francesco A Rasulo
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, 25123, Brescia, Italy
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Yoon HK, Kim YJ, Lee HS, Seo JH, Kim HS. A randomised controlled trial of the analgesia nociception index for intra-operative remifentanil dose and pain after gynaecological laparotomy. Anaesthesia 2023; 78:988-994. [PMID: 36960477 DOI: 10.1111/anae.16008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2023] [Indexed: 03/25/2023]
Abstract
We aimed to investigate the effect of the analgesia nociception index on postoperative pain. We randomly allocated 170 women scheduled for gynaecological laparotomy and analysed results from 159: in 80 women, remifentanil was infused to maintain analgesia nociception indices 50-70; and in 79 women, remifentanil was infused to maintain systolic blood pressure < 120% of baseline values. The primary outcome was the proportion of women with pain scores ≥ 5 (scale 0-10) within 40 min of admission to recovery. The proportion of women with pain scores ≥ 5 was 62/80 (78%) vs. 64/79 (81%), p = 0.73. Mean (SD) doses of fentanyl in recovery were 53.6 (26.9) μg vs. 54.8 (20.8) μg, p = 0.74. Intra-operative remifentanil doses were 0.124 (0.050) μg.kg-1 .min-1 vs. 0.129 (0.044) μg.kg-1 .min-1 , p = 0.55.
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Affiliation(s)
- H-K Yoon
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y J Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H S Lee
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J-H Seo
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H-S Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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Singh A, Akhileshwar, Kumar N, De RR, Bahadur R, Shekhar S. The Role of Pupillometry in the Assessment of Pain in Children Under General Anesthesia: A Prospective Single-Blinded Observational Study. Cureus 2023; 15:e43894. [PMID: 37753025 PMCID: PMC10518524 DOI: 10.7759/cureus.43894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Background and objective The management and treatment of nociception remain one of the major challenges in anesthesiology, and hemodynamic variations may occur due to inadequate analgesia, which at times can be injurious. Pupillometry is a new noninvasive tool to assess nociception during anesthesia. The amount of pupillary reflex dilation (PRD) is directly proportional to the intensity of nociceptive stimuli and inversely proportional to the opioid dosage. This study aimed to assess the use of pupillometry as reflex pupillary dilatation in response to surgical stimulus in children under general anesthesia and to guide intraoperative opioid consumption. Materials and methods After obtaining approval from the institutional ethics committee and written consent from parents, children with an American Society of Anesthesiology (ASA) classification of I and II and aged 2-12 years who were undergoing surgery under general anesthesia were enrolled in this prospective randomized observational study. General anesthesia was standardized with propofol, sevoflurane, and O2 and N2O (50:50%), and fentanyl administration was guided by pupil diameter changes. The primary outcome was to measure pupillary dilatation in response to pain and fentanyl administration guided by it. Results A total of 72 patients were included in the study. The mean pupil diameter significantly increased after surgical stimulus from 1.37 ±0.87 to 2.40 ±1.95 mm (p<0.001). The heart rate (116.2 ±12.25 to 118.50 ±8.20 beats/minute, p=0.18) and systolic BP (114.60 ±17.73 to 118.50 ±12.25 mmHg, p=0.12) did not change significantly on stimulus. The mean fentanyl consumption was 2.4 ug/kg and the side effects were not remarkable. Conclusion Based on our findings, pain has a significant influence on the pupil dilatation reflex in anesthetized children, and opioid administration based on pupil diameter can be valuable in clinical settings. We recommend the use of pupillometry as a pain index in children undergoing surgery under general anesthesia, and it can be a beneficial tool for assessing intraoperative pain. Newer techniques and developments are required in this field.
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Affiliation(s)
- Akrity Singh
- Department of Trauma and Emergency Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Akhileshwar
- Department of Trauma and Emergency Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Nitin Kumar
- Department of Trauma and Emergency Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Ranjeet Rana De
- Department of Trauma and Emergency Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Raj Bahadur
- Department of Trauma and Emergency Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND
| | - Saurav Shekhar
- Department of Trauma and Emergency Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND
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14
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Jiang Y, Ding JM, Hao XX, Fang PP, Liu XS. EEG-derived pain threshold index-guided versus standard care during propofol-remifentanil anesthesia: A randomized controlled trial. Heliyon 2023; 9:e18604. [PMID: 37593599 PMCID: PMC10427989 DOI: 10.1016/j.heliyon.2023.e18604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/11/2023] [Accepted: 07/18/2023] [Indexed: 08/19/2023] Open
Abstract
Purpose The pain threshold index (PTI), a novel index of nociception based on spontaneous EEG wavelet analysis, has been reported to provide reliable accuracy for predicting postoperative pain and hemodynamic reactivity. The present study is aimed to investigate whether PTI-guided analgesia reduces the pain intensity and rate of remedial analgesia in the post-anesthesia care unit (PACU). Methods A total of 122 females undergoing elective gynecologic surgeries had been randomized to receive either PTI-guided analgesia (PTI group) or standard clinical care (control group). Remifentanil administration in the PTI group was guided by PTI to maintain the value between 40 and 65, while that in the control group was guided by hemodynamic changes. The primary outcome was remedial analgesia rate in the PACU. The postoperative pain scores, intraoperative remifentanil requirements, opioid-related adverse events and perioperative serum stress hormone concentrations between the two groups were also compared. Findings It was found that 23 of 58 patients (40%) in the control group and 8 of 58 patients (14%) in the PTI group needed remedial analgesia. The relative risk of receiving remedial analgesia was 2.88 (95% CI, 1.40-5.89, P = 0.002) in the control group. Sufentanil consumption in the PACU (μg) was lower in the PTI group (P = 0.002) than in the control group. Remifentanil and propofol consumption, opioid-related adverse events between these two groups were comparable. Implications PTI-guided analgesia during gynaecologic operations resulted in 25.87% less remedial analgesia. However, studies with different PTI thresholds and larger, more diverse populations should be conducted to further demonstrate the clinical effectiveness of PTI.
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Affiliation(s)
- Yu Jiang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, PR China
| | - Jian-ming Ding
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, PR China
| | - Xi-xi Hao
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, PR China
| | - Pan-pan Fang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, PR China
| | - Xue-Sheng Liu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, PR China
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Ruetzler K, Montalvo M, Bakal O, Essber H, Rössler J, Mascha EJ, Han Y, Ramachandran M, Keebler A, Turan A, Sessler DI. Nociception Level Index-Guided Intraoperative Analgesia for Improved Postoperative Recovery: A Randomized Trial. Anesth Analg 2023; 136:761-771. [PMID: 36727855 DOI: 10.1213/ane.0000000000006351] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Nociception is the physiological response to nociceptive stimuli, normally experienced as pain. During general anesthesia, patients experience and respond to nociceptive stimuli by increasing blood pressure and heart rate if not controlled by preemptive analgesia. The PMD-200 system from Medasense (Ramat Gan, Israel) evaluates the balance between nociceptive stimuli and analgesia during general anesthesia and generates the nociception level (NOL) index from a single finger probe. NOL is a unitless index ranging from 0 to 100, with values exceeding 25 indicating that nociception exceeds analgesia. We aimed to demonstrate that titrating intraoperative opioid administration to keep NOL <25 optimizes intraoperative opioid dosing. Specifically, we tested the hypothesis that pain scores during the initial 60 minutes of recovery are lower in patients managed with NOL-guided fentanyl than in patients given fentanyl per clinical routine. METHODS We conducted a randomized, single-center trial of patients having major abdominal open and laparoscopic surgeries. Patients were randomly assigned 1:1 to intraoperative NOL-guided fentanyl administration or fentanyl given per clinical routine. The primary outcome was pain score (0-10 verbal response scale) at 10-minute intervals during the initial 60 minutes of recovery. Our secondary outcome was a measure of adequate analgesia, defined as a pain score <5, assessed separately at each interval. RESULTS With a planned maximum sample size of 144, the study was stopped for futility after enrolling 72 patients from November 2020 to October 2021. Thirty-five patients were assigned to NOL-guided analgesic dosing and 37 to routine care. Patients in the NOL group spent significantly less time with a NOL index >25 (median reduction [95% confidence interval {CI}] of 14 [4-25] minutes) were given nearly twice as much intraoperative fentanyl (median [quartiles] 500 [330, 780] vs 300 [200, 330] µg), and required about half as much morphine in the recovery period (3.3 [0, 8] vs 7.7 [0, 13] mg). However, in the primary outcome analysis, NOL did not reduce pain scores in the first 60 minutes after awakening, assessed in a linear mixed effects model with mean (standard error [SE]) of 4.12 (0.59) for NOL and 4.04 (0.58) for routine care, and estimated difference in means of 0.08 (-1.43, 1.58), P = .895. CONCLUSIONS More intraoperative fentanyl was given in NOL-guided patients, but NOL guidance did not reduce initial postoperative pain scores.
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Affiliation(s)
- Kurt Ruetzler
- From the Departments of Outcomes Research
- General Anesthesiology
| | | | - Omer Bakal
- From the Departments of Outcomes Research
| | | | | | - Edward J Mascha
- From the Departments of Outcomes Research
- Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - Yanyan Han
- From the Departments of Outcomes Research
- Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | | | | | - Alparslan Turan
- From the Departments of Outcomes Research
- General Anesthesiology
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Goff J, Hina M, Malik N, McLardy H, Reilly F, Robertson M, Ruddy L, Willox F, Forget P. Can Opioid-Free Anaesthesia Be Personalised? A Narrative Review. J Pers Med 2023; 13:jpm13030500. [PMID: 36983682 PMCID: PMC10056629 DOI: 10.3390/jpm13030500] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/04/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Background: A significant amount of evidence suggests that Opioid-Free Anaesthesia (OFA) may provide better outcomes for patients undergoing surgery, sparing patients who are particularly vulnerable to adverse side effects of opioids. However, to what extent personalizing OFA is feasible and beneficial has not been adequately described. Methods: We conducted a narrative literature review aiming to provide a comprehensive understanding of nociception and pain and its context within the field of OFA. Physiological (including monitoring), pharmacological, procedural (type of surgery), genetical and phenotypical (including patients’ conditions) were considered. Results: We did not find any monitoring robustly associated with improved outcomes. However, we found evidence supporting particular OFA indications, such as bariatric and cancer surgery. We found that vulnerable patients may benefit more from OFA, with an interesting field of research in patients suffering from vascular disease. We found a variety of techniques and medications making it impossible to consider OFA as a single technique. Our findings suggest that a vast field of research remains unexplored. In particular, a deeper understanding of nociception with an interest in its genetic and acquired contributors would be an excellent starting point paving the way for personalised OFA. Conclusion: Recent developments in OFA may present a more holistic approach, challenging the use of opioids. Understanding better nociception, given the variety of OFA techniques, may help to maximize their potential in different contexts and potential indications.
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Affiliation(s)
- Jenna Goff
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Morgan Hina
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Nayaab Malik
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Hannah McLardy
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Finley Reilly
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Matthew Robertson
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
- Correspondence:
| | - Louis Ruddy
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Faith Willox
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Patrice Forget
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
- Department of Anaesthesia, NHS Grampian, Aberdeen AB25 2ZD, UK
- Pain AND Opioids after Surgery (PANDOS) European Society of Anaesthesia and Intensive Care (ESAIC) Research Group, 1000 Brussels, Belgium
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Chemam S, Cailliau E, Bert D, Tavernier B, Constant I, Sabourdin N. Nociception level response to calibrated stimulations in children: First assessment of the nociception level index in pediatric anesthesia. Anaesth Crit Care Pain Med 2023; 42:101207. [PMID: 36863410 DOI: 10.1016/j.accpm.2023.101207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 03/04/2023]
Abstract
INTRODUCTION Intraoperative monitoring of nociception has made great progress in adult anesthesia. However, pediatric data are scarce. The Nociception Level (NOL) is one of the most recent indexes of nociception. Its originality is that it provides a multiparametric assessment of nociception. In adults, NOL monitoring allowed lower perioperative opioid requirements, hemodynamic stability, and qualitative postoperative analgesia. So far, the NOL has never been used in children. Our objective was to validate the ability of NOL to provide a quantitative assessment of nociception in anesthetized children. METHODS In 5-12 years old children anesthetized with sevoflurane and alfentanil (10 µg kg-1), before surgical incision, we performed three standardized tetanic stimulations (5 s, 100 Hz) of different intensities (10-30-60 mA) in a randomized order. NOL, heart rate, blood pressure and Analgesia-Nociception Index variations were assessed after each stimulation. RESULTS Thirty children were included. Data were analyzed with a covariance pattern linear mixed regression model. NOL increased after the stimulations (p < 0.05 at each intensity). NOL response was influenced by stimulation intensity (p < 0.001). Heart rate and blood pressure were barely modified by the stimulations. Analgesia-Nociception Index decreased after the stimulations (p < 0.001 at each intensity). Analgesia-Nociception index response was not influenced by stimulation intensity (p = 0.064). NOL and Analgesia-Nociception Index responses were significantly correlated (Pearson r = 0.47; p < 0.001). CONCLUSIONS NOL allows a quantitative assessment of nociception under anesthesia in 5-12 years-old children. This study provides a solid basis for all future investigations on NOL monitoring in pediatric anesthesia. REGISTRATION NCT05233449.
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Affiliation(s)
- Sarah Chemam
- Department of Anesthesiology and Intensive Care, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, 75012 Paris, France; University of Paris EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez l'Enfant et la Femme Enceinte, 75006 Paris, France
| | | | - Dina Bert
- Department of Anesthesiology and Intensive Care, CHU Lille, Pôle d'Anesthésie-Réanimation, 59000 Lille, France
| | - Benoît Tavernier
- Department of Anesthesiology and Intensive Care, CHU Lille, Pôle d'Anesthésie-Réanimation, 59000 Lille, France; University of Lille, ULR 2694 - METRICS: Évaluation des Technologies de santé et des Pratiques médicales, CHU Lille, 59000 Lille, France
| | - Isabelle Constant
- Department of Anesthesiology and Intensive Care, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, 75012 Paris, France; University of Paris EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez l'Enfant et la Femme Enceinte, 75006 Paris, France
| | - Nada Sabourdin
- Department of Anesthesiology and Intensive Care, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, 75012 Paris, France; University of Paris EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez l'Enfant et la Femme Enceinte, 75006 Paris, France.
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Bertolizio G, Garbin M, Ingelmo PM. Evaluation of Nociception during Pediatric Surgery: A Topical Review. J Pers Med 2023; 13:260. [PMID: 36836492 PMCID: PMC9964458 DOI: 10.3390/jpm13020260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 02/03/2023] Open
Abstract
The association between intraoperative nociception and increased patient's morbidity is well established. However, hemodynamic parameters, such as heart rate and blood pressure, may result in an inadequate monitor of nociception during surgery. Over the last two decades, different devices have been marketed to "reliably" detect intraoperative nociception. Since the direct measure of nociception is impractical during surgery, these monitors measures nociception surrogates such as sympathetic and parasympathetic nervous systems responses (heart rate variability, pupillometry, skin conductance), electroencephalographic changes, and muscular reflex arc. Each monitor carries its own advantages and disadvantages. The manuscript aims to give an overview of the most up-to-date information available in the literature on current nociceptor monitors available in clinical practice, with particular focus on their applications in pediatrics.
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Affiliation(s)
- Gianluca Bertolizio
- Department of Pediatric Anesthesiology, Montreal Children’s Hospital, Montreal, QC H4A 3J1, Canada
- Department of Anesthesia, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H4A 3J1, Canada
- Research Institute, McGill University Health Center, Montreal, QC H4A 3J1, Canada
| | - Marta Garbin
- Department of Clinical Sciences, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
| | - Pablo M. Ingelmo
- Department of Pediatric Anesthesiology, Montreal Children’s Hospital, Montreal, QC H4A 3J1, Canada
- Department of Anesthesia, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H4A 3J1, Canada
- Research Institute, McGill University Health Center, Montreal, QC H4A 3J1, Canada
- Edwards Family Interdisciplinary Center for Complex Pain, Montreal Children’s Hospital, Montreal, QC H4A 3J1, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QC H3A 2B4, Canada
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Effect of the using a pupillometer on recovery and early cognitive functions in anesthesia management for endoscopic retrograde cholangiopancreaticography in geriatric patients. JOURNAL OF SURGERY AND MEDICINE 2023. [DOI: 10.28982/josam.7501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background/Aim: Endoscopic retrograde cholangiopancreatography (ERCP) is an invasive procedure used for the diagnosis and treatment of pancreaticobiliary pathologies. Because it is an invasive procedure that is difficult to tolerate by the patient and takes a long time, it is preferable to use it under deep patient sedation and even under general anesthesia in some cases. This study aimed to evaluate the effects of using a pupillometer versus the Ramsey sedation scale (RSS) during anesthesia management for ERCP on recovery and return of cognitive functions in the geriatric patient population.
Methods: A mini-mental test was applied to evaluate the pre-operative cognitive functions of the cases before the intervention. The included patients were divided into groups using the sealed-envelope method. Management of the depth of anesthesia was evaluated by Ramsey sedation scale; in group R and was evaluated by pupillometer in group P. The infusion dose of dexmedetomidine was changed to 0.1 µg/kg/h according to the results of the evaluation.
Results: Sixty cases were included in the study. No difference between the groups in terms of age (P=0.246), gender (P=0.797), American Society of Anesthesiologists (ASA) score (P=0.197), comorbidity (P=0.748), anesthesia duration (P=0.397), midazolam doses (P=0.561), propofol doses (P=0.677), and intra-operative hemodynamic values (P=0.668) were found. Intra-operative dexmedetomidine dose was statistically significantly lower (P=0.004), and recovery was faster in group P (P<0.001). While no differences between the groups in the pre-operative mini-mental test scores (P=0.140) were found, the post-operative scores were statistically significantly lower in group R (P=0.025).
Conclusion: In this study, it was observed that the pupillometer led to a reduction in the use of dexmedetomidine and cognitive functions were better during the post-operative recovery period. As a result, depth of anesthesia can be monitored with a pupillometer. Although the use of pupillometer in endoscopic interventions in the geriatric patient group does not make a hemodynamic difference when compared with the RSS, the pupillometer leads to accelerated recovery from anesthesia, improvement in the return of cognitive functions, and reduction in drug consumption.
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Mills EP, Combs-Ramey K, Kwong GPS, Pang DSJ. Development of reference intervals for pupillometry in healthy dogs. Front Vet Sci 2022; 9:1020710. [PMID: 36387393 PMCID: PMC9643214 DOI: 10.3389/fvets.2022.1020710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/03/2022] [Indexed: 08/13/2023] Open
Abstract
BACKGROUND Pupillometry, the measurement of pupil size and reactivity to a stimulus, has various uses in both human and veterinary medicine. These reflect autonomic tone, with the potential to assess nociception and emotion. Infrared pupillometry reduces inaccuracies that may occur when the pupillary light reflex is determined subjectively by the examiner. To our knowledge, there are no published studies outlining normal reference intervals for automated pupillometry in dogs. OBJECTIVE The objective of this study was to develop de novo automated pupillometry reference intervals from 126 healthy canine eyes. METHODS The pupillary light reflex (PLR) was measured with a handheld pupillometer (NeurOptics™ PLR-200™ Pupillometer). Parameters recorded included maximum pupil diameter (MAX), minimum pupil diameter (MIN), percent constriction (CON), latency (LAT), average constriction velocity (ACV), maximum constriction velocity (MCV), average dilation velocity (ADV) and time to 75% pupil diameter recovery (T75). One measurement was obtained for each eye. RESULTS The following reference intervals were developed: MAX (6.05-11.30 mm), MIN (3.76-9.44 mm), CON (-37.89 to -9.64 %), LAT (0.11-0.30 s), ACV (-6.39 to -2.63 mm/ s), MCV (-8.45 to -3.75 mm/s), ADV (-0.21-1.77 mm/s), and T75 (0.49-3.20 s). CLINICAL SIGNIFICANCE The reference intervals developed in this study are an essential first step to facilitate future research exploring pupillometry as a pain assessment method in dogs.
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Affiliation(s)
- Erinn P. Mills
- Western Veterinary Specialist and Emergency Centre, Calgary, AB, Canada
| | | | - Grace P. S. Kwong
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Daniel S. J. Pang
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
- Faculty of Veterinary Medicine, Université de Montréal, St Hyacinthe, QC, Canada
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Pupillary dilation reflex and behavioural pain scale: Study of diagnostic test. Intensive Crit Care Nurs 2022. [DOI: 10.1016/j.iccn.2022.103332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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22
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Ma D, Ma J, Chen H, Mu D, Kong H, Yu L. Nociception monitors vs. standard practice for titration of opioid administration in general anesthesia: A meta-analysis of randomized controlled trials. Front Med (Lausanne) 2022; 9:963185. [PMID: 36091708 PMCID: PMC9454957 DOI: 10.3389/fmed.2022.963185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/21/2022] [Indexed: 11/18/2022] Open
Abstract
Background Nociception monitors are being increasingly used during surgery, but their effectiveness in guiding intraoperative opioid administration is still uncertain. This meta-analysis of randomized controlled trials (RCTs) aimed to compare the effectiveness of nociception monitors vs. standard practice for opioid administration titration during general anesthesia. Methods We searched the electronic databases of PubMed, EMBASE, Cochrane Library, Clinical Trial, and Web of Science from inception up to August 1, 2021, to identify relevant articles, and extracted the relevant data. Intraoperative opioid administration, extubation time, postoperative pain score, postoperative opioid consumption and postoperative nausea and vomiting (PONV) were compared between patients receiving nociception monitoring guidance and patients receiving standard management. The standardized mean difference (SMD), with 95% confidence interval (CI), was used to assess the significance of differences. The risk ratio (RR), with 95% CI, was used to assess the difference in incidence of PONV. Heterogeneity among the included trials was evaluated by the I2 test. RevMan 5.3 software was used for statistical analysis. Results A total of 21 RCTs (with 1957 patients) were included in the meta-analysis. Intraoperative opioid administration was significantly lower in patients receiving nociception monitor-guided analgesia than in patients receiving standard management (SMD, −0.71; 95% CI, −1.07 to −0.36; P < 0.001). However, pain scores and postoperative opioid consumption were not significantly higher in the former group. Considerable heterogeneity was found among the studies (92%). Extubation time was significantly shorter (SMD, −0.22; 95% CI, −0.41 to −0.03; P = 0.02) and the incidence of PONV significantly lower (RR, 0.78; 95% CI, 0.61 to 1.00; P = 0.05) in patients receiving nociception monitoring guidance. Conclusions Intraoperative nociception monitoring guidance may reduce intraoperative opioid administration and appears to be a viable strategy for intraoperative titration of opioids. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=273619, identifier: CRD42019129776.
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Affiliation(s)
- Dandan Ma
- Department of Pain Management, Jinan Central Hospital, Shandong University, Jinan, China
- Department of Anesthesiology, Yidu Central Hospital Affiliated to Weifang Medical University, Weifang, China
| | - Jiahui Ma
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Huayong Chen
- Department of Anesthesiology, Yidu Central Hospital Affiliated to Weifang Medical University, Weifang, China
| | - Dongliang Mu
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Hao Kong
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Lingzhi Yu
- Department of Pain Management, Jinan Central Hospital, Shandong University, Jinan, China
- *Correspondence: Lingzhi Yu
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Lebrun S, Boccara J, Cailliau E, Herbet M, Tavernier B, Constant I, Sabourdin N. Quantitative assessment of a pediatric nociception monitor in children under sevoflurane anesthesia. Reg Anesth Pain Med 2022; 47:rapm-2022-103547. [PMID: 35654480 DOI: 10.1136/rapm-2022-103547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/26/2022] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Intraoperative monitoring of nociception has recently made substantial progress in adult anesthesia. In contrast, pediatric data are scarce. Newborn-Infant Parasympathetic Evaluation (NIPE index, Mdoloris Medical Systems, Loos, France) is the first nociception index specifically designed for young children. It is a dimensionless index comprised between 0 and 100. Two previous studies suggested that NIPE could indeed 'detect' nociception in anesthetized children. The objective of our study was to investigate if NIPE allowed to detect and to provide a quantitative assessment of nociception in children. METHODS Children were anesthetized with sevoflurane, and received a bolus of alfentanil (10 µg/kg before intubation). Before surgical incision, each participant received three tetanic stimulations (5 s, 100 Hertz) with a 5 min interval, in a randomized order: 10, 30 and 60 milliamps. NIPE and heart rate variations were assessed after each stimulation. RESULTS Thirty children (2.4±1.6 years) were included. Mean delay between alfentanil and the first stimulation was 19±4 min. Mean baseline NIPE was 75±10. NIPE variation after the stimulations was significant at 10, 30 and 60 mA (linear mixed regression model, p<0.001). The intensity of stimulation significantly influenced the amplitude of NIPE variation (linear mixed regression model p<0.001), but had no statistically significant effect on heart rate variation (p=0.52). DISCUSSION NIPE might allow a quantitative assessment of nociception in young children in these anesthetic conditions. This study provides a basis for future research investigating the potential benefits of NIPE-guided intraoperative analgesia in pediatric anesthesia. TRIAL REGISTRATION NUMBER NCT04381637.
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Affiliation(s)
- Sebastien Lebrun
- Anesthesiology, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, Paris, France
- EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez L'enfant et la Femme Enceinte, University of Paris, Paris, France
| | - Johanna Boccara
- Anesthesiology, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, Paris, France
| | | | | | - Benoit Tavernier
- Anesthesiology, CHU Lille, Pôle d'Anesthésie-Réanimation, Lille, France
- ULR 2694 - METRICS: Évaluation des Technologies de santé et des Pratiques médicales, University of Lille, Lille, France
| | - Isabelle Constant
- Anesthesiology, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, Paris, France
- EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez L'enfant et la Femme Enceinte, University of Paris, Paris, France
| | - Nada Sabourdin
- Anesthesiology, CHU Armand Trousseau, GRC 29, Sorbonne University, APHP, Paris, France
- EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez L'enfant et la Femme Enceinte, University of Paris, Paris, France
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Abstract
PURPOSE OF REVIEW Monitoring of intraoperative nociception has made substantial progress in adult anesthesia during the last 10 years. Several monitors have been validated and their use has been associated with intraoperative or postoperative benefits in the adult population. In pediatric anesthesia, less data are available. However, several recent publications have assessed the performance of nociception monitors in children, and investigated their potential benefits in this context. This review will describe the main validated intraoperative nociception monitors, summarize adult findings and describe the available pediatric data. RECENT FINDINGS Six intraoperative nociception indices were included in this review. Among them, four have shown promising results in children: Surgical Pleth Index (GE-Healthcare, Helsinki, Finland), Analgesia-Nociception Index (Mdoloris Medical Systems, Loos, France), Newborn-Infant Parasympathetic Evaluation (Mdoloris Medical Systems), and Pupillometry (IDMED, Marseille, France). The relevance of Skin Conductance (MedStorm innovations, AS, Oslo, Norway) under general anesthesia could not be established. Finally, the Nociception Level (Medasense, Ramat Gan, Israel) still requires to be investigated in children. SUMMARY To date, four monitors may provide a relevant assessment of intraoperative nociception in children. However, the potential clinical benefits associated with their use to guide analgesia remain to be demonstrated.
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Kim SY, Kim JY, Kim J, Yu S, Lee KH, Lee HS, Oh MS, Kim E. Comparison of Antinociceptive Properties Between Sevoflurane and Desflurane Using Pupillary Dilation Reflex Under Equivalent Minimum Alveolar Concentration: A Randomized Controlled Trial. Anesth Analg 2022; 135:798-806. [PMID: 35552287 DOI: 10.1213/ane.0000000000006079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND The pupillary dilation reflex (PDR), the change in pupil size after a nociceptive stimulus, has been used to assess antinociception during anesthesia. The aim of this study was to compare the antinociceptive properties of sevoflurane and desflurane by measuring the PDR amplitude. METHODS Seventy patients between 20 and 55 years of age were randomly allocated to receive either sevoflurane or desflurane. The PDR amplitude after an electrical standardized noxious stimulation (SNT) was measured using an infrared pupillometer under 1.0 minimum alveolar concentration (MAC). The pupil diameter was measured from 5 seconds before to 5 minutes after the SNT. The mean arterial pressure (MAP), heart rate (HR), and bispectral index (BIS) were also measured immediately before and after SNT as well as 1 minute and 5 minutes after SNT. The primary outcome was the maximum percent increase from the prestimulation value of the pupil diameter, and the secondary outcomes were the maximum percent increase from the prestimulation value of the MAP, HR, and BIS after SNT. RESULTS The maximum percent increase of the pupil diameter after SNT was not different between the 2 groups (median [first quartile to third quartile], 45.1 [29.3-80.3] vs 43.4 [27.0-103.1]; median difference, -0.3 [95% confidence interval, -16.0 to 16.5]; P = .986). Before SNT, the MAP was higher under 1.0 MAC of sevoflurane than desflurane; however, the maximum percent increase of MAP, HR, and BIS was not different between the 2 groups. CONCLUSIONS The amount of change in the PDR amplitude, MAP, and HR after SNT was not different between sevoflurane and desflurane anesthesia. This result might suggest that sevoflurane and desflurane may not have different antinociceptive properties at equivalent MAC.
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Affiliation(s)
- Soo Yeon Kim
- From the Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, Seoul, Republic of Korea
| | - Ji-Yoon Kim
- From the Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, Seoul, Republic of Korea
| | - Jonghae Kim
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea; and
| | - Seungcheol Yu
- From the Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, Seoul, Republic of Korea
| | - Kwang Hyun Lee
- From the Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, Seoul, Republic of Korea
| | - Hyeon Seok Lee
- From the Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, Seoul, Republic of Korea
| | - Min Seok Oh
- Department of Anesthesiology and Pain Medicine, Hanyang University College of Medicine, Hanyang University Hospital, Seoul, Republic of Korea
| | - Eugene Kim
- Department of Anesthesiology and Pain Medicine, Hanyang University College of Medicine, Hanyang University Hospital, Seoul, Republic of Korea
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Ji S, Cho S, Jang Y, Kim E, Lee J, Kim J, Kim H. Pupil response to painful stimuli during inhalation anaesthesia without opioids in children. Acta Anaesthesiol Scand 2022; 66:803-810. [PMID: 35403238 DOI: 10.1111/aas.14071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/21/2022] [Accepted: 03/30/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Pupil dilation reflex measured by a pupillometer is known to be a useful parameter for assessing the response to perioperative noxious stimuli. In children, pupillometer can reflect changes after painful stimuli during anaesthesia or guide anaesthesia to reduce opioid consumption. However, to date, there are no data regarding pupil response during inhalation anaesthesia with analgesia by intravenous acetaminophen in children. METHODS We planned a prospective, single-armed study of children aged between 3 and 12 years who underwent surgery under general anaesthesia. Anaesthesia was maintained by 1 minimum alveolar concentration (MAC) of sevoflurane, and 15 mg/kg of acetaminophen was administered. Patients' left eye was examined using a pupillometer after induction, before and after skin incision and train-of-four stimulus. Pupil diameter and other pupillometric parameters were recorded. Increase in heart rate by 15% was regarded as insufficient analgesia to skin incision and indicative powers of pupillometric parameters for insufficient analgesia were examined by receiver-operating characteristics. RESULTS A total of 33 patients were included. Enlarged pupil, large increase in pupil diameter and low neurological pupil index (NPi) after skin incision were good indicators of insufficient analgesia for skin incision. Children with insufficient analgesia showed abnormal NPi value. However, increase in pupil diameter and decrease in NPi were observed even in patients without increase in the heart rate after the skin incision. CONCLUSIONS We suggest dilation of the pupil and decrease in NPi can indicate response to noxious stimuli in children. Regardless of sufficiency of analgesia, pupil dilation and decrease in NPi were observed after skin incision in children under general anaesthesia with 1 MAC of sevoflurane and intravenous acetaminophen.
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Affiliation(s)
- Sang‐Hwan Ji
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Republic of Korea
| | - Sung‐Ae Cho
- Department of Anaesthesiology and Pain Medicine, Konyang University Hospital Konyang University College of Medicine Daejeon Republic of Korea
| | - Young‐Eun Jang
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Republic of Korea
| | - Eun‐Hee Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Republic of Korea
| | - Ji‐Hyun Lee
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Republic of Korea
| | - Jin‐Tae Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Republic of Korea
| | - Hee‐Soo Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital Seoul National University College of Medicine Seoul Republic of Korea
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Vazquez PM, Jensen EW. Different perspectives for monitoring nociception during general anesthesia. Korean J Anesthesiol 2022; 75:112-123. [PMID: 35172074 PMCID: PMC8980281 DOI: 10.4097/kja.22002] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 02/15/2022] [Indexed: 11/30/2022] Open
Abstract
Safe anesthesia is achieved using objective methods that estimate the patient’s state during different phases of surgery. A patient’s state under anesthesia is characterized by three major aspects, which are linked to the main effects produced by each of the families of anesthetic agents administered: hypnosis, analgesia, and muscular relaxation. While quantification techniques designed to assess muscular relaxation under neuromuscular blocking agents have a relatively long history with a high degree of standardization and understanding (e.g., the train-of-four), the knowledge and techniques used to the depth of hypnosis assessment suffer from a lesser degree in both standardization and interpretation due to brain complexity. The problem of standardization and interpretation in the analgesia and nociception assessment increases since it involves more systems, the central nervous system, and the autonomic nervous system. This helps to explain why there are multiple a priori valid approaches to develop nociception monitoring from different interpretations and physiological bases of noxious stimuli processing. Thus, in this review, the current monitoring technologies clinically available for estimating a patient’s nociception under general anesthesia are described.
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Affiliation(s)
- Pablo Martinez Vazquez
- Deutsches Primaten Zentrum (DPZ), 37077 Goettingen, Germany.,R&D of Quantium Medical/Fresenius Kabi. Barcelona, Spain
| | - Erik Weber Jensen
- R&D of Quantium Medical/Fresenius Kabi. Barcelona, Spain.,Automatic Control and Information (ESAII) Department, CREB. UPC-Barcelonatech, Barcelona, Spain
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Sabourdin N, Burey J, Tuffet S, Thomin A, Rousseau A, Al-Hawari M, Taconet C, Louvet N, Constant I. Analgesia Nociception Index-Guided Remifentanil versus Standard Care during Propofol Anesthesia: A Randomized Controlled Trial. J Clin Med 2022; 11:jcm11020333. [PMID: 35054027 PMCID: PMC8778406 DOI: 10.3390/jcm11020333] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/31/2021] [Accepted: 01/06/2022] [Indexed: 12/30/2022] Open
Abstract
The clinical benefits to be expected from intraoperative nociception monitors are currently under investigation. Among these devices, the Analgesia Nociception-Index (ANI) has shown promising results under sevoflurane anesthesia. Our study investigated ANI-guided remifentanil administration under propofol anesthesia. We hypothesized that ANI guidance would result in reduced remifentanil consumption compared with standard management. This prospective, randomized, controlled, single-blinded, bi-centric study included women undergoing elective gynecologic surgery under target-controlled infusion of propofol and remifentanil. Patients were randomly assigned to an ANI or Standard group. In the ANI group, remifentanil target concentration was adjusted by 0.5 ng mL−1 steps every 5 min according to the ANI value. In the Standard group, remifentanil was managed according to standard practice. Our primary objective was to compare remifentanil consumption between the groups. Our secondary objectives were to compare the quality of anesthesia, postoperative analgesia and the incidence of chronic pain. Eighty patients were included. Remifentanil consumption was lower in the ANI group: 4.4 (3.3; 5.7) vs. 5.8 (4.9; 7.1) µg kg−1 h−1 (difference = −1.4 (95% CI, −2.6 to −0.2), p = 0.0026). Propofol consumption was not different between the groups. Postoperative pain scores were low in both groups. There was no difference in morphine consumption 24 h after surgery. The proportion of patients reporting pain 3 months after surgery was 18.8% in the ANI group and 30.8% in the Standard group (difference = −12.0 (95% CI, −32.2 to 9.2)). ANI guidance resulted in lower remifentanil consumption compared with standard practice under propofol anesthesia. There was no difference in short- or long-term postoperative analgesia.
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Affiliation(s)
- Nada Sabourdin
- Département d’Anesthésie-Réanimation, Hopital Trousseau, GRC 29, DMU DREAM, Sorbonne Université, AP-HP, 75012 Paris, France; (M.A.-H.); (N.L.); (I.C.)
- EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez L’enfant et la Femme Enceinte, Université de Paris, 75006 Paris, France
- Correspondence:
| | - Julien Burey
- Département d’Anesthésie-Réanimation, Hopital Tenon, GRC 29, DMU DREAM, Sorbonne Université, AP-HP, 75020 Paris, France; (J.B.); (C.T.)
| | - Sophie Tuffet
- Department of Clinical Pharmacology and Clinical Research Platform of the East of Paris (URC-CRC-CRB), Hôpital St Antoine, AP-HP, 75012 Paris, France; (S.T.); (A.R.)
| | - Anne Thomin
- Département de Gynécologie et Obstétrique, Hopital Trousseau, FHU PREMA, Sorbonne Université, AP-HP, 75012 Paris, France;
| | - Alexandra Rousseau
- Department of Clinical Pharmacology and Clinical Research Platform of the East of Paris (URC-CRC-CRB), Hôpital St Antoine, AP-HP, 75012 Paris, France; (S.T.); (A.R.)
| | - Mossab Al-Hawari
- Département d’Anesthésie-Réanimation, Hopital Trousseau, GRC 29, DMU DREAM, Sorbonne Université, AP-HP, 75012 Paris, France; (M.A.-H.); (N.L.); (I.C.)
| | - Clementine Taconet
- Département d’Anesthésie-Réanimation, Hopital Tenon, GRC 29, DMU DREAM, Sorbonne Université, AP-HP, 75020 Paris, France; (J.B.); (C.T.)
| | - Nicolas Louvet
- Département d’Anesthésie-Réanimation, Hopital Trousseau, GRC 29, DMU DREAM, Sorbonne Université, AP-HP, 75012 Paris, France; (M.A.-H.); (N.L.); (I.C.)
| | - Isabelle Constant
- Département d’Anesthésie-Réanimation, Hopital Trousseau, GRC 29, DMU DREAM, Sorbonne Université, AP-HP, 75012 Paris, France; (M.A.-H.); (N.L.); (I.C.)
- EA 7323: Pharmacologie et Evaluation des Thérapeutiques chez L’enfant et la Femme Enceinte, Université de Paris, 75006 Paris, France
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Lv J, Zhang J, Zhang K, Zheng J. Predictive value of EEG-derived pain threshold index for acute postoperative pain in children. Front Pediatr 2022; 10:1052532. [PMID: 36619500 PMCID: PMC9811812 DOI: 10.3389/fped.2022.1052532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Electroencephalogram (EEG)-derived pain threshold index (PTI) has been developed as a novel pain recognition indicator and has been proved to be useful in the prediction of acute postoperative pain in adults. Evidence of its usability in children is limited. The aim of this study was to investigate the prediction value of this novel pain indicator PTI for acute postoperative pain in children. METHODS A total of 80 patients undergoing laparoscopic surgery under general anesthesia were enrolled. Blood pressure, heart rate (HR), surgical pleth index (SPI), PTI, and EEG-derived sedative index-wavelet index (WLI) data were recorded at the end of the surgery. The postoperative pain scores Face, Legs, Activity, Cry, Consolability (FLACC) were obtained in the emergence room 5 min after the children wake up. Receiver-operating characteristic curve was performed to analyze the predictive value of PTI, SPI, HR, and mean arterial pressure (MAP). The consistency between SPI and PTI was also evaluated. RESULTS Results showed that the areas under curves (95%CI) of PTI and SPI were 0.796 (95% CI: 0.694-0.895) and 0.753 (95% CI: 0.632-0.874), respectively, with the best cut-off value of 58 and 45 to discriminate between mild and moderate to severe pain. CONCLUSION This study suggested that PTI obtained at the end of the surgery could predict acute postoperative pain in children with an acceptable accuracy. It will help with early recognition and treatment of postoperative pain, thus reducing the pain in children. In addition, PTI had a good consistency with SPI in predicting acute postoperative pain in children.
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Affiliation(s)
- Jingjing Lv
- Department of Anesthesiology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jianwei Zhang
- Department of Anesthesiology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kan Zhang
- Department of Anesthesiology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jijian Zheng
- Department of Anesthesiology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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30
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Coeckelenbergh S, Richebé P, Longrois D, Joosten A, De Hert S. Current trends in anesthetic depth and antinociception monitoring: an international survey. J Clin Monit Comput 2021; 36:1407-1422. [PMID: 34826017 DOI: 10.1007/s10877-021-00781-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 11/21/2021] [Indexed: 12/19/2022]
Abstract
Current trends in anesthetic depth (i.e., hypnosis) and antinociception monitoring are unclear. We thus aimed to determine contemporary perspectives on monitoring these components of anesthesia during general anesthesia. Participants received and responded anonymously to an internet-based international survey supported by the European Society of Anaesthesiology and Intensive Care. Comparisons, when applicable, were carried out using Chi2 analysis or Fischer's exact test. A total of 564 respondents, predominantly from Europe (80.1%), participated. There was a strong participation from Belgium (11.5%). A majority (70.9%) of anesthetists considered hypnotic monitoring important on most occasions to always. In contrast, a majority (62.6%) never or only occasionally considered antinociception monitoring important. This difference in the perceived importance of anesthetic depth versus antinociception monitoring was significant (p < 0.0001). A majority of respondents (70.1%) believed that guiding hypnosis and antinociception using these monitors would improve patient care on most occasions to always. Nonetheless, a substantial number of participants were unsure if hypnotic (23%) or antinociception (32%) monitoring were recommended and there was a lack of knowledge (58%) of any published algorithms to titrate hypnotic and/or antinociceptive drugs based on the information provided by the monitors. In conclusion, current trends in European academic centers prioritize anesthesia depth over antinociception monitoring. Despite an agreement among respondents that applying strategies that optimize anesthetic depth and antinociception could improve outcome, there remains a lack of knowledge of appropriate algorithms. Future studies and recommendations should focus on clarifying goal-directed anesthetic strategies and determine their impact on perioperative patient outcome.
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Affiliation(s)
- Sean Coeckelenbergh
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium.
- Department of Anesthesiology and Perioperative Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium.
| | - Philippe Richebé
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, CIUSSS de L'Est de L'Ile de Montréal (CEMTL), University of Montreal, Montreal, Canada
| | - Dan Longrois
- Department of Anesthesiology and Intensive Care, Hôpital Bichat-Claude-Bernard, AP-HP. Nord-Université de Paris, Paris, France
| | - Alexandre Joosten
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
- Department of Anesthesiology, Hôpital-Paul Brousse, Université Paris-Saclay, Villejuif, France
| | - Stefan De Hert
- Department of Anesthesiology and Perioperative Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
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31
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Fang PP, Wu JQ, Tang LL, Gao S, Liu XS. The association between perioperative pupillary parameters and postoperative acute pain: A pilot cross-sectional study. Pain Pract 2021; 22:322-328. [PMID: 34662477 DOI: 10.1111/papr.13084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/25/2021] [Accepted: 10/12/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVE We aim to explore the capacity of perioperative pupillary variables to predict acute pain in the post-anesthesia care unit (PACU). METHODS Patients scheduled to undergo thoracic or abdominal surgery under general anesthesia between April 2021 and June 2021 were enrolled. We measured the pupil diameter, pupillary light reflex (PLR), and pupillary reflex dilatation 5 min before anesthesia induction (T1), 5 min after intubation (T2), at the end of anesthesia (T3), immediately before extubation (T4), and 5 min after extubation (T5). We assessed the early postoperative pain intensity in the PACU using Numeric Rating Scales (NRS) at recovery, 5 min after recovery, and 10 min after recovery. Logistic regression models were used to evaluate the association between perioperative pupillary variables and postoperative pain intensity. RESULTS Fifty-one patients were enrolled, 50 of whom were included in the final analysis. A total of 13 patients (26%) needed remedial analgesia in the PACU. Pupil parameters at T1, T2, T3, and T5 were not associated with NRS in the PACU. Multiple logistic regression models and receiver operating characteristic (ROC) curves indicated that only latency of PLR at T4 can predict postoperative acute pain. The ROC analysis showed that the cutoff value for latency of PLR at T4 was 0.29 s to discriminate between no pain and pain, and the area under the curve was 0.778 (95% CI 0.634-0.922, p = 0.002) with sensitivity 50.0% and specificity 91.7%. CONCLUSION The latency of PLR immediately before extubation may be a useful predictor for postoperative acute pain in the PACU.
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Affiliation(s)
- Pan-Pan Fang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jun-Qi Wu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Li-Li Tang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shan Gao
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei, China
| | - Xue-Sheng Liu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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Stasiowski MJ, Szumera I, Wardas P, Król S, Żak J, Missir A, Pluta A, Niewiadomska E, Krawczyk L, Jałowiecki P, Grabarek BO. Adequacy of Anesthesia and Pupillometry for Endoscopic Sinus Surgery. J Clin Med 2021; 10:jcm10204683. [PMID: 34682812 PMCID: PMC8537175 DOI: 10.3390/jcm10204683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 01/14/2023] Open
Abstract
Inadequate intraoperative analgesia causes the deterioration of the condition of the surgical field (CSF) as a result of hemodynamic instability. Analgesia monitors are used to guide remifentanil) infusion to optimize intraoperative analgesia. The main aim of the current randomized controlled trial was to investigate the potential advantages of intraoperative analgesia monitoring using surgical Pleth index (SPI)- or pupillometry (PRD)-guided remifentanil administration for managing the volume of total intraoperative blood loss (TEIBL), CSF, and length of operation (LOP) in comparison with the standard practice in patients undergoing endoscopic sinus surgery (ESS). The 89 patients in our study were grouped as follows: 30 patients were assigned to the general analgesia (GA) group, 31 patients were assigned to the SPI group, and 28 patients were assigned to the PRD group. The speed of remifentanil infusion was accelerated by 50% when SPI, PRD, or BSS were increased by >15 points, >5%, or >2, respectively, in adjacent groups until their normalization. The SPI group showed significantly lower TEIBL in comparison to the GA group (165.2 ± 100.2 vs. 283.3 ± 193.5 mL; p < 0.05) and a higher mean arterial pressure (MAP; 73.9 ± 8 vs. 69.2 ± 6.8 mmHg; p < 0.05). In the PRD group, a shorter LOP compared with the GA group was observed (63.1 ± 26.7 min vs. 82.6 ± 33.1 min; p < 0.05). It was noted that the PRD group had a lower total remifentanil consumption than the SPI group (1.3 ± 1.4 vs. 1.8 ± 0.9 mg; p < 0.05). In ASA I-III patients undergoing ESS, intraoperative monitoring based on state entropy and SPI values can optimize the CSF and reduce TEIBL, whereas monitoring based on state entropy and PRD measurements can optimize the cost effectiveness of anesthetic drugs and the use of the operation room.
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Affiliation(s)
- Michał Jan Stasiowski
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland;
- Correspondence:
| | - Izabela Szumera
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland;
| | - Piotr Wardas
- Chair and Clinical Department of Laryngology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-055 Katowice, Poland;
| | - Seweryn Król
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of General, Colorectal and Polytrauma Surgery, Faculty of Health Sciences in Katowice, Medical University of Silesia, 40-555 Katowice, Poland
| | - Jakub Żak
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland;
| | - Anna Missir
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of Neurosurgery, Regional Hospital in Sosnowiec, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
| | - Aleksandra Pluta
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland;
| | - Ewa Niewiadomska
- Department of Epidemiology and Biostatistics, Faculty of Public Health in Bytom, Medical University of Silesia, 40-555 Katowice, Poland;
| | - Lech Krawczyk
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland;
| | - Przemysław Jałowiecki
- Chair and Department of Emergency Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland; (I.S.); (S.K.); (A.M.); (A.P.); (L.K.); (P.J.)
- Department of Anaesthesiology and Intensive Care, 5th Regional Hospital, 41-200 Sosnowiec, Poland;
| | - Beniamin Oskar Grabarek
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology in Katowice, 41-800 Zabrze, Poland;
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Espitalier F, Idrissi M, Fortier A, Bélanger MÈ, Carrara L, Dakhlallah S, Rivard C, Brulotte V, Zaphiratos V, Loubert C, Godin N, Fortier LP, Verdonck O, Richebé P. "Impact of Nociception Level (NOL) index intraoperative guidance of fentanyl administration on opioid consumption, postoperative pain scores and recovery in patients undergoing gynecological laparoscopic surgery. A randomized controlled trial". J Clin Anesth 2021; 75:110497. [PMID: 34597955 DOI: 10.1016/j.jclinane.2021.110497] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 08/22/2021] [Accepted: 08/29/2021] [Indexed: 10/20/2022]
Abstract
STUDY OBJECTIVE The Nociception Level (NOL) index uses a multiparametric approach to measure the balance between sympathetic and parasympathetic systems activity. Recently, a strong correlation between the NOL index response to nociceptive stimuli and the level of opioid analgesia during surgery was reported. Others observed that intraoperative doses of remifentanil and sufentanil were reduced when the NOL index was used. So far, no study has evaluated the impact of NOL-guided fentanyl antinociception in laparoscopic gynecological surgery. The primary hypothesis of this present study was to evaluate whether intraoperative NOL-guided fentanyl administration would reduce intra-operative opioid consumption. Secondary hypotheses were to assess whether this would lead to lower postoperative opioid consumption and pain scores, as well as improved postoperative outcomes. SETTING University hospital, operating room. PATIENTS 70 adult patients, ASA 1-3, scheduled for total laparoscopic hysterectomy. INTERVENTIONS Patients were randomized into 2 groups: SOC (standardization of care) and NOL (using the NOL index to guide the administration of fentanyl). The depth of anesthesia was monitored with BIS™. Intraoperative fentanyl boluses were administered based on heart rate and mean arterial pressure variations in the SOC group, and NOL index for the NOL group. MEASUREMENTS Fentanyl total intraoperative dose administered was collected and also averaged per hour. Pain scores and hydromorphone consumption were assessed in the post-anesthesia care unit and up to 24 h. MAIN RESULTS Sixty-six patients completed the study, 33 in each group. Total intraoperative fentanyl administration was not different between the two groups (217 (70) in the NOL group vs 280 (210) in the SOC group (P = 0.11)). Nevertheless, intraoperative fentanyl administration per hour was reduced by 25% in the NOL-guided group compared to the SOC group: 81 (24) vs 108 (66) μg.h-1, respectively (P = 0.03). Hydromorphone consumption and pain scores in the post-anesthesia care unit and at 24 h were not significantly different between the two groups. CONCLUSION NOL-guided analgesia allowed for a 22% reduction of the total amount of intraoperative fentanyl which was not significant. Nevertheless, results reported a significant reduction by 25% in the doses of fentanyl averaged per hour of surgery and administered in the NOL-guided group compared with the standardized practice in laparoscopic gynecological surgery. The pain measured postoperatively was similar in the two groups while the average postoperative consumption of opioids to achieve the same level of pain scores in post-anesthesia care unit and at 24 h was not significantly reduced. Further larger multicenter studies centered towards postoperative outcomes are needed.
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Affiliation(s)
- Fabien Espitalier
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada; Department of Anesthesiology, Intensive Care of University Hospitals of Tours, France
| | - Moulay Idrissi
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Annik Fortier
- Department of Biostatistics, Montréal Health Innovations Coordinating Center (MHICC), Montréal, Canada
| | - Marie-Ève Bélanger
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Lucie Carrara
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Sarah Dakhlallah
- Department of Gynecology-Oncology surgery and Obstetric, Maisonneuve-Rosemont Hospital, CEMTL, Montréal, Canada
| | - Chantal Rivard
- Department of Gynecology-Oncology surgery and Obstetric, Maisonneuve-Rosemont Hospital, CEMTL, Montréal, Canada
| | - Véronique Brulotte
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Valérie Zaphiratos
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Christian Loubert
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Nadia Godin
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Louis-Philippe Fortier
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Olivier Verdonck
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Philippe Richebé
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada.
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Sabourdin N, Del Bove L, Louvet N, Luzon-Chetrit S, Tavernier B, Constant I. Relationship between pre-incision Pupillary Pain Index and post-incision heart rate and pupillary diameter variation in children. Paediatr Anaesth 2021; 31:1121-1128. [PMID: 34233066 DOI: 10.1111/pan.14253] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/24/2021] [Accepted: 06/29/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND The Pupillary Pain Index is a recent pupillometric index designed to assess the level of analgesia under general anesthesia in children and adults. If analgesia is inadequate, acute nociceptive stimuli such as skin incision may induce significant hemodynamic disturbances. AIMS Our aim was to investigate the potential relationship between pre-incision Pupillary Pain Index and heart rate increase following skin incision in children. METHODS This was a prospective, non-randomized, registered pilot study. We included children undergoing surgery under general anesthesia. Pupillary Pain Index was assessed 2 min before skin incision. Then, heart rate maximal variation (ΔHR ) and pupillary diameter maximal variation (ΔPD ) in the minute following incision were recorded. Spearman coefficient was calculated to characterize the relationship between Pupillary Pain Index and ΔHR or ΔPD . Using receiver operating characteristic curve analysis, we also studied the predictive value of pre-incision Pupillary Pain Index for heart rate and pupillary diameter reactivity. RESULTS 53 patients were included (10 ± 4 years, 40 ± 19 kg). There was a modest correlation between pre-incision Pupillary Pain Index and ΔHR (Spearman rs = 0.35 [0.05-0.57], p = .011), and between pre-incision Pupillary Pain Index and ΔPD (Spearman rs = 0.54 [0.33-0.71], p < .001). Regarding the predictive value of Pupillary Pain Index for heart rate or pupillary diameter reactivity, the corresponding areas under the receiver operating characteristic curves were 0.90 [0.82-0.99] and 0.78 [0.65-0.93], respectively. A threshold of Pupillary Pain Index <3 predicted the absence of heart rate reactivity at incision with a good performance (negative predictive value = 1). CONCLUSIONS In children, pre-incision Pupillary Pain Index was moderately correlated with post-incision nociception. Pre-incision Pupillary Pain Index had good predictive performances for heart rate or pupillary diameter reactivity to skin incision. Pre-incision Pupillary Pain Index <3 might predict the absence of heart rate reaction to incision.
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Affiliation(s)
- Nada Sabourdin
- CHU Armand Trousseau, Département d'Anesthésie-Réanimation, DMU DREAM, GRC 29, APHP, Sorbonne Université, Paris, France.,Pharmacologie et Evaluation des thérapeutiques chez l'enfant et la femme enceinte, Université de Paris, Paris, France
| | - Loïc Del Bove
- CHU Armand Trousseau, Département d'Anesthésie-Réanimation, DMU DREAM, GRC 29, APHP, Sorbonne Université, Paris, France
| | - Nicolas Louvet
- CHU Armand Trousseau, Département d'Anesthésie-Réanimation, DMU DREAM, GRC 29, APHP, Sorbonne Université, Paris, France
| | - Sarah Luzon-Chetrit
- CHU Armand Trousseau, Département d'Anesthésie-Réanimation, DMU DREAM, GRC 29, APHP, Sorbonne Université, Paris, France
| | - Benoît Tavernier
- CHU Lille, Pôle d'Anesthésie-Réanimation, Lille, France.,METRICS: Évaluation des Technologies de santé et des Pratiques médicales, CHU Lille, Univ. Lille, Lille, France
| | - Isabelle Constant
- CHU Armand Trousseau, Département d'Anesthésie-Réanimation, DMU DREAM, GRC 29, APHP, Sorbonne Université, Paris, France.,Pharmacologie et Evaluation des thérapeutiques chez l'enfant et la femme enceinte, Université de Paris, Paris, France
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Abstract
The intraoperative dosing of opioids is a challenge in routine anesthesia as the potential effects of intraoperative overdosing and underdosing are not completely understood. In recent years an increasing number of monitors were approved, which were developed for the detection of intraoperative nociception and therefore should enable a better control of opioid titration. The nociception monitoring devices use either continuous hemodynamic, galvanic or thermal biosignals reflecting the balance between parasympathetic and sympathetic activity, measure the pupil dilatation reflex or the nociceptive flexor reflex as a reflexive response to application of standardized nociceptive stimulation. This review article presents the currently available nociception monitors. Most of these monitoring devices detect nociceptive stimulations with higher sensitivity and specificity than changes in heart rate, blood pressure or sedation depth monitoring devices. There are only few studies on the effect of opioid titration guided by nociception monitoring and the possible postoperative benefits of these devices. All nociception monitoring techniques are subject to specific limitations either due to perioperative confounders (e.g. hypovolemia) or special accompanying medical conditions (e.g. muscle relaxation). There is an ongoing discussion about the clinical relevance of nociceptive stimulation in general anesthesia and the effect on patient outcome. Initial results for individual monitor systems show a reduction in opioid consumption and in postoperative pain level. Nevertheless, current evidence does not enable the routine use of nociception monitoring devices to be recommended as a clear beneficial effect on long-term outcome has not yet been proven.
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Abstract
Nociception refers to the process of encoding and processing noxious stimuli. Its monitoring can have potential benefits. Under anesthesia, nociceptive signals are continuously generated to cause involuntary effects on the autonomic nervous system, reflex movement, and stress response. Most available systems depend on the identification and measurement of these indirect effects to indicate nociception-antinociception balance. Despite advances in monitoring technology and availability, their limitations presently override their benefits. Hence, their utility and applicability in present-day anesthesia care is uncertain. Future technologies might allow automated closed-loop multimodal anesthesia systems, which includes the components of hypnosis and analgesic balance for a patient.
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Affiliation(s)
- Harsha Shanthanna
- Department of Anesthesia, and Department of Health Research Methods, Evidence and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
| | - Vishal Uppal
- Department of Anesthesia, Dalhousie University, Nova Scotia Health Authority and IWK Health Centre, 5th Floor, Halifax Infirmary Site, Room 5452, 1796 Summer Street, Halifax B3H 3A7, Canada
| | - Girish P Joshi
- The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9068, USA
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Zhang S, Liu Y, Liu X, Liu T, Li P, Mei W. Infrared thermography for assessment of thoracic paravertebral block: a prospective observational study. BMC Anesthesiol 2021; 21:168. [PMID: 34116642 PMCID: PMC8194215 DOI: 10.1186/s12871-021-01389-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/02/2021] [Indexed: 02/07/2023] Open
Abstract
Background There was no “gold standard” to assess the success or failure of thoracic paravertebral block (TPVB). Measurement of skin temperature with infrared thermography (IT) would be a reliable method to evaluate the effectiveness of regional blocks. This study aimed to explore the feasibility of using skin temperature difference (Td) determined by IT between the blocked and unblocked side to predict the spread of TPVB. Methods Sixty-one patients undergoing elective unilateral breast or thoracoscopic surgery were enrolled in this prospective observational study. TPVB was performed at T4 and T5 under real-time ultrasound guidance with 10 mL of 0.4% ropivacaine for each patient, respectively. Td between the blocked and unblocked side were measured with IT from T2 to T10 at the anterior chest wall before TPVB and 5 min, 10 min, 15 min and 20 min after TPVB. Pinprick test was performed at 20 min after TPVB. Successful TPVB was defined as no sensation to pinprick in 3 or more adjacent dermatomes corresponding to the site of injection at 20 min after TPVB. Td was compared to pinprick test for evaluating its effectiveness in predicting the success of TPVB. The sensitivity, specificity, and cut-off value of Td for predicting successful TPVB were determined by receiver operator characteristic (ROC) curve analysis. Results Compared with the baseline value before block, Td from T2 to T10 were significantly increased at each time point in successful blocks. In failed blocks, Td was not increased in any dermatome. The increase of Td at T4-T7 was more than 1 °C 20 min after successful TPVB. Fifteen minutes after block, Td increase at T4 had the greatest potential to predict block success. The area under the ROC curve was 0.960 at a cut-off value of 0.63 °C with a sensitivity of 83.3% and a specificity of 100.0%. Conclusions This study suggested that the increase of Td at T4 dermatome determined by IT between the blocked and unblocked side is an early, quantitative, and reliable predictor of successful TPVB. Trial registration Clinical trial registration: NCT04078347. Supplementary Information The online version contains supplementary material available at 10.1186/s12871-021-01389-4.
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Affiliation(s)
- Shuang Zhang
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Liu
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohu Liu
- Britton Chance Center for Biomedical Photonics, School of Engineering Sciences, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
| | - Tianzhu Liu
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pengcheng Li
- Britton Chance Center for Biomedical Photonics, School of Engineering Sciences, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Mei
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Effects of pupillary reflex dilation-guided opioid administration on remifentanil and morphine consumption during laparoscopic surgery: A randomised controlled trial. Eur J Anaesthesiol 2021; 38:975-984. [PMID: 33913678 DOI: 10.1097/eja.0000000000001491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Analysis of pupillary reflex dilation (PRD) assesses the balance of nociception--antinociception. Laparoscopic surgery induces haemodynamic variations that are misleading. During laparoscopy, PRD guidance helps differentiate haemodynamic changes because of excess nociception from secondary changes related to the reflex release of endocrine factors. OBJECTIVE The present study evaluated the effect of PRD-guided antinociception on the administration of intra-operative remifentanil and immediate postoperative morphine consumption in patients undergoing elective laparoscopic surgery. DESIGN The study was a single-blind, randomised controlled trial. SETTING The study took place at two sites at the University Hospital of Nancy from March 2014 to November 2017. PATIENTS A total of 100 patients who underwent scheduled laparoscopic surgery were included. INTERVENTIONS Patients were randomly given remifentanil guided by PRD (PRD-guided) or standard anaesthesia care (control). MAIN OUTCOME MEASURES The primary outcome was intra-operative remifentanil consumption. Secondary outcomes included morphine consumption in the immediate postoperative period and the number of intra-operative haemodynamic events. RESULTS Data from 95 patients were analysed. Intraoperative remifentanil consumption was lower in the PRD-guided group than in the control group: median [IQR], 0.09 [0.07 to 0.11] vs. 0.14 [0.12 to 0.16] μg kg min, with a mean difference (95% confidence Interval, CI) of 0.048 (0.035 to 0.060) μg kg min; P < 0.0001. Morphine consumption was 0.13 [0.1 to 0.5] vs. 0.15 [0.11 to 0.4] mg kg (P = 0.52) in the PRD-guided and control groups, respectively. The number of hypertensive and tachycardia events was greater in the PRD-guided group than in the control group: Hypertensive events 60.4 vs. 32.6%, relative risk 1.85 (95% CI, 1.24 to 2.84), P = 0.004; tachycardia events 31.6% vs. 4.3%, relative risk 2.09 (95% CI, 1.45 to 2.84), P < 0.001. CONCLUSIONS When PRD is used to differentiate between haemodynamic events arising from noxious stimuli and those events because of other nonsurgical stimuli, then intra-operative remifentanil administration is reduced intra-operatively during laparoscopic surgery but there was no change in postoperative morphine consumption. TRIAL REGISTRATION Clinicaltrials.gov NCT02116868.
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Ende J, Fassl J. Reducing Opioid Dose Via Targeted Nociception Monitoring. DEUTSCHES ARZTEBLATT INTERNATIONAL 2021; 117:831-832. [PMID: 33593475 DOI: 10.3238/arztebl.2020.0831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Juliane Ende
- Institute of Cardiac Anesthesiology, Heart Center of the University Hospital Carl Gustav Carus, Technical University, Dresden, Germany; Department of Anaesthesiology and Critical Care Medicine, University Hospital Carl Gustav Carus, Technical University, Dresden, German
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Rossi M, Sbaraglia F. Place your bets: pediatric pain is no longer a game for gamblers. Minerva Anestesiol 2021; 87:272-274. [PMID: 33591149 DOI: 10.23736/s0375-9393.21.15443-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marco Rossi
- Department of Anesthesia and Intensive Care, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy -
| | - Fabio Sbaraglia
- Department of Anesthesia and Intensive Care, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
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Packiasabapathy S, Rangasamy V, Sadhasivam S. Pupillometry in perioperative medicine: a narrative review. Can J Anaesth 2021; 68:566-578. [PMID: 33432497 DOI: 10.1007/s12630-020-01905-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 11/07/2020] [Accepted: 11/09/2020] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Pupillometry is a technique for objective quantification of nociception that takes into account the central processing of noxious stimuli and its sympathetic response. This narrative review provides an overview of the physiology of the pupil, the principles of pupillometry, and its potential application in the perioperative environment, especially in nociception monitoring and quantifying responses to opioids. SOURCE Relevant articles, including reports of original investigation, review articles, and meta-analyses were identified from searches of PubMed and Google Scholar databases. Articles that described pupillary physiology and pupillometry, along with original research reports of the application of pupillometry in perioperative and critical care environment were used to synthesize a narrative review. PRINCIPAL FINDINGS Pupillometry is emerging as an objective measure of nociception, especially in patients under general anesthesia, children, non-verbal patients, and critically ill patients who cannot effectively communicate ongoing pain. Portable automated pupillometers have made accurate quantification of pupillary reflexes, including light reflex and dilatation reflex, possible. This technique has been successfully studied in the perioperative setting for a number of applications, including quantification of nociception, response to analgesia, and assessing efficacy of regional blocks. Pupillary oscillations have shown promise in assessing central opioid effects. Pupillometers can also accurately quantify light reflexes during the neurologic evaluation of critically ill patients. CONCLUSIONS Pupillometry is an easy to use non-invasive bedside technique to quantify nociception and monitor opioid effects. It has the potential to personalize pain management in perioperative and intensive care unit environments. Additional studies are needed to further understand the utility of pupillometry in this context.
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Affiliation(s)
- Senthil Packiasabapathy
- Department of Anesthesia, Riley Hospital for Children at Indiana University Health, Indiana University School of Medicine, RH 2835, 705 Riley Hospital Drive, Indianapolis, IN, 46202, USA
| | - Valluvan Rangasamy
- Department of Anesthesia, Riley Hospital for Children at Indiana University Health, Indiana University School of Medicine, RH 2835, 705 Riley Hospital Drive, Indianapolis, IN, 46202, USA
| | - Senthilkumar Sadhasivam
- Department of Anesthesia, Riley Hospital for Children at Indiana University Health, Indiana University School of Medicine, RH 2835, 705 Riley Hospital Drive, Indianapolis, IN, 46202, USA.
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Impact of chronic treatment by β1-adrenergic antagonists on Nociceptive-Level (NOL) index variation after a standardized noxious stimulus under general anesthesia: a cohort study. J Clin Monit Comput 2021; 36:109-120. [PMID: 33398545 DOI: 10.1007/s10877-020-00626-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
During the perioperative period, nociception control is certainly one of the anesthesiologist's main objectives when assuming care of a patient. There exists some literature demonstrating that the nociceptive stimuli experienced during surgery are responsible for peripheral and central sensitization phenomena, which can in turn lead to persistent postsurgical pain. An individualized approach to the evaluation and treatment of perioperative nociception is beneficial in order to avoid the sensitization phenomena that leads to prolonged postoperative pain and to minimize the consumption of opiates and their adverse effects. In terms of sensitivity, specificity, and positive/negative predictive values when compared to heart rate (HR) and mean arterial pressure (MAP), recent literature has shown that the NOL variation (ΔNOL) is the best index to distinguish noxious from non-noxious stimuli. Chronic treatment with β1-adrenergic antagonists may constitute a limitation to the use of the NOL index. β1-adrenergic antagonists induce a depressive action on the heart rate, which results in a limitation of its variability after a noxious stimulus. Since heart rate and heart rate variability are two parameters integrated into the NOL index, the validity of the NOL index in a population of patients receiving β1-adrenergic antagonists has not yet been determined. Our study sought to explore the NOL index, the BIS, and the heart rate variation in a group of patients under chronic treatment with β1-adrenergic antagonists submitted to standardized noxious stimulus under general anesthesia. We then compared those results to a control group of patients from our previous study (CJA group) that received no β1-adrenergic antagonist chronic treatment. The patients in this study were subjected to a standardized anesthetic protocol from induction up to 3 min after a standardized tetanic stimulus to the ulnar nerve at a frequency of 100 Hz and an amperage of 70 mA, for a duration of 30 s. Data were electronically recorded to obtain NOL, BIS, and heart rate values every 5 s for the duration of the protocol. The NOL maximal mean value reached after noxious stimulation was not different between our two cohorts (CJA: 30(14) versus BETANOL: 36(14) (p = 0.12)). There was no statistically significant difference between our cohorts in regards of the NOL AUC representing the variation of the NOL over a 180 s period (CJA: 595(356) versus BETANOL: 634(301) (p = 0.30)). However, a repeated measurement ANCOVA identified slight statistically significant differences between our cohorts in the peak of variation of the NOL index between 20 and 65 s after noxious stimulation, the NOL index of the cohort of beta-blocked patients being higher than the CJA patients. Moreover, the time to reach the maximum value was not different (CJA: 73(37) versus BETANOL: 63(41) (p = 0.35)). NOL sensitivity and specificity to detect a noxious stimulus under general anesthesia were similar in patients taking beta-blockers or not, and were better than those of heart rate and Bispectral index (AUC NOL 0.97, CI(0.92-1), versus AUC BIS 0.78, CI(0.64-0.89) and AUC HR 0.66, CI(0.5-0.8)). In conclusion, the NOL index is a reliable monitor to assess nociception in a population of patients under chronic beta-blocker therapy. Patients under such therapy achieve similar maximal NOL values over a 180 s period after a standardized noxious stimulus and the NOL variation over time, represented by the AUC is not significantly different from a cohort of non-beta-blocked patients. Whether the patient takes beta-blockers or not, sensitivity of the NOL index is greater than that seen for BIS index or heart rate to detect an experimental noxious stimulus under general anesthesia.
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Choi SN, Ji SH, Jang YE, Kim EH, Lee JH, Kim JT, Kim HS. Comparison of remifentanil consumption in pupillometry-guided versus conventional administration in children: a randomized controlled trial. Minerva Anestesiol 2020; 87:302-311. [PMID: 33300323 DOI: 10.23736/s0375-9393.20.14755-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Remifentanil is a commonly used opioid analgesic during anesthesia in children. Objective measurement of pain is required for adequate dosing of remifentanil. We investigated whether pupillometry-guided remifentanil administration can reduce intraoperative consumption of remifentanil in children. METHODS We performed a single-blinded, prospective, randomized controlled trial from December 2018 through June 2019. Children who were 3-12 years of age and classified as having an American Society of Anesthesiologists physical status I-II and undergoing elective surgery under general anesthesia were included. Fifty-six fulfilled the inclusion criteria, and fifty-four completed the study. Participants were randomly assigned to either a pupillometry or conventional group. Patients in both groups received target-controlled infusion of remifentanil. In the pupillometry group, the adjustment of the remifentanil effect site concentration was determined by the pupillary diameter, whereas in the conventional group, the adjustment was based on the anesthesiologist's experience. Primary outcome was intraoperative remifentanil consumption, divided by patient weight and infusion time (ng kg-1 min-1). RESULTS Remifentanil consumption was reduced by 25% in the pupillometry group compared to the conventional group (116.7±56.0 ng kg-1 min-1 vs. 155.8±64.9 ng kg-1 min-1, respectively; P=0.02). There were no differences in intra- and postoperative blood pressure and heart rate. The incidences of postoperative desaturation or nausea/vomiting were not significantly different. CONCLUSIONS Pupillometry-guided remifentanil administration in children undergoing general anesthesia can reduce the intraoperative remifentanil consumption.
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Affiliation(s)
- Sheung-Nyoung Choi
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Sang-Hwan Ji
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Young-Eun Jang
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Eun-Hee Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Ji-Hyun Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Jin-Tae Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea.,Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Hee-Soo Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, South Korea - .,Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, South Korea
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Bartholmes F, M. Malewicz N, Ebel M, K. Zahn P, H. Meyer-Frießem C. Pupillometric Monitoring of Nociception in Cardiac Anesthesia. DEUTSCHES ARZTEBLATT INTERNATIONAL 2020; 117:833-840. [PMID: 33593477 PMCID: PMC8021968 DOI: 10.3238/arztebl.2020.0833] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 12/19/2019] [Accepted: 05/27/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND High-dose opioids are conventionally used for cardiac anesthesia, but without monitoring of nociception. In non-cardiac surgical procedures the intra - operative dose of opioids can be individualized and reduced with pupillometric monitoring of the pupillary pain index (PPI; scale 1-9). A randomized controlled trial was carried out to explore whether pupillometry can be used for nociception monitoring in cardiac anesthesia and whether it leads to opioid reduction. METHODS A sample of 57 cardiac surgery patients receiving continuously administered sufentanil (initial dosage 0.7 μg*kg-¹*h-¹) was divided into a PPI group (sufentanil reduction if PPI<3 up to a minimum of 0.15 μg*kg-¹*h-¹, n=32) and a control group (standard anesthesia; n = 25). The primary outcome was the time from the end of anesthesia to extubation. The secondary outcomes were total intraoperative dose of sufentanil/noradrenaline, postoperative pain intensity (numeric rating scale [NRS] 0-10) and intraoperative awareness. German Clinical Trials Registry no. DRKS 00012329. RESULTS The primary outcome, extubation time, did not differ between the two groups (1.14 h, 95% confidence interval [-0.99; 3.27], p = 0.592). Compared with the control patients (68% male, age 70 ± 10.4 years, PPI 1.1 ± 0.2), the mean sufentanil infusion rate in the PPI patients (81% male, age 68 ± 10.3 years, PPI 1.1 ± 0.2) decreased by 81.8% (-0.68 μg*kg-¹*h-¹ [-0,7; -0.67], p<0.001) to the predetermined minimum level, without intraoperative awareness. Moreover, the noradrenaline dose was reduced by 56% (1235.51 μg [321.91; 2149.12], p = 0.005) and the postoperative pain intensity by 45% (2.11 NRS [0.93; 3.3] after 24 h, p = 0.003). CONCLUSION Pupillometry is appropriate for nociception monitoring in cardiac anesthesia. Thereby a considerable reduction of intraoperative opioids as well as increased intraoperative hemodynamic stability was achieved and postoperative opioid-induced hyperalgesia was prevented. The consistently low PPI scores, indicating adequate analgesia, suggest that further reduction of opioid doses is feasible.
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Affiliation(s)
- Felix Bartholmes
- BG-Universitätsklinikum Bergmannsheil gGmbH Bochum, Klinik für Anästhesie, Intensiv- und Schmerzmedizin
| | - Nathalie M. Malewicz
- BG-Universitätsklinikum Bergmannsheil gGmbH Bochum, Klinik für Anästhesie, Intensiv- und Schmerzmedizin
| | - Melanie Ebel
- BG-Universitätsklinikum Bergmannsheil gGmbH Bochum, Klinik für Anästhesie, Intensiv- und Schmerzmedizin
| | - Peter K. Zahn
- BG-Universitätsklinikum Bergmannsheil gGmbH Bochum, Klinik für Anästhesie, Intensiv- und Schmerzmedizin
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Berthoud V, Nguyen M, Appriou A, Ellouze O, Radhouani M, Constandache T, Grosjean S, Durand B, Gounot I, Bahr PA, Martin A, Nowobilski N, Bouhemad B, Guinot PG. Pupillometry pain index decreases intraoperative sufentanyl administration in cardiac surgery: a prospective randomized study. Sci Rep 2020; 10:21056. [PMID: 33273644 PMCID: PMC7713228 DOI: 10.1038/s41598-020-78221-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 11/20/2020] [Indexed: 11/09/2022] Open
Abstract
Pupillometry has proven effective for the monitoring of intraoperative analgesia in non-cardiac surgery. We performed a prospective randomized study to evaluate the impact of an analgesia-guided pupillometry algorithm on the consumption of sufentanyl during cardiac surgery. Fifty patients were included prior to surgery. General anesthesia was standardized with propofol and target-controlled infusions of sufentanyl. The standard group consisted of sufentanyl target infusion left to the discretion of the anesthesiologist. The intervention group consisted of sufentanyl target infusion based on the pupillary pain index. The primary outcome was the total intraoperative sufentanyl dose. The total dose of sufentanyl was lower in the intervention group than in the control group and (55.8 µg [39.7–95.2] vs 83.9 µg [64.1–107.0], p = 0.04). During the postoperative course, the cumulative doses of morphine (mg) were not significantly different between groups (23 mg [15–53] vs 24 mg [17–46]; p = 0.95). We found no significant differences in chronic pain at 3 months between the 2 groups (0 (0%) vs 2 (9.5%) p = 0.49). Overall, the algorithm based on the pupillometry pain index decreased the dose of sufentanyl infused during cardiac surgery. Clinical trial number: NCT03864016.
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Affiliation(s)
- Vivien Berthoud
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Maxime Nguyen
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France.,LNC UMR1231, University of Burgundy Franche-Comté, 21000, Dijon, France
| | - Anouck Appriou
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Omar Ellouze
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Mohamed Radhouani
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Tiberiu Constandache
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Sandrine Grosjean
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Bastien Durand
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Isabelle Gounot
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Pierre-Alain Bahr
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Audrey Martin
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Nicolas Nowobilski
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France
| | - Belaid Bouhemad
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France.,LNC UMR1231, University of Burgundy Franche-Comté, 21000, Dijon, France
| | - Pierre-Grégoire Guinot
- Anaesthesiology and Critical Care Department, Dijon University Hospital, 2 Bd Maréchal de Lattre de Tassigny, 21000, Dijon, France. .,LNC UMR1231, University of Burgundy Franche-Comté, 21000, Dijon, France.
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Rogozov V, Vaněk T. The importance and options of peroperative evaluation of nociception. ANESTEZIOLOGIE A INTENZIVNI MEDICINA 2020. [DOI: 10.36290/aim.2020.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Funcke S, Pinnschmidt HO, Brinkmann C, Wesseler S, Beyer B, Fischer M, Nitzschke R. Nociception level-guided opioid administration in radical retropubic prostatectomy: a randomised controlled trial. Br J Anaesth 2020; 126:516-524. [PMID: 33228979 DOI: 10.1016/j.bja.2020.09.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/30/2020] [Accepted: 09/24/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND This RCT investigated the effect of opioid titration by three different nociception monitoring devices or clinical signs during general anaesthesia. METHODS Ninety-six patients undergoing radical retropubic prostatectomy with propofol/remifentanil anaesthesia were randomised into one of four groups to receive remifentanil guided by one of three nociception monitoring devices (surgical pleth index [SPI], pupillary pain index [PPI], or nociception level [NOL]) or by clinical judgement (control). Intraoperative remifentanil requirement was the primary endpoint, whereas recovery parameters and stress hormone levels were secondary endpoints. RESULTS The mean [95% confidence interval {CI}] remifentanil administration rate differed between the groups: control 0.34 (0.32-0.37), SPI 0.46 (0.38-0.55), PPI 0.07 (0.06-0.08), and NOL 0.16 (0.12-0.21) μg kg-1 min-1(P<0.001). Intraoperative cessation of remifentanil administration occurred in different numbers (%) of patients: control 0 (0%), SPI 1 (4.3%), PPI 18 (75.0%), and NOL 11 (47.8%); P=0.002. The area under the curve analyses indicated differences in cumulative cortisol levels (mg L-1 min-1) amongst the groups: control 37.9 (33.3-43.1), SPI 38.6 (33.8-44.2), PPI 72.1 (63.1-82.3), and NOL 54.4 (47.6-62.1) (mean [95% CI]). Pairwise group comparison results were as follows: control vs SPI, P=0.830; control vs PPI, P<0.001; control vs NOL, P=0.001; SPI vs PPI, P<0.001; SPI vs NOL, P=0.002; and PPI vs NOL, P=0.009. CONCLUSIONS The nociception monitoring devices and clinical signs reflect the extent of nociception differently, leading to dissimilar doses of remifentanil. Very low remifentanil doses were associated with an increase and higher remifentanil doses were accompanied by a decrease in serum cortisol concentrations. Use of nociception monitoring devices for guiding intra-operative opioid dosing needs further validation. CLINICAL TRIAL REGISTRATION NCT03380949.
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Affiliation(s)
- Sandra Funcke
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | | | - Charlotte Brinkmann
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | - Stefan Wesseler
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | - Burkhard Beyer
- Martini-Klinik, Prostate Cancer Centre, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Marlene Fischer
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | - Rainer Nitzschke
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany.
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Kim JH, Jwa EK, Choung Y, Yeon HJ, Kim SY, Kim E. Comparison of Pupillometry With Surgical Pleth Index Monitoring on Perioperative Opioid Consumption and Nociception During Propofol-Remifentanil Anesthesia: A Prospective Randomized Controlled Trial. Anesth Analg 2020; 131:1589-1598. [PMID: 33079883 DOI: 10.1213/ane.0000000000004958] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Intraoperative monitoring with pupillometry has shown promising results for nociception/antinociception balance monitoring. However, its benefits in clinical practice remain unproven. The aim of this study was to evaluate the efficacy of intraoperative pupillometry monitoring on intraoperative opioid consumption and postoperative pain compared to surgical pleth index (SPI), another widely investigated monitoring. METHODS American Society of Anesthesiologists (ASA) I-II patients scheduled for elective laparoscopic cholecystectomy were included. This prospective, parallel-arm, single-center study was conducted in 2 steps. First, we evaluated the feasibility of using pupillometry and SPI monitoring compared with conventional hemodynamic monitoring. Next, a parallel-arm, double-blind randomized study compared the peak postoperative pain measured with numerical rating scale (NRS) from 0 (no pain) to 10 (extreme pain) as a primary outcome between pupillometry (pupillometry group, n = 43) and SPI monitoring (SPI group, n = 43) using Mann-Whitney U test. Secondary outcomes included intraoperative remifentanil consumption, postoperative opioid responsiveness (a decrease in NRS by ≥1 after fentanyl administrations), number of analgesic administrations, and opioid-related complications. RESULTS In the preliminary study (n = 50), remifentanil consumption was less under pupillometry monitoring compared to SPI monitoring, and peak postoperative pain was lower under pupillometry compared to conventional monitoring. In the main study (n = 86), peak postoperative pain and intraoperative remifentanil consumption were lower in the pupillometry group (median [first to third quartile], 5 [4-6]; mean ± standard deviation [SD], 0.078 ± 0.019 μg·kg·minute) compared to the SPI group (7 [5-8] and 0.0130 ± 0.051 μg·kg·minute; P < .001), with the median difference in peak postoperative pain of -1 and its 95% confidence interval between -2 and -0.5. The pupillometry group had better responsiveness to fentanyl (84.6% vs 61.0%; P = .005) and lower number of analgesic administrations (2 [1-2] vs 2 [1-3]; P = .048) compared to the SPI group. CONCLUSIONS Intraoperative pupillometry monitoring reduced intraoperative remifentanil consumption and postoperative pain. It may be an alternative option for intraoperative opioid control under general anesthesia in adult patients.
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Affiliation(s)
- Jong Hae Kim
- From the Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea
| | - Eun Kyung Jwa
- Division of Hepatobiliary Surgery, Department of Surgery, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea
| | - Youjin Choung
- Department of Anesthesiology and Pain Medicine, Hanyang University Medical Center, Seoul, Republic of Korea
| | - Hyo Jin Yeon
- Department of Anesthesiology and Pain Medicine, Hanyang University Medical Center, Seoul, Republic of Korea
| | - Soo Yeon Kim
- Department of Anesthesiology and Pain Medicine, Hanyang University Medical Center, Seoul, Republic of Korea
| | - Eugene Kim
- Department of Anesthesiology and Pain Medicine, Hanyang University Medical Center, College of Medicine, Hanyang University, Seoul, Republic of Korea
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Meijer FS, Niesters M, van Velzen M, Martini CH, Olofsen E, Edry R, Sessler DI, van Dorp ELA, Dahan A, Boon M. Does nociception monitor-guided anesthesia affect opioid consumption? A systematic review of randomized controlled trials. J Clin Monit Comput 2020; 34:629-641. [PMID: 31327102 PMCID: PMC7367908 DOI: 10.1007/s10877-019-00362-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/16/2019] [Indexed: 12/23/2022]
Abstract
Monitors that estimate nociception during anesthesia may be used to guide opioid and other analgesics administration to optimize anesthesia care and possibly outcome. We reviewed the literature to evaluate current evidence of the effect of nociception-guided management over standard anesthesia practice during surgery. A systematic review of the literature on the effect of nociception monitoring on anesthesia practice was conducted. Reports were eligible if they compared nociception-guided anesthesia to standard practice during surgery. Primary endpoint of this review is intraoperative opioid consumption. Secondary endpoints included hemodynamic control, postoperative pain and pain treatment. We identified 12 randomized controlled trials that compared one of five different nociception monitoring techniques to standard anesthesia care. Most studies were single center studies of small sample size. Six studies reported intraoperative opioid consumption as primary outcome. There was considerable variability with respect to surgical procedure and anesthesia technique. For nociception monitors that were investigated by more than one study, analysis of the pooled data was performed. The surgical plethysmographic index was the only monitor for which an intra operative opioid sparing effect was found. For the other monitors, either no effect was detected, or pooled analysis could not be performed due to paucity of study data. On secondary outcomes, no consistent effect of nociception-guided anesthesia could be established. Although some nociception monitors show promising results, no definitive conclusions regarding the effect of nociception monitoring on intraoperative opioid consumption or other anesthesia related outcome can be drawn.Clinical trial number PROSPERO ID 102913.
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Affiliation(s)
- Fleur S. Meijer
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Marieke Niesters
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Monique van Velzen
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Chris H. Martini
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Erik Olofsen
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Ruth Edry
- Department of Anesthesiology, Rambam Medical Centre, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| | - Daniel I. Sessler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH USA
| | - Eveline L. A. van Dorp
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Albert Dahan
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Martijn Boon
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
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Vide S, Castro A, Correia R, Cabral T, Lima D, Nunes CS, Gambús P, Amorim P. Foreseeing postoperative pain in neurosurgical patients: pupillometry predicts postoperative pain ratings-an observational study. J Clin Monit Comput 2020; 35:1111-1118. [PMID: 32729066 DOI: 10.1007/s10877-020-00570-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 07/23/2020] [Indexed: 01/03/2023]
Abstract
Pupillary reflex dilation (PRD) is triggered by noxious stimuli and diminished by opioid administration. In the postoperative period, PRD has been shown to be correlated with pain reporting and a useful tool to guide opioid administration. In this study we assessed whether pupillary measurements taken before extubation were related with the patient's reported pain in the Post-Anesthesia Care Unit (PACU) using the Numerical Rating Scale (NRS). Our objective was to evaluate the correlation of PRD and pupillary variables measured intraoperatively with postoperative pain under the same opioid concentration. This was a prospective observational study of 26 neurosurgical patients undergoing general anesthesia exclusively with propofol and remifentanil. A portable infrared pupillometer was used to provide an objective measure of pupil size and PRD (using the Pupillary Pain Index) before extubation. Pain ratings were obtained from patients after recovery of consciousness, while remifentanil was maintained at 2 ng/mL. A significant correlation was observed between NRS scores and pre-extubation PPI (rS = 0.62; P = 0.002), as well as between NRS scores and pupil diameter before tetanic stimulation PPI (rS = 0.56, P = 0.006). We also found a negative correlation between pupil diameter and age (rS = - 0.42, P = 0.04). The statistically significant correlation between pre-extubation PPI scores and NRS scores, as well as between the pupillary diameter before tetanic stimulation and NRS scores suggest the possibility of titrating analgesia at the end of the intraoperative period based on individual responses. This could allow clinicians to identify the ideal remifentanil concentration for the postoperative period.
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Affiliation(s)
- Sérgio Vide
- Department of Anesthesia, Unidade Local de Saúde de Matosinhos - Hospital Pedro Hispano, R. de Dr. Eduardo Torres, 4464-513, Matosinhos, Portugal. .,Department of Anesthesiology, Center for Clinical Research in Anesthesia, Centro Hospitalar do Porto, Porto, Portugal. .,Systems Pharmacology Effect Control & Modeling (SPEC-M) Research Group, Anesthesiology Department, Hospital CLINIC de Barcelona, Barcelona, Spain.
| | - Ana Castro
- Hospital Santa Maria Maior, Barcelos, Portugal
| | - Rui Correia
- Department of Anesthesiology, Center for Clinical Research in Anesthesia, Centro Hospitalar do Porto, Porto, Portugal
| | - Tiago Cabral
- Department of Anesthesia, Hospital Divino Espírito Santo, Ponta Delgada, Portugal
| | - Deolinda Lima
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Catarina S Nunes
- Department of Anesthesiology, Center for Clinical Research in Anesthesia, Centro Hospitalar do Porto, Porto, Portugal.,Department of Sciences and Technology, Universidade Aberta, Porto, Portugal
| | - Pedro Gambús
- Systems Pharmacology Effect Control & Modeling (SPEC-M) Research Group, Anesthesiology Department, Hospital CLINIC de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), NeuroImmunology Research Group, Barcelona, Spain
| | - Pedro Amorim
- Department of Anesthesiology, Center for Clinical Research in Anesthesia, Centro Hospitalar do Porto, Porto, Portugal
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