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Van Santvliet H, Vereecke HEM. Progress in the validation of nociception monitoring in guiding intraoperative analgesic therapy. Curr Opin Anaesthesiol 2024; 37:352-361. [PMID: 38841919 DOI: 10.1097/aco.0000000000001390] [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: 06/07/2024]
Abstract
PURPOSE OF REVIEW This article summarizes the current level of validation for several nociception monitors using a categorized validation process to facilitate the comparison of performance. RECENT FINDINGS Nociception monitors improve the detection of a shift in the nociception and antinociception balance during anesthesia, guiding perioperative analgesic therapy. A clear overview and comparison of the validation process for these monitors is missing. RESULTS Within a 2-year time-frame, we identified validation studies for four monitors [analgesia nociception index (ANI), nociception level monitor (NOL), surgical pleth index (SPI), and pupillometry]. We categorized these studies in one out of six mandatory validation steps: developmental studies, clinical validation studies, pharmacological validation studies, clinical utility studies, outcome improvement studies and economical evaluation studies. The current level of validation for most monitors is mainly focused on the first three categories, whereas ANI, NOL, and SPI advanced most in the availability of clinical utility studies and provide confirmation of a clinical outcome improvement. Analysis of economical value for public health effects is not yet publicly available for the studied monitors. SUMMARY This review proposes a stepwise structure for validation of new monitoring technology, which facilitates comparison between the level of validation of different devices and identifies the need for future research questions.
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Affiliation(s)
| | - Hugo E M Vereecke
- Department of Anesthesia and Reanimation, AZ Sint-Jan Brugge AV, Brugge, Belgium
- University Medical Center Groningen and University of Groningen, Groningen, The Netherlands
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Shi L, Jin DN, Cao XJ, Liu H, Gu WJ, Zhang M, Lu Q. Assessment of sedation by automated pupillometry in critically ill patients: a prospective observational study. Br J Anaesth 2024; 132:877-885. [PMID: 38429209 DOI: 10.1016/j.bja.2024.02.001] [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: 09/11/2023] [Revised: 02/05/2024] [Accepted: 02/09/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Quantitative measurement of pupil change has not been assessed against the Richmond Agitation and Sedation Scale (RASS) and spectral edge frequency (SEF) during sedation. The aim of this study was to evaluate pupillometry against these measures in sedated critically ill adult patients. METHODS In ventilated and sedated patients, pupillary variables were measured by automated pupillometry at each RASS level from -5 to 0 after discontinuation of hypnotics, while processed electroencephalogram variables were displayed continuously and SEF was recorded at each RASS level. Correlations were made between percentage pupillary light reflex (%PLR) and RASS, and between %PLR and SEF. The ability of %PLR to differentiate light sedation (RASS ≥-2), moderate (RASS =-3), and deep sedation (RASS ≤-4) was assessed by areas under receiver operating characteristic (ROC) curves. RESULTS A total of 163 paired measurements were recorded in 38 patients. With decreasing sedation depth, median %PLR increased progressively from 20% (interquartile range 17-25%) to 36% (interquartile range 33-40%) (P<0.001). Strong correlations were found between %PLR and RASS (Rho=0.635) and between %PLR and SEF (R=0.641). Area under the curve (AUC) of 0.87 with a %PLR threshold of 28% differentiated moderate/light sedation from deep sedation with sensitivity of 83% and specificity of 83%. An AUC of 0.82 with a threshold of 31% distinguished light sedation from moderate/deep sedation with a sensitivity of 81% and a specificity of 75%. CONCLUSIONS Quantitative assessment of %PLR correlates with other indicators of sedation depth in critically ill patients.
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Affiliation(s)
- Lin Shi
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Emergency Department, The State Key Laboratory for Complex, Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China
| | - Dan-Ni Jin
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China
| | - Xia-Jing Cao
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China
| | - Hong Liu
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China
| | - Wen-Jie Gu
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China
| | - Mao Zhang
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China.
| | - Qin Lu
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Key Laboratory of The Diagnosis and Treatment of Severe Trauma and Burn of Zhejiang Province, Hangzhou, Zhejiang, China; Zhejiang Province Clinical Research Center for Emergency and Critical Care Medicine, Hangzhou, Zhejiang, China.
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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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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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Rodieux F, Storelli F, Curtin F, Manzano S, Gervaix A, Posfay-Barbe KM, Desmeules J, Daali Y, Samer CF. Evaluation of Pupillometry for CYP2D6 Phenotyping in Children Treated with Tramadol. Pharmaceuticals (Basel) 2023; 16:1227. [PMID: 37765034 PMCID: PMC10537526 DOI: 10.3390/ph16091227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/20/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
Following the contraindication of codeine use in children, increasing use of tramadol has been observed in pain management protocols. However, tramadol's pharmacokinetics (PK) and pharmacodynamics are influenced by cytochrome P450 (CYP)2D6 activity, similarly to codeine. Previous studies in adults have demonstrated a correlation between pupillary response and tramadol PK. Our objective was to evaluate pupillometry as a phenotyping method to assess CYP2D6 activity in children treated with tramadol. We included 41 children (mean age 11 years) receiving a first dose of tramadol (2 mg/kg) in the emergency room (ER) as part of their routine care. CYP2D6 phenotyping and genotyping were performed. The concentrations of tramadol and its active metabolite, M1, were measured, and static and dynamic pupillometry was conducted using a handheld pupillometer at the time of tramadol administration and during the ER stay. Pupillometric measurements were obtained for 37 children. Tramadol affected pupillary parameters, with a decrease in pupil diameter in 83.8% of children (p = 0.002) (mean decrease 14.1 ± 16.7%) and a decrease in reflex amplitude constriction in 78.4% (p = 0.011) (mean decrease 17.7 ± 34.5%) at T150 compared to T0. We were unable to identify a correlation between pupillometry measurements and CYP2D6 activity. Likely confounding factors include light intensity, pain, and stress, making the procedure less feasible in paediatric emergency settings.
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Affiliation(s)
- Frédérique Rodieux
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
| | - Flavia Storelli
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
| | - François Curtin
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
| | - Sergio Manzano
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Gynecology & Obstetrics, Geneva University Hospitals, University of Geneva, 1205 Geneva, Switzerland
| | - Alain Gervaix
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Gynecology & Obstetrics, Geneva University Hospitals, University of Geneva, 1205 Geneva, Switzerland
| | - Klara M. Posfay-Barbe
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Division of General Pediatrics, Department of Pediatrics, Gynecology & Obstetrics, Geneva University Hospitals, University of Geneva, 1205 Geneva, Switzerland
| | - Jules Desmeules
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- School of Pharmaceutical Sciences, University of Geneva, 1205 Geneva, Switzerland
| | - Youssef Daali
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- School of Pharmaceutical Sciences, University of Geneva, 1205 Geneva, Switzerland
| | - Caroline F. Samer
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- School of Pharmaceutical Sciences, University of Geneva, 1205 Geneva, Switzerland
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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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Fratino S, Garré A, Garufi A, Hafidi S, Migliorino E, Stropeni S, Bogossian EG, Ndieugnou Djangang N, Albano G, Creteur J, Peluso L, Taccone FS. Evaluation of nociception in unconscious critically ill patients using a multimodal approach. Anaesth Crit Care Pain Med 2023; 42:101175. [PMID: 36396073 DOI: 10.1016/j.accpm.2022.101175] [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: 06/27/2022] [Revised: 09/05/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022]
Abstract
This prospective observational study included 80 adults (>18 years) patients admitted to the intensive care unit who were unconscious (Glasgow Coma Scale [GCS] score <9 with a motor response <5) and receiving mechanical ventilation. A tetanic stimulation was used to assess nociception; automated pupillometry (Algiscan, ID-MED, France) was used to compute the pupillary pain index score (PPI), with a PPI > 4 considered as nociception. Concomitantly, the number of skin conductance fluctuations (NSCF) per second, measured using a Skin Conductance Algesimeter (SCA, MEDSTORM Innovation AS, Norway; > 0.27 fluctuations/sec indicating nociception), and the instantaneous Analgesia Nociception Index (iANI, MDoloris Medical Systems, France; <50 indicating nociception) were collected. Tetanic stimulation resulted in a median pupillary dilation of 16 [6-25]% and a PPI of 5 [2-7]. According to the PPI assessment, 44 patients (55%) had nociception, whereas 23 (29%) and 18 (23%) showed nociception according to the algesimeter and iANI assessment, respectively. No significant changes in measured physiologic variables were observed after the tetanic stimulation. There were no correlations between PPI, post-stimulation iANI, and SCA-derived variables. There were no differences in PPI, iANI, and SCA variables in patients with low and normal baseline EEG power at baseline. PERSPECTIVES: Detection of nociception varies across different devices in unconscious critically ill patients. Further studies are required to understand which method to implement for analgesic administration in this patient population.
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Affiliation(s)
- Sara Fratino
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium.
| | - Annalisa Garré
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | - Alessandra Garufi
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | - Sofia Hafidi
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | - Ernesto Migliorino
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | - Serena Stropeni
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | - Elisa Gouvea Bogossian
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | | | - Giovanni Albano
- Department of Anesthesiology and Intensive Care, Humanitas Gavazzeni, Bergamo, Italy
| | - Jacques Creteur
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
| | - Lorenzo Peluso
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium; Department of Anesthesiology and Intensive Care, Humanitas Gavazzeni, Bergamo, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Fabio Silvio Taccone
- Department of Intensive Care, Erasme University Hospital - Université Libre de Bruxelles, Brussels, Belgium
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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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Pupil Size and Reactivity in Pediatric Patients With Sickle Cell Disease. J Pediatr Hematol Oncol 2023; 45:e44-e47. [PMID: 34966094 DOI: 10.1097/mph.0000000000002387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 11/20/2021] [Indexed: 02/03/2023]
Abstract
Pupil size and reactivity have been studied to objectively measure pain utilizing pupillometry measurements. Given the challenges associated with treating vaso-occlusive pain in pediatric patients with sickle cell disease, better assessment tools are needed. The objective of this study is to establish normative values for pupil size and reactivity in pediatric patients with sickle cell disease with the hope that pupillometry can be used as a tool to objectively measure pain and response to treatment with analgesic medications. Readings were performed using a NeurOptics PLR-2000 pupillometer. Forty-four males and 38 females, all black, were studied. Their median age was 11 years (range: 2 to 21). When comparing our participants with white participants in a previously published pediatric study, there was a significant difference in maximum constriction velocity ( t =3.45, P =0.009), maximum pupil size ( t =-5.57 mm, P <0.0001), and minimum pupil size ( t =-3.24, P =0.002). There was no significant difference in pupil size and reactivity between patients with sickle cell disease and black patients without the disease when compared with the previously published study. Therefore, further investigation of pupillometry within the black population during vaso-occlusive crisis and in the "well state" is warranted in pediatric patients with sickle cell disease.
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Predicting personalised remifentanil effect site concentration for surgical incision using the nociception level index: A prospective calibration and validation study. Eur J Anaesthesiol 2022; 39:918-927. [PMID: 36125017 DOI: 10.1097/eja.0000000000001751] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Inadequate antinociception can cause haemodynamic instability. The nociception level (NOL) index measures response to noxious stimuli, but its capacity to predict optimal antinociception is unknown. OBJECTIVE To determine if NOL index change to a tetanic stimulus in cardiac and noncardiac surgery patients could predict the required remifentanil concentration for haemodynamic stability at skin incision. DESIGN A prospective two-phase cohort study. SETTING University hospital. PATIENTS Patients undergoing remifentanil-propofol target controlled infusion (TCI) anaesthesia. INTERVENTIONS During the calibration phase, investigators evaluated the tetanic stimulus induced NOL index change under standardised TCI remifentanil-propofol anaesthesia during a no-touch period [bispectral index (BIS) between 40 and 60, NOL index under 15]. If the NOL index change was 20 or greater following tetanic stimulation, investigators repeated the tetanus at higher remifentanil concentrations until the response was blunted. Surgeons incised the skin at this remifentanil concentration. The investigators derived a prediction model and in the validation phase calculated, using the NOL response to a single tetanus, the required incision remifentanil concentration for the start of surgery. MAIN OUTCOME Haemodynamic stability at incision [i.e. maximum heart rate (HR) < 20% increase from baseline, minimum HR (40 bpm) and mean arterial pressure (MAP) ± <20% of baseline]. RESULTS During the calibration phase, no patient had hypertension. Two patients had a HR increase slightly greater than 20% (25.4 and 26.7%) within the first 2 min of surgery, but neither of these two patients had a HR above 76 bpm. Two patients were slightly hypotensive after incision (MAP 64 and 73 mmHg). During the validation phase, neither tachycardia nor hypotension occurred, but MAP increased to 21.5% above baseline for one patient. CONCLUSION During a no-touch period in patients under steady-state general anaesthesia [propofol effect site concentration (Ce) required for BIS between 40 and 60], the NOL index response to a tetanic stimulus under remifentanil antinociception can be used to personalise remifentanil Ce for the start of surgery and ensure stable haemodynamics. TRIAL REGISTRATION ClinicalTrials.gov: NCT03324269.
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Evrard B, Lefebvre C, Spiry P, Hodler C, Chapellas C, Youssef B, Gauthier F, Marais L, Labrunie A, Douchez M, Senges P, Cros J, Nathan-Denizot N. Evaluation of the Analgesia Nociception Index and videopupillometry to predict post-tonsillectomy morphine requirements in children : a single-centre, prospective interventional study. BJA OPEN 2022; 3:100024. [PMID: 37588574 PMCID: PMC10430817 DOI: 10.1016/j.bjao.2022.100024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 08/18/2023]
Abstract
Background Tonsil surgery causes significant and challenging postoperative pain. The Analgesia Nociception Index (ANI) and videopupillometry are two techniques of interest to monitor nociception in adults and may predict postoperative morphine requirements. We hypothesised that these techniques could predict the need for morphine after tonsillectomy in children. The main objective was to assess the prognostic significance of ANI and videopupillometry, measured at the end of surgery, on morphine consumption determined by a Face, Legs, Activity, Cry, Consolability (FLACC) scale score >3 in the Post Anesthesia Care Unit (PACU). Methods A single-centre, prospective, interventional study evaluating children between 2 and 7 yr old undergoing tonsil surgery was performed. ANI and videopupillometry with tetanic stimulation were measured under general anaesthesia 4 min after the end of the surgical procedure. Each child was evaluated every 10 min by a nurse using the FLACC scale in the PACU and blinded to the measurements performed in the operating theatre. Results Eighty-nine children were analysed and 39 (44%) received morphine in the PACU. Neither ANI values nor videopupillometry values were predictive of postoperative morphine consumption (areas under the receiver operating characteristic curve 0.54, 95% confidence interval [CI; 0.42-0.65], and P=0.57; and 0.52, 95% CI [0.41-0.63], and P=0.69, respectively). Neither ANI values nor videopupillometry values were correlated to the maximum FLACC scale score in the PACU with ρ=0.04 (P=0.71) and ρ=0.06 (P=0.57), respectively. Conclusions Neither ANI nor videopupillometry performed at the end of surgery can predict morphine consumption in the PACU in children undergoing tonsillectomy.
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Affiliation(s)
- Bruno Evrard
- Medical-surgical ICU, Dupuytren Teaching Hospital, Limoges, France
- Inserm CIC, 1435, Dupuytren Teaching Hospital, Limoges, France
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Cyrielle Lefebvre
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Paul Spiry
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Charles Hodler
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Catherine Chapellas
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Baher Youssef
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - François Gauthier
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Loïc Marais
- Research and Innovation Department, Dupuytren Teaching Hospital, Limoges, France
| | - Anaïs Labrunie
- Department of Epidemiology, Biostatistics and Research Methodology, Dupuytren Teaching Hospital, Limoges, France
| | - Marie Douchez
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Patrick Senges
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Jérôme Cros
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
| | - Nathalie Nathan-Denizot
- Department of Anaesthesiology and Intensive Care, Dupuytren Teaching Hospital, Limoges, France
- Medicine Faculty, University of Limoges, Limoges, France
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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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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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Martineau-Lessard C, Arbour C, Germélus NÉ, Williamson D, De Beaumont L, Bernard F. Pupil Light Reflex for the Assessment of Analgesia in Critically Ill Sedated Patients With Traumatic Brain Injury: A Preliminary Study. J Neurosci Nurs 2022; 54:6-12. [PMID: 35007259 DOI: 10.1097/jnn.0000000000000627] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT BACKGROUND: Analgesia monitoring is essential to preserve comfort in critically ill sedated patients with traumatic brain injury (TBI). Although pupil dilation (PD) and pain behaviors can be used to assess analgesia, these indicators require application of noxious stimulations for elicitation. Recently, the pupillary light reflex (PLR) has emerged as a nonnoxious parameter that may be used to predict analgesia requirements in non-brain-injured patients. Here, we explored whether PLR can be used for the purpose of analgesia monitoring in critically ill sedated TBI patients. METHODS: Fifteen mechanically ventilated TBI patients (11 men; 54 ± 20 years) under continuous analgesia and sedation infusions were assessed at predefined time within 72 hours of intensive care unit admission. Data collection was performed using video-pupillometry and the Behavioral Pain Scale. At each assessment, pupil size and PLR at rest were recorded followed immediately by the documentation of PD and pain behaviors elicited by a calibrated noxious stimulus. Blood concentrations of analgesics/sedatives were monitored. RESULTS: One hundred three assessments were completed. PLR resulted in an average decrease of 19% in pupil diameter, and PD resulted in an average increase of 10% in pupil diameter. Variations in PLR and PD were more pronounced in subjects who showed a Behavioral Pain Scale score greater than 3 (a recognized sign of subanalgesia) compared with those with no behavioral reaction. Multiple regression analyses suggest a significant overlap between fluctuations in pupillary reflexes and blood levels of fentanyl, not propofol. CONCLUSION: In our sample, percentages of variation in PLR and PD were found to be directly representative of TBI patients' fentanyl blood concentration. Considering information about blood drug concentration is generally not available at bedside, PLR could be used as a proxy to assess analgesia requirements before a nociceptive procedure in critically ill sedated TBI patients who are vulnerable to stress.
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Zhou XL, Xing LJ, Liu HR, Qian Y, Zhu J, Xie H. Pupil Diameter Changes after Anesthesia with Different Doses of Sufentanil under Ultrasound Monitoring. Int J Clin Pract 2022; 2022:6320973. [PMID: 35910068 PMCID: PMC9303082 DOI: 10.1155/2022/6320973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 06/15/2022] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE This study aims to observe the changes in pupil diameter (PD) after anesthesia with different doses of sufentanil with the ultrasound method and observe whether pupil contraction is correlated with hemodynamic changes and bispectral index (BIS) values. METHODS A total of 124 patients between the ages of 18-65 with ASA I-II undergoing general anesthesia for surgery were enrolled in the study. According to the sufentanil dose initially injected, they were randomly divided into groups P, S1, S2, and S3, with 31 cases in each group. Group P was injected with normal saline. Group S1 was injected with 0.2 μg/kg of sufentanil. Group S2 was injected with 0.4 μg/kg of sufentanil. Group S3 was injected with 0.6 μg/kg of sufentanil. Following propofol administration and eye closure, the pupil diameter (PD) of the patients in the four groups was observed and measured by ultrasound after the loss of consciousness (T1) and within 3 min after the sufentanil injection at an interval of 30 s (30 s (T2), 1 min (T3), 1 min 30 s (T4), 2 min (T5), 2 min 30 s (T6), and 3 min (T7)). PD, systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), and BIS values at T1-T7 were recorded. RESULTS The ultrasonic method was used to observe that different doses of sufentanil could make the patients' pupils contract. During anesthesia induction, the changes in PD have a positive correlation with SBP, DBP, HR, and BIS values. CONCLUSION Ultrasound can become a new noninvasive method to monitor pupil changes during general anesthesia, and ultrasonic observation of pupil changes has great potential for individualized analgesia management in the perioperative period.
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Affiliation(s)
- Xue-Lan Zhou
- Department of Anesthesia, The Second Affiliated Hospital of Soochow University, Suzhou 215026, China
| | - Li-Ji Xing
- Department of Anesthesia, The Second Affiliated Hospital of Soochow University, Suzhou 215026, China
| | - Hai-Rui Liu
- Department of Anesthesia, The Second Affiliated Hospital of Soochow University, Suzhou 215026, China
| | - Yu Qian
- Department of Anesthesia, The Second Affiliated Hospital of Soochow University, Suzhou 215026, China
| | - Jiang Zhu
- Department of Anesthesia, The Second Affiliated Hospital of Soochow University, Suzhou 215026, China
| | - Hong Xie
- Department of Anesthesia, The Second Affiliated Hospital of Soochow University, Suzhou 215026, China
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Marco-Ariño N, Vide S, Agustí M, Chen A, Jaramillo S, Irurzun-Arana I, Pacheco A, Gonzalez C, Jensen EW, Capsi-Morales P, Valencia JF, Troconiz IF, Gambus PL, Larson MD. Semimechanistic models to relate noxious stimulation, movement, and pupillary dilation responses in the presence of opioids. CPT-PHARMACOMETRICS & SYSTEMS PHARMACOLOGY 2021; 11:581-593. [PMID: 34716984 PMCID: PMC9124350 DOI: 10.1002/psp4.12729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/26/2021] [Accepted: 09/13/2021] [Indexed: 01/03/2023]
Abstract
Intraoperative targeting of the analgesic effect still lacks an optimal solution. Opioids are currently the main drug used to achieve antinociception, and although underdosing can lead to an increased stress response, overdose can also lead to undesirable adverse effects. To better understand how to achieve the optimal analgesic effect of opioids, we studied the influence of remifentanil on the pupillary reflex dilation (PRD) and its relationship with the reflex movement response to a standardized noxious stimulus. The main objective was to generate population pharmacodynamic models relating remifentanil predicted concentrations to movement and to pupillary dilation during general anesthesia. A total of 78 patients undergoing gynecological surgery under general anesthesia were recruited for the study. PRD and movement response to a tetanic stimulus were measured multiple times before and after surgery. We used nonlinear mixed effects modeling to generate a population pharmacodynamic model to describe both the time profiles of PRD and movement responses to noxious stimulation. Our model demonstrated that movement and PRD are equally depressed by remifentanil. Using the developed model, we changed the intensity of stimulation and simulated remifentanil predicted concentrations maximizing the probability of absence of movement response. An estimated effect site concentration of 2 ng/ml of remifentanil was found to inhibit movement to a tetanic stimulation with a probability of 81%.
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Affiliation(s)
- Nicolás Marco-Ariño
- Pharmacometrics & Systems Pharmacology, Department of Pharmaceutical Technology and Chemistry, School of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
| | - Sergio Vide
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain.,Center for Clinical Research in Anesthesia, Serviço de Anestesiologia, Centro Hospitalar do Porto, Porto, Portugal
| | - Mercè Agustí
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Andrew Chen
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Sebastián Jaramillo
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Itziar Irurzun-Arana
- Pharmacometrics & Systems Pharmacology, Department of Pharmaceutical Technology and Chemistry, School of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
| | - Adrià Pacheco
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Carmen Gonzalez
- Department of Research and Development, Quantium Medical, Mataró, Barcelona, Spain
| | - Erik W Jensen
- Department of Research and Development, Quantium Medical, Mataró, Barcelona, Spain
| | - Patricia Capsi-Morales
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain
| | - José F Valencia
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain.,Electronic Engineering Program, School of Engineering, Universidad de San Buenaventura, Cali, Colombia
| | - Iñaki F Troconiz
- Pharmacometrics & Systems Pharmacology, Department of Pharmaceutical Technology and Chemistry, School of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain.,Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain
| | - Pedro L Gambus
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain.,NeuroImmunology Research Group, Institut d'Investigacions Biomèdiques August Pi I Sunyer, Barcelona, Spain
| | - Merlin D Larson
- Systems Pharmacology Effect Control & Modeling Research Group, Anesthesiology Department, Hospital Clinic de Barcelona, Barcelona, Spain.,Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, California, USA
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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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22
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Detection of opioid effect with pupillometry. Auton Neurosci 2021; 235:102869. [PMID: 34474355 DOI: 10.1016/j.autneu.2021.102869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/16/2021] [Accepted: 08/12/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Opioids produce pupillary constriction but their impact on pupillary unrest and the dynamic parameters of the pupillary light reflex have not been characterized. Given the increasing use of portable pupillometers for care of critically ill patients, it is important to distinguish between opioid effects on the pupil versus those that have been reported to arise from traumatic and ischemic brain insults. We undertook this study to determine which pupillary responses are most profoundly and consistently affected by a progressive infusion of remifentanil. METHODS We studied the effect of remifentanil on the pupil using two portable infrared pupillometers in 18 volunteers. One pupillometer measured pupillary unrest in ambient light (PUAL) and the other pupillometer measured neurological pupillary index (NPi), constriction velocity (CV), pupil diameter (PD), latency, and % reflex (% reflex) following a transient light flash. Remifentanil was administered at predetermined weight-adjusted rates to raise opioid effect site concentration up to a range known to produce respiratory depression and oxyhemoglobin desaturation, based on a previously published pharmacokinetic model. RESULTS PUAL was ablated by remifentanil, declining 94 ± 6% from baseline at the time of maximum drug effect. Other pupillary measurements decreased 50-65% from baseline. NPi was unchanged. At the time of oxyhemoglobin desaturation, deviations in PD, CV, and % reflex were widely scattered, whereas PUAL consistently approached zero. CONCLUSION PUAL is a highly specific indicator of central opioid effect. As a non-invasive measure, it may provide useful data to clinicians who prescribe opioids.
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23
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Analgesia Nociception Index (ANI) and ephedrine: a dangerous liasion. J Clin Monit Comput 2021; 35:953-954. [PMID: 33730304 DOI: 10.1007/s10877-021-00682-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 10/21/2022]
Abstract
The Analgesia Nociception Index is a dimensionless scale derived from the heart rate variability; by analyzing the heart rate variability oscillations, it reflects the activity of the sympathetic and parasympathetic nervous systems and ultimately helps to evaluate the Nociception-Antinociception balance during anesthesia and surgery. Drugs like ephedrine affect the heart rate variability inducing artifacts in the ANI readings which should be taken into account in the clinical practice and in clinical research.
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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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25
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Fratino S, Peluso L, Talamonti M, Menozzi M, Costa Hirai LA, Lobo FA, Prezioso C, Creteur J, Payen JF, Taccone FS. Evaluation of Nociception Using Quantitative Pupillometry and Skin Conductance in Critically Ill Unconscious Patients: A Pilot Study. Brain Sci 2021; 11:brainsci11010109. [PMID: 33467451 PMCID: PMC7829933 DOI: 10.3390/brainsci11010109] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/09/2021] [Accepted: 01/13/2021] [Indexed: 11/25/2022] Open
Abstract
Background: Pain assessment is a challenge in critically ill patients, in particular those who are unable to express movements in reaction to noxious stimuli. The purpose of the study was to compare the pupillary response and skin conductance to pain stimulation in critically ill unconscious patients. Methods: This observational study included adult patients admitted to the intensive care unit (ICU) with acute brain injury (Glasgow Coma Scale < 9 with a motor response < 5) and/or requirements for deep level of sedation. Automated pupillometry (Algiscan, ID-MED, Marseille, France) was used to determine pupillary reflex dilation during tetanic stimulation. The maximum intensity of the stimulation value allowed the determination of a pupillary pain index score ranging from 1 (no nociception) to 9 (high nociception): a pupillary pain index (PPI) score of ≤4 was used to reflect adequate pain control. For skin conductance (SC), the number of SC peaks per second (NSCF) was collected concomitantly to tetanic stimulation. An NSCF of ≤0.07 peak/second was used to reflect adequate pain control. Results: Of the 51 included patients, there were 32 with brain injury and 19 receiving deep sedation. Mean PPI score was 5 (Interquartile Range= 2–7); a total of 28 (55%) patients showed inadequate control of the nociceptive stimulation according to the PPI assessment. Only 15 (29%) patients showed a detectable skin conductance, with NSCF values from 0.07 to 0.47/s. No correlation was found between skin conductance algesimeter (SCA)-derived variables and PPI score or pupillary dilation to pain. Conclusions: Detection of inadequate pain control might vary according to the method used to assess nociception in ICU patients. A poor agreement between quantitative pupillometry and skin conductance was observed.
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Affiliation(s)
- Sara Fratino
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
| | - Lorenzo Peluso
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
- Correspondence:
| | - Marta Talamonti
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
| | - Marco Menozzi
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
| | - Lucas Akira Costa Hirai
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
| | - Francisco A Lobo
- Department of Anesthesiology, CHTMAD-Hospital de S. Pedro, 5000 Vila Real, Portugal;
| | - Chiara Prezioso
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
| | - Jacques Creteur
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
| | - Jean-François Payen
- Department of Anesthesia and Critical Care CHU Grenoble Alpes, University Grenoble Alpes, 38000 Grenoble, France;
| | - Fabio Silvio Taccone
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium; (S.F.); (M.T.); (M.M.); (L.A.C.H.); (C.P.); (J.C.); (F.S.T.)
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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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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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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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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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Funcke S, Pinnschmidt HO, Wesseler S, Brinkmann C, Beyer B, Jazbutyte V, Behem CR, Trepte C, Nitzschke R. Guiding Opioid Administration by 3 Different Analgesia Nociception Monitoring Indices During General Anesthesia Alters Intraoperative Sufentanil Consumption and Stress Hormone Release. Anesth Analg 2020; 130:1264-1273. [DOI: 10.1213/ane.0000000000004388] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Miroz JP, Ben-Hamouda N, Bernini A, Romagnosi F, Bongiovanni F, Roumy A, Kirsch M, Liaudet L, Eckert P, Oddo M. Neurological Pupil index for Early Prognostication After Venoarterial Extracorporeal Membrane Oxygenation. Chest 2019; 157:1167-1174. [PMID: 31870911 DOI: 10.1016/j.chest.2019.11.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/19/2019] [Accepted: 11/30/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Venoarterial extracorporeal membrane oxygenation therapy (VA-ECMO) after refractory cardiogenic shock or cardiac arrest has significant morbidity and mortality. Early outcome prediction is crucial in this setting, but data on neuroprognostication are limited. We examined the prognostic value of clinical neurologic examination, using an automated device for the quantitative measurement of pupillary light reactivity. METHODS An observational cohort of sedated, mechanically ventilated VA-ECMO patients was analyzed during the early phase after ECMO insertion (first 72 h). Using the NPi-200 automated infrared pupillometer, pupillary light reactivity was assessed repeatedly (every 12 h) by calculating the Neurological Pupil index (NPi). Trends of NPi over time were correlated to 90-day mortality, and the prognostic performance of the NPi, alone and in combination with the 12-h PREDICT VA-ECMO score, was evaluated. RESULTS One hundred consecutive patients were studied (51 with refractory cardiogenic shock and 49 with refractory cardiac arrest; 12-h PREDICT VA-ECMO, 40%; observed 90-day survival, 43%). Nonsurvivors (n = 57) had significantly lower NPi than did survivors at all time points (all P < .01). Abnormal NPi (< 3, at any time from 24 to 72 h) was 100% specific for 90-day mortality, with 0% false positives. Adding the 12-h PREDICT VA-ECMO score to the NPi provided the best prognostic performance (specificity, 100% [95% CI, 92%-100%]; sensitivity, 60% [95% CI, 46%-72%]; area under the receiver operating characteristic curve, 0.82). CONCLUSIONS Quantitative NPi alone had excellent ability to predict a poor outcome from day 1 after VA-ECMO insertion, with no false positives. Combining NPi and 12-h PREDICT-VA ECMO score increased the sensitivity of outcome prediction, while maintaining 100% specificity.
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Affiliation(s)
- John-Paul Miroz
- Department of Adult Intensive Care Medicine, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland; Neuroscience Critical Care Research Group, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Nawfel Ben-Hamouda
- Department of Adult Intensive Care Medicine, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Adriano Bernini
- Neuroscience Critical Care Research Group, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Federico Romagnosi
- Neuroscience Critical Care Research Group, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Filippo Bongiovanni
- Neuroscience Critical Care Research Group, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Aurélien Roumy
- Department of Heart and Vessels, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Matthias Kirsch
- Department of Heart and Vessels, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Lucas Liaudet
- Department of Adult Intensive Care Medicine, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Philippe Eckert
- Department of Adult Intensive Care Medicine, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland
| | - Mauro Oddo
- Department of Adult Intensive Care Medicine, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland; Neuroscience Critical Care Research Group, Lausanne University Hospital (CHUV) and the University of Lausanne, Lausanne, Switzerland.
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Abstract
PURPOSE OF REVIEW In an unconscious patient, there can be significant challenges to monitoring nociception and proper dosing of analgesic medications. The traditional measures of intraoperative nociception have poor sensitivity and specificity with little predictive value in postoperative outcomes such as postoperative pain, opioid-induced side effects, length of stay or incidence of opioid use disorder. To date, several monitoring modalities are in development to establish objective measures of the balance between nociception and analgesia with the goal of guiding anesthesiologists and improve patient outcomes. In this review, some of the most promising monitoring modalities are discussed with the most recent findings. RECENT FINDINGS Multiple modalities are beginning to demonstrate utility compared with traditional care. Most, but not all, of these studies show decreased intraoperative opioid use and some show lower pain scores and opioid requirements in the postanesthesia care unit. SUMMARY Recent evidence points to promising efficacy for these monitoring modalities; however, this field is in its infancy. More investigation is required to demonstrate differences in outcome compared with traditional care, and these differences need to be of sufficient import to achieve widespread adoption.
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Ladebo L, Foster DJR, Abuhelwa AY, Upton RN, Kongstad KT, Drewes AM, Christrup LL, Olesen AE. Population pharmacokinetic‐pharmacodynamic modelling of liquid and controlled‐release formulations of oxycodone in healthy volunteers. Basic Clin Pharmacol Toxicol 2019; 126:263-276. [DOI: 10.1111/bcpt.13330] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/23/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Louise Ladebo
- Mech‐Sense Department of Gastroenterology and Hepatology Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - David J. R. Foster
- Australian Centre for Pharmacometrics School of Pharmacy and Medical Sciences University of South Australia Adelaide Australia
| | - Ahmad Y. Abuhelwa
- Australian Centre for Pharmacometrics School of Pharmacy and Medical Sciences University of South Australia Adelaide Australia
| | - Richard N. Upton
- Australian Centre for Pharmacometrics School of Pharmacy and Medical Sciences University of South Australia Adelaide Australia
| | - Kenneth T. Kongstad
- Department of Drug Design and Pharmacology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Asbjørn M. Drewes
- Mech‐Sense Department of Gastroenterology and Hepatology Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - Lona L. Christrup
- Department of Drug Design and Pharmacology Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Anne E. Olesen
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Department of Clinical Pharmacology Aalborg University Hospital Aalborg Denmark
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Sabourdin N, Meniolle F, Chemam S, Rigouzzo A, Hamza J, Louvet N, Constant I. Effect of Different Concentrations of Propofol Used as a Sole Anesthetic on Pupillary Diameter: A Randomized Trial. Anesth Analg 2019; 131:510-517. [DOI: 10.1213/ane.0000000000004362] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ghanty I, Schraag S. The quantification and monitoring of intraoperative nociception levels in thoracic surgery: a review. J Thorac Dis 2019; 11:4059-4071. [PMID: 31656682 DOI: 10.21037/jtd.2019.08.62] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nociception is the unconscious perception of a stimulus applied by trauma or surgery and expressed through a response of the autonomous nervous system. Local anaesthetics (LAs), opioids and other modulating agents such as ketamine are usually utilised to blunt nociception as a component during general anaesthesia (GA) and surgery. The effectiveness of these measures, however, are still difficult to quantify and monitoring of anti-nociception has been confined to assess variation of heart rate (HR) or blood pressure (BP). Recently, various monitoring concepts have been introduced to quantify nociception more systematically and on the other hand guide anti-nociceptive interventions more appropriately. This review describes the various technologies, their performance in clinical studies and provides a critical appraisal with particular application to thoracic anaesthesia and surgery and their relevance in the context of chronic pain after surgery.
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Affiliation(s)
- Ismael Ghanty
- Department of Perioperative Medicine, Golden Jubilee National Hospital, Clydebank, UK
| | - Stefan Schraag
- Department of Perioperative Medicine, Golden Jubilee National Hospital, Clydebank, UK
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Morelli P, Oddo M, Ben-Hamouda N. Role of automated pupillometry in critically ill patients. Minerva Anestesiol 2019; 85:995-1002. [DOI: 10.23736/s0375-9393.19.13437-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Martin E, Narjoz C, Decleves X, Labat L, Lambert C, Loriot MA, Ducheix G, Dualé C, Pereira B, Pickering G. Dextromethorphan Analgesia in a Human Experimental Model of Hyperalgesia. Anesthesiology 2019; 131:356-368. [DOI: 10.1097/aln.0000000000002736] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract
Editor’s Perspective
What We Already Know about This Topic
What This Article Tells Us That Is New
Background
Central pain sensitization is often refractory to drug treatment. Dextromethorphan, an N-methyl-d-aspartate receptor antagonist, is antihyperalgesic in preclinical pain models. The hypothesis is that dextromethorphan is also antihyperalgesic in humans.
Methods
This randomized, double-blind, placebo-controlled, crossover study explores the antihyperalgesic effect of single and repeated 30-mg dose of oral dextromethorphan in 20 volunteers, using the freeze-injury pain model. This model leads to development of primary and secondary hyperalgesia, which develops away from the site of injury and is associated with central sensitization and activation of N-methyl-d-aspartate receptor in the spinal cord. The primary outcome was antihyperalgesia calculated with the area under the curve of the percentage change in mechanical pain threshold (electronic von Frey) on the area of secondary hyperalgesia. The secondary outcomes were mechanical pain threshold on the area of primary hyperalgesia and cognitive (reaction time) effect.
Results
Single 30-mg results are reported. Antihyperalgesia (% · min) is significantly higher on the area of secondary hyperalgesia with dextromethorphan than placebo (median [interquartile range]: 3,029 [746; 6,195] vs. 710 [–3,248; 4,439], P = 0.009, Hedge’s g = 0.8, 95% CI [0.1; 1.4]). On primary hyperalgesia area, mechanical pain threshold 2 h after drug intake is significantly higher with dextromethorphan (P = 0.011, Hedge’s g = 0.63, 95% CI [0.01; 1.25]). No difference in antinociception is observed after thermal painful stimuli on healthy skin between groups. Reaction time (ms) is shorter with placebo than with dextromethorphan (median [interquartile range]: 21.6 [–37.4; 0.1] vs. –1.2 [–24.3; 15.4], P = 0.015, Hedge’s g = 0.75, 95% CI [0.12; 1.39]). Nonserious adverse events occurrence (15%, 3 of 20 volunteers) was similar in both groups.
Conclusions
This study shows that low-dose (30-mg) dextromethorphan is antihyperalgesic in humans on the areas of primary and secondary hyperalgesia and reverses peripheral and central neuronal sensitization. Because dextromethorphan had no intrinsic antinociceptive effect in acute pain on healthy skin, N-methyl-d-aspartate receptor may need to be sensitized by pain for dextromethorphan to be effective.
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Affiliation(s)
- E. Martin
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - C. Narjoz
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - X. Decleves
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - L. Labat
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - C. Lambert
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - M.-A. Loriot
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - G. Ducheix
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - C. Dualé
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - B. Pereira
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
| | - G. Pickering
- From University Clermont Auvergne, Department of Fundamental and Clinical Pharmacology of Pain, NeuroDol, F-63000 Clermont-Ferrand, France (E.M., C.D., G.P.); Inserm UMR-S1147, Saints-Pères University Centre, Paris, France (C.N., M.-A.L.); University Paris Descartes, Sorbonne Paris Cité, Paris, France (C.N., M.-A.L.); Assistance Publique—Paris Hospital (AP-HP), Georges Pompidou European Hospital,
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Montana MC, Juriga L, Sharma A, Kharasch ED. Opioid Sensitivity in Children with and without Obstructive Sleep Apnea. Anesthesiology 2019; 130:936-945. [DOI: 10.1097/aln.0000000000002664] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract
Editor’s Perspective
What We Already Know about This Topic
What This Article Tells Us That Is New
Background
Opioids are a mainstay of perioperative analgesia. Opioid use in children with obstructive sleep apnea is challenging because of assumptions for increased opioid sensitivity and assumed risk for opioid-induced respiratory depression compared to children without obstructive sleep apnea. These assumptions have not been rigorously tested. This investigation tested the hypothesis that children with obstructive sleep apnea have an increased pharmacodynamic sensitivity to the miotic and respiratory depressant effects of the prototypic μ-opioid agonist remifentanil.
Methods
Children (8 to 14 yr) with or without obstructive sleep apnea were administered a 15-min, fixed-rate remifentanil infusion (0.05, 0.1, or 0.15 μg · kg-1 · min-1). Each dose group had five patients with and five without obstructive sleep apnea. Plasma remifentanil concentrations were measured by tandem liquid chromatography mass spectrometry. Remifentanil effects were measured via miosis, respiratory rate, and end-expired carbon dioxide. Remifentanil pharmacodynamics (miosis vs. plasma concentration) were compared in children with or without obstructive sleep apnea.
Results
Remifentanil administration resulted in miosis in both non-obstructive sleep apnea and obstructive sleep apnea patients. No differences in the relationship between remifentanil concentration and miosis were seen between the two groups at any of the doses administered. The administered dose of remifentanil did not affect respiratory rate or end-expired carbon dioxide in either group.
Conclusions
No differences in the remifentanil concentration–miosis relation were seen in children with or without obstructive sleep apnea. The dose and duration of remifentanil administered did not alter ventilatory parameters in either group.
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Affiliation(s)
- Michael C. Montana
- From the Department of Anesthesiology, Washington University in St. Louis, School of Medicine, St. Louis, Missouri (M.C.M., L.J., A.S., E.D.K.); and the Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina (E.D.K.)
| | - Lindsay Juriga
- From the Department of Anesthesiology, Washington University in St. Louis, School of Medicine, St. Louis, Missouri (M.C.M., L.J., A.S., E.D.K.); and the Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina (E.D.K.)
| | - Anshuman Sharma
- From the Department of Anesthesiology, Washington University in St. Louis, School of Medicine, St. Louis, Missouri (M.C.M., L.J., A.S., E.D.K.); and the Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina (E.D.K.)
| | - Evan D. Kharasch
- From the Department of Anesthesiology, Washington University in St. Louis, School of Medicine, St. Louis, Missouri (M.C.M., L.J., A.S., E.D.K.); and the Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina (E.D.K.)
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Sabourdin N, Diarra C, Wolk R, Piat V, Louvet N, Constant I. Pupillary Pain Index Changes After a Standardized Bolus of Alfentanil Under Sevoflurane Anesthesia. Anesth Analg 2019; 128:467-474. [DOI: 10.1213/ane.0000000000003681] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Charier D, Vogler MC, Zantour D, Pichot V, Martins-Baltar A, Courbon M, Roche F, Vassal F, Molliex S. Assessing pain in the postoperative period: Analgesia Nociception Index TMversus pupillometry. Br J Anaesth 2019; 123:e322-e327. [PMID: 30915996 DOI: 10.1016/j.bja.2018.09.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 08/29/2018] [Accepted: 09/24/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Potential methods for objective assessment of postoperative pain include the Analgesia Nociception Index™ (ANI), a real-time index of the parasympathetic tone, the pupillary light reflex (PLR), and the variation coefficient of pupillary diameter (VCPD), a measure of pupillary diameter (PD) fluctuations. Until now, the literature is divided as to their respective accuracy magnitudes for assessing a patient's pain. The VCPD has been demonstrated to strongly correlate with pain in an obstetrical population. However, the pain induced by obstetrical labour is different, given its intermittent nature, than the pain observed during the postoperative period. The aim of the current study was to compare the respective values of these variables at VAS scores ≥4. METHODS After approval by the Ethics Committee, 345 patients aged on average 50 (SD 17) yr (range: 18-91 yr) of age were included. The protocols of general anaesthesia and postoperative analgesia were left to the anaesthetist's discretion. Some 40 min after tracheal intubation, VAS, ANI, PD, PLR, and VCPD values were recorded. RESULTS VCPD correlates more strongly (r=0.78) with pain as assessed with the VAS than ANI (r=-0.15). PD and PLR are not statistically correlated with VAS. The ability of VCPD to assess the pain of patients (VAS≥4) is strong [area under the curve (AUC): 0.92, confidence interval (CI): 0.89-0.95], and better than for ANI (AUC: 0.39, CI: 0.33-0.45). CONCLUSIONS Our study suggests that VCPD could be a useful tool for monitoring pain in conscious patients during the postoperative period. CLINICAL TRIAL REGISTRATION NCT03267979.
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Affiliation(s)
- David Charier
- Department of Anesthesia and Intensive Care Medicine, University Hospital, Saint-Etienne, France; Research Team EA 4607, SNA-EPIS, Jean Monnet University, Saint-Etienne, France.
| | - Marie-Charlotte Vogler
- Department of Anesthesia and Intensive Care Medicine, University Hospital, Saint-Etienne, France
| | - Daniel Zantour
- Department of Anesthesia and Intensive Care Medicine, University Hospital, Saint-Etienne, France
| | - Vincent Pichot
- Clinical Physiology and Exercise Department, University Hospital, Saint-Etienne, France; Research Team EA 4607, SNA-EPIS, Jean Monnet University, Saint-Etienne, France
| | | | - Marjolaine Courbon
- Jacques Lisfranc Faculty of Medicine, Jean Monnet University, Saint-Etienne, France
| | - Frédéric Roche
- Clinical Physiology and Exercise Department, University Hospital, Saint-Etienne, France; Research Team EA 4607, SNA-EPIS, Jean Monnet University, Saint-Etienne, France
| | - François Vassal
- Neurosurgery, University Hospital, Saint-Etienne, France; INSERM U1028, Central Integration of Pain Lab, Jean Monnet University, Saint-Etienne, France
| | - Serge Molliex
- Department of Anesthesia and Intensive Care Medicine, University Hospital, Saint-Etienne, France; Research Team EA 4607, SNA-EPIS, Jean Monnet University, Saint-Etienne, France
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Fernandez A, Kirsch I, Noël L, Rodondi PY, Kaptchuk TJ, Suter MR, Décosterd I, Berna C. A test of positive suggestions about side effects as a way of enhancing the analgesic response to NSAIDs. PLoS One 2019; 14:e0209851. [PMID: 30605458 PMCID: PMC6317829 DOI: 10.1371/journal.pone.0209851] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/12/2018] [Indexed: 12/12/2022] Open
Abstract
Side effects are frequent in pharmacological pain management, potentially preceding analgesia and limiting drug tolerability. Discussing side effects is part of informed consent, yet can favor nocebo effects. This study aimed to test whether a positive suggestion regarding side effects, which could act as reminders of the medication having been absorbed, might favor analgesia in a clinical interaction model. Sixty-six healthy males participated in a study "to validate pupillometry as an objective measure of analgesia". Participants were unknowingly randomized double-blind to positive vs control information about side effects embedded in a video regarding the study drugs. Sequences of moderately painful heat stimuli applied before and after treatment with diclofenac and atropine served to evaluate analgesia. Atropine was deceptively presented as a co-analgesic, but used to induce side effects. Adverse events (AE) were collected with the General Assessment of Side Effects (GASE) questionnaire prior to the second induced pain sequence. Debriefing fully informed participants regarding the purpose of the study and showed them the two videos.The combination of medication led to significant analgesia, without a between-group difference. Positive information about side effects increased the attribution of AE to the treatment compared to the control information. The total GASE score was correlated with analgesia, i.e., the more AEs reported, the stronger the analgesia. Interestingly, there was a significant between-groups difference on this correlation: the GASE score and analgesia correlated only in the positive information group. This provides evidence for a selective link between AEs and pain relief in the group who received the suggestion that AEs could be taken as a sign "that help was on the way". During debriefing, 65% of participants said they would prefer to receive the positive message in a clinical context. Although the present results cannot be translated immediately to clinical pain conditions, they do indicate the importance of testing this type of modulation in a clinical context.
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Affiliation(s)
- Aurore Fernandez
- Pain Center, Department of Anesthesiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Irving Kirsch
- Program in Placebo Studies, Harvard Medical School, Boston, MA, United States of America
| | - Louis Noël
- Pain Center, Department of Anesthesiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Pierre Yves Rodondi
- Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland
- Institute of Social and Preventive Medicine (IUMSP), Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Ted J. Kaptchuk
- Program in Placebo Studies, Harvard Medical School, Boston, MA, United States of America
| | - Marc R. Suter
- Pain Center, Department of Anesthesiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Isabelle Décosterd
- Pain Center, Department of Anesthesiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Chantal Berna
- Pain Center, Department of Anesthesiology, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland
- Program in Placebo Studies, Harvard Medical School, Boston, MA, United States of America
- * E-mail:
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Defresne A, Harrison M, Clement F, Barvais L, Bonhomme V. Two different methods to assess sympathetic tone during general anesthesia lead to different findings. J Clin Monit Comput 2018; 33:463-469. [PMID: 29943169 DOI: 10.1007/s10877-018-0175-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/20/2018] [Indexed: 12/19/2022]
Abstract
Noxious stimulation influences the autonomic nervous system activity. Sympathetic tone monitoring is currently used to assess the adequacy of the balance between nociception and anti-nociception during general anesthesia. The Surgical Plethysmographic Index (SPI) and the EBMi software (Custos©) are commercial devices that use different algorithms to measure it. We aimed at determining whether those devices provide similar information during routine surgical procedures under general anesthesia. Data acquired during a previously published study in patients undergoing surgery under general anesthesia were retrospectively analyzed and passed through the EBMi software. The occurrence of EBMi alarms of increased sympathetic tone was compared to the occurrence of SPI values ≥ 60, a commonly recommended intraoperative SPI threshold. Trends in classical parameters of sympathetic tone during the 5 min preceding a SPI ≥ 60, namely blood pressure, heart rate, and plethysmographic pulse amplitude were assessed. SPI ≥ 60 episodes (n = 307) were more frequent than EBMi alerts (n = 240). Approximately 70% of EBMi alerts occurred during periods where the SPI was below 60. Among all episodes of SPI ≥ 60, absence of any EBMi alerts was much more frequent than the inverse. A majority, but not all SPI ≥ 60 episodes were consistently preceded by an increase in heart rate and/or a decrease in pulse amplitude. Blood pressure did not significantly change before SPI ≥ 60. Longer SPI ≥ 60 episodes were associated with lower anti-nociception anesthetic regimen. Different methods of sympathetic tone assessment during general anesthesia provide conflicting information. Prospective studies should be undertaken to clarify the clinical indications of both techniques.
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Affiliation(s)
- Aline Defresne
- GIGA - Consciousness, Anesthesia and Intensive Care Medicine Laboratory, University and CHU University Hospital of Liege, Liege, Belgium.,Department of Anaesthesia and Intensive Care Medicine, CHU University Hospital of Liege, Liege, Belgium.,University Department of Anaesthesia and Intensive Care Medicine, CHR Citadelle, Bd du 12eme de Ligne, 1, Liege, 4000, Belgium
| | - Michael Harrison
- Department of Surgery and Anaesthesia, University of Otago, Wellington, New Zealand
| | - François Clement
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Luc Barvais
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Vincent Bonhomme
- GIGA - Consciousness, Anesthesia and Intensive Care Medicine Laboratory, University and CHU University Hospital of Liege, Liege, Belgium. .,Department of Anaesthesia and Intensive Care Medicine, CHU University Hospital of Liege, Liege, Belgium. .,University Department of Anaesthesia and Intensive Care Medicine, CHR Citadelle, Bd du 12eme de Ligne, 1, Liege, 4000, Belgium.
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43
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Charier DJ, Molliex SB. Reply to "A New Pupillary Measure to Assess Pain: A Prospective Study". THE JOURNAL OF PAIN 2018; 19:570. [PMID: 29706355 DOI: 10.1016/j.jpain.2017.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- David J Charier
- Department of Anesthesia and Intensive Care Medicine, University Hospital and Jean Monnet University, Saint-Etienne, France.
| | - Serge B Molliex
- Department of Anesthesia and Intensive Care Medicine, University Hospital and Jean Monnet University, Saint-Etienne, France
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Wildemeersch D, Peeters N, Saldien V, Vercauteren M, Hans G. Pain assessment by pupil dilation reflex in response to noxious stimulation in anaesthetized adults. Acta Anaesthesiol Scand 2018; 62:1050-1056. [PMID: 29671874 PMCID: PMC6099429 DOI: 10.1111/aas.13129] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 03/05/2018] [Accepted: 03/08/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND In response to noxious stimulation, pupillary dilation reflex (PDR) occurs even in anaesthetized patients. The aim of the study was to evaluate the ability of pupillometry with an automated increasing stimulus intensity to monitor intraoperative opioid administration. METHODS Thirty-four patients undergoing elective surgery were enrolled. Induction by propofol anaesthesia was increased progressively until the sedation depth criteria (SeD) were attained. Subsequently, a first dynamic pupil measurement was performed by applying standardized nociceptive stimulation (SNS). A second PDR evaluation was performed when remifentanil reached a target effect-site concentration. Automated infrared pupillometry was used to determine PDR during nociceptive stimulations generating a unique pupillary pain index (PPI). Vital signs were measured. RESULTS After opioid administration, anaesthetized patients required a higher stimulation intensity (57.43 mA vs 32.29 mA, P < .0005). Pupil variation in response to the nociceptive stimulations was significantly reduced after opioid administration (8 mm vs 28 mm, P < .0005). The PPI score decreased after analgesic treatment (8 vs 2, P < .0005), corresponding to a 30% decrease. The elicitation of PDR by nociceptive stimulation was performed without changes in vital signs before (HR 76 vs 74/min, P = .09; SBP 123 vs 113 mm Hg, P = .001) and after opioid administration (HR 63 vs 62/min, P = .4; SBP 98.66 vs 93.77 mm Hg, P = .032). CONCLUSIONS During propofol anaesthesia, pupillometry with the possibility of low-intensity standardized noxious stimulation via PPI protocol can be used for PDR assessment in response to remifentanil administration.
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Affiliation(s)
- D. Wildemeersch
- Department of AnaesthesiaAntwerp University Hospital (UZA)EdegemBelgium
- Multidisciplinary Pain CentreAntwerp University Hospital (UZA)EdegemBelgium
- Laboratory for Pain ResearchUniversity of Antwerp (UA)WilrijkBelgium
| | - N. Peeters
- Department of AnaesthesiaAntwerp University Hospital (UZA)EdegemBelgium
| | - V. Saldien
- Department of AnaesthesiaAntwerp University Hospital (UZA)EdegemBelgium
| | - M. Vercauteren
- Multidisciplinary Pain CentreAntwerp University Hospital (UZA)EdegemBelgium
- Laboratory for Pain ResearchUniversity of Antwerp (UA)WilrijkBelgium
| | - G. Hans
- Department of AnaesthesiaAntwerp University Hospital (UZA)EdegemBelgium
- Multidisciplinary Pain CentreAntwerp University Hospital (UZA)EdegemBelgium
- Laboratory for Pain ResearchUniversity of Antwerp (UA)WilrijkBelgium
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Wildemeersch D, Baeten M, Peeters N, Saldien V, Vercauteren M, Hans G. Pupillary dilation reflex and pupillary pain index evaluation during general anaesthesia: a pilot study. Rom J Anaesth Intensive Care 2018; 25:19-23. [PMID: 29756058 DOI: 10.21454/rjaic.7518.251.wil] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Background Pupillary response by pupillary dilatation reflex (PDR) is a robust reflex, even measurable during general anaesthesia. However, the ability of infrared pupillometry to detect PDR differences obtained by intraoperative opioid administration in anaesthesized patients remains largely unknown. We analyzed the performance of automated infrared pupillometry in detecting differences in pupillary dilatation reflex response by a inbuilt standardized nociceptive stimulation program in patients under general anesthesia with a standardized propofol/fentanyl scheme. Methods In this single center, interventional cohort study 38 patients (24-74 years) were enrolled. Patients were anesthetized with propofol until loss of consciousness. Two dynamic pupil measurements were performed in each patient (before opioid administration and after opioid steady state). Automated infrared pupillometry was used to determine PDR during nociceptive stimulations (10-60 mA) applied by a inbuilt pupillary pain index protocol (PPI) to the skin area innervated by the median nerve. Increasing stimulations by protocol are device specific and automatically performed until pupil dilation of > 13%. Pupil characteristics, blood pressure, heart rate values were collected. Results After opioid administration, patients needed a higher stimulation intensity (45.26 mA vs 30.79 mA, p = 0.00001). PPI score showed a reduction after analgesic treatment (5.21 vs 7.68, p = 0.000001), resulting in a 32.16% score reduction. Conclusions PDR via automated increased tetanic stimulation may reflect opioid effect under general anaesthesia. Further research is required to detect possible confounding factors such as medication interaction and optimization of individualized opioid dosage.
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Affiliation(s)
- Davina Wildemeersch
- Department of Anaesthesiology, Antwerp University Hospital, Edegem, Belgium.,Multidisciplinary Pain Centre, Antwerp University Hospital, Edegem, Belgium.,Pain Research Laboratory, University of Antwerp, Edegem, Belgium
| | - Michiel Baeten
- Department of Anaesthesiology, Antwerp University Hospital, Edegem, Belgium
| | - Natasja Peeters
- Department of Anaesthesiology, Antwerp University Hospital, Edegem, Belgium
| | - Vera Saldien
- Department of Anaesthesiology, Antwerp University Hospital, Edegem, Belgium
| | - Marcel Vercauteren
- Multidisciplinary Pain Centre, Antwerp University Hospital, Edegem, Belgium.,Pain Research Laboratory, University of Antwerp, Edegem, Belgium
| | - Guy Hans
- Department of Anaesthesiology, Antwerp University Hospital, Edegem, Belgium.,Multidisciplinary Pain Centre, Antwerp University Hospital, Edegem, Belgium.,Pain Research Laboratory, University of Antwerp, Edegem, Belgium
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Standardised noxious stimulation-guided individual adjustment of remifentanil target-controlled infusion to prevent haemodynamic responses to laryngoscopy and surgical incision. Eur J Anaesthesiol 2018; 35:173-183. [DOI: 10.1097/eja.0000000000000742] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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47
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Duceau B, Jayr C. In Response. Anesth Analg 2018; 126:1791. [PMID: 29481432 DOI: 10.1213/ane.0000000000002874] [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]
Affiliation(s)
- Baptiste Duceau
- Institut Curie, Department of Anesthesiology, Hôpital René Huguenin, Saint-Cloud, France,
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48
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Sabourdin N, Peretout JB, Khalil E, Guye ML, Louvet N, Constant I. Influence of Depth of Hypnosis on Pupillary Reactivity to a Standardized Tetanic Stimulus in Patients Under Propofol-Remifentanil Target-Controlled Infusion: A Crossover Randomized Pilot Study. Anesth Analg 2018; 126:70-77. [PMID: 28107273 DOI: 10.1213/ane.0000000000001802] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Pupillometry allows the measurement of pupillary diameter variations in response to nociceptive stimuli. This technique has been used to monitor the balance between analgesia and nociception. Under general anesthesia, the amplitude of pupillary dilation is related to the amount of administered opioids. The objective of this study was to determine whether at a constant infusion rate of opioids, the pupillary response was influenced by depth of hypnosis assessed by the bispectral index (BIS). METHODS Twelve patients (14-20 years) anesthetized for orthopedic surgery were included. Under propofol-remifentanil target-controlled infusion, remifentanil effect site target concentration was fixed at 1 ng/mL. Two measures of pupillary reflex dilation were performed on each patient in a randomized order: one at BIS 55 and one at BIS 25. These levels of BIS were obtained by adjusting propofol target concentration and maintained for 10 minutes before each measure. For each measure, we applied a standardized tetanic stimulation on the patient's forearm (60 mA, 100 Hz, 5 seconds). All measures were performed before the beginning of surgery. RESULTS Pupillary dilation was significantly greater at BIS 55 than at BIS 25: 32.1% ± 5.3% vs 10.4% ± 2.5% (mean difference estimate [95% confidence interval]: 21.8% [12.9-30.6], P < .001), without carryover effect (P = .30) nor period effect (P = .52). Hemodynamic parameters and BIS were not modified by the stimulation. CONCLUSIONS In patients receiving a constant infusion of remifentanil at a target concentration of 1 ng/mL, pupillary dilation after a standardized tetanic stimulation was influenced by depth of hypnosis assessed by the BIS.
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Affiliation(s)
- Nada Sabourdin
- From the Département d'anesthésiologie, Hôpital Armand Trousseau, Paris, France
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49
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Avez-Couturier J, Joriot S, Peudenier S, Juzeau D. [Pain in children with neurological impairment: A review from the French Pediatric Neurology Society]. Arch Pediatr 2017; 25:55-62. [PMID: 29273448 DOI: 10.1016/j.arcped.2017.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 08/03/2017] [Accepted: 11/04/2017] [Indexed: 12/01/2022]
Abstract
Management of pain is one of the major expectations of children with neurological impairment and their families. The medical literature is poor on this topic accounting for approximately 0.15 % of the publications on pain in general. The objective of the French Pediatric Neurology Society was to review the current knowledge on this topic. Bibliographic research was conducted with PubMed and RefDoc for publications between 1994 and 2014 in French or English. A total of 925 articles were retrieved and 92 were selected for review. Pain is common in this population: a 2-week survey indicated that pain occurs in 50-75 % of children. Pain negatively impacts the quality of life of children and their parents. Children with neurological impairment express their pain with pain expression patterns and specific patterns common to children (change of tone, abnormal movements, spasticity, paradoxical reactions, such as laughter, self-injury or vasomotor dysfunction). Some children with neurological impairment are able to use self-report pain scales. If not, observational measures should be used. Behavioral rating scales specifically designed for this population are more sensitive than others. Scales must be selected according to children's communication skills, type of pain, and the context. Sometimes behavioral changes are the only expression of pain: any change in sleep, tone, feeding, or mood must suggest pain in this population. Management of pain remains difficult. There are no specific guidelines. Procedural pain management guidelines and the usual analgesic drugs can be used in children with neurological impairment with specific concerns regarding tolerance and side effects. These children are particularly at risk for neuropathic pain. A multidisciplinary approach is helpful, involving physicians, nurses, physiotherapists, psychologists and parents.
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Affiliation(s)
- J Avez-Couturier
- Service de neuropédiatrie, CHU de Lille, rue du Pr-Émile-Laine, 59000 Lille, France; Consultation douleur enfant, CHU de Lille, rue du Pr-Émile Laine, 59000 Lille, France; CIC-IT 1403, Maison régionale de la recherche clinique, hôpital universitaire de Lille, CHU de Lille, 6, rue du Professeur-Laguesse, 59000 Lille, France.
| | - S Joriot
- Service de neuropédiatrie, CHU de Lille, rue du Pr-Émile-Laine, 59000 Lille, France
| | - S Peudenier
- Service de pédiatrie, hôpital Morvan, CHRU de Brest, 2, avenue Foch, 29609 Brest cedex, France
| | - D Juzeau
- Réseau neurodev, bâtiment Paul-Boulanger, 1, boulevard du Pr.-Jules-Leclercq, 59000 Lille, France
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50
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Pupillary reflex dilation in response to incremental nociceptive stimuli in patients receiving intravenous ketamine. J Clin Monit Comput 2017; 32:921-928. [PMID: 29043601 DOI: 10.1007/s10877-017-0072-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 10/06/2017] [Indexed: 10/18/2022]
Abstract
Pupillometry is a non-invasive monitoring technique, which allows dynamic pupillary diameter measurement by an infrared camera. Pupillary diameter increases in response to nociceptive stimuli. In patients anesthetized with propofol or volatile agents, the magnitude of this pupillary dilation is related to the intensity of the stimulus. Pupillary response to nociceptive stimuli has never been studied under ketamine anesthesia. Our objective was to describe pupillary reflex dilation after calibrated tetanic stimulations in patients receiving intravenous ketamine. After written consent, 24 patients of our pediatric burn care unit were included. They received an oral morphine premedication (0.3 mg kg-1) 1 h before their scheduled daily dressing change. Just before the procedure, they received 1 mg kg-1 of intravenous ketamine. Two minutes after this bolus, tetanic stimulations of incremental intensities were performed on the arm of each patient (5-10-20-30-40-60 mA, 60 s interval between stimulations). Pupillary diameter, heart rate and movements were recorded before and after each stimulation. Tetanic stimulations were associated with changes in pupillary diameter and heart rate. The magnitude of these changes was significantly influenced by the intensity of stimulation (ANOVA for repeated measures, p < 0.001). Movement was associated with a 32% increase in diameter (ROC curves, AUC 0.758) with 65% sensitivity and 77% specificity. In children, pupillary reflex dilation to nociceptive stimuli persists under deep sedation obtained with 1 mg kg-1 of intravenous ketamine combined with a 0.3 mg kg-1 oral morphine premedication, and its magnitude depends on the intensity of the stimulation. Our results confirm that pupillometry could be a relevant way to monitor nociception in anaesthetised subjects, including those receiving ketamine. Trial registration clinicaltrials.gov, NCT 02648412.
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