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Oh SK, Won YJ, Lim BG. Surgical pleth index monitoring in perioperative pain management: usefulness and limitations. Korean J Anesthesiol 2024; 77:31-45. [PMID: 36926752 PMCID: PMC10834712 DOI: 10.4097/kja.23158] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/16/2023] [Accepted: 03/16/2023] [Indexed: 03/18/2023] Open
Abstract
Surgical pleth index (SPI) monitoring is a representative, objective nociception-monitoring device that measures nociception using photoplethysmographic signals. It is easy to apply to patients and the numerical calculation formula is intuitively easy to understand; therefore, its clinical interpretation is simple. Several studies have demonstrated its efficacy and utility. Compared with hemodynamic parameters, the SPI can detect the degree of nociception during surgery under general anesthesia with greater accuracy, and therefore can provide better guidance for the administration of various opioids, including remifentanil, fentanyl, and sufentanil. Indeed, SPI-guided analgesia is associated with lower intraoperative opioid consumption, faster patient recovery, and comparable or lower levels of postoperative pain and rates of adverse events compared with conventional analgesia. In addition, SPI monitoring allows for the degree of postoperative pain and analgesic requirements to be predicted through the SPI values immediately before patient arousal. However, because patient age, effective circulating volume, position, concomitant medication and anesthetic regimen and level of consciousness may be confounding factors in SPI monitoring, clinicians must be careful when interpreting SPI values. In addition, as SPI values can differ depending on anesthetic and analgesic regimens and the underlying disease, an awareness of the effects of these variables with an understanding of the advantages and disadvantages of SPI monitoring compared to other nociception monitoring devices is essential. Therefore, this review aimed to help clinicians perform optimal SPI-guided analgesia and to assist with the establishment of future research designs through clarifying current usefulness and limitations of SPI monitoring in perioperative pain management.
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Affiliation(s)
- Seok Kyeong Oh
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Young Ju Won
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Byung Gun Lim
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
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Chen X, Zhu Y, Peng K, Wang Q, Feng C. Effect of S-ketamine on the intraoperative Surgical Pleth Index in patients undergoing video-assisted thoracoscopic surgery: a single-center randomized controlled clinical trial. J Int Med Res 2023; 51:3000605231198386. [PMID: 37694976 PMCID: PMC10498711 DOI: 10.1177/03000605231198386] [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: 06/12/2023] [Accepted: 08/14/2023] [Indexed: 09/12/2023] Open
Abstract
OBJECTIVE To investigate whether S-ketamine affects the Surgical Pleth Index (SPI) during video-assisted thoracoscopic surgery. METHODS Eighty-four patients undergoing video-assisted thoracoscopic lung lobectomy were enrolled. They were randomly assigned to an S-ketamine group (group S) and an equivalent normal saline group (group N). SPI values were recorded; and pain score on a numerical rating scale (NRS), the consumption of opioids, rescue analgesia, and post-operative nausea and vomiting (PONV) were evaluated. RESULTS The SPI and heart rate of the S-ketamine group were significantly lower 30 minutes after the start of surgery and at the end. The NRS score was lower in the S-ketamine group 6 and 12 hours postoperatively, but there were no differences in mean blood pressure or the NRS score 24 and 48 hours postoperatively. Rescue analgesia was required less frequently by the S-ketamine group, but the incidence of PONV did not differ between the groups. CONCLUSIONS S-ketamine was associated with lower intraoperative SPI 30 minutes after the start and at the end of surgery. It also reduced opioid use intraoperatively and the NRS scores 6 and 12 hours postoperatively.Trial registration: Chinese Clinical Trial Registry (ChiCTR2000040012), 18/11/2020.
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Affiliation(s)
- Xian Chen
- Department of Anesthesia, The First Affiliated Hospital of Soochow University, Suzhou, Jiang Su, China
| | - Yumin Zhu
- Department of Anesthesia, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Ke Peng
- Department of Anesthesia, The First Affiliated Hospital of Soochow University, Suzhou, Jiang Su, China
| | - Qinyun Wang
- Department of Anesthesia, The First Affiliated Hospital of Soochow University, Suzhou, Jiang Su, China
| | - Changdong Feng
- Department of Anesthesia, The First Affiliated Hospital of Soochow University, Suzhou, Jiang Su, China
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Won YJ, Oh SK, Lim BG, Kim YS, Lee DY, Lee JH. Effect of surgical pleth index-guided remifentanil administration on perioperative outcomes in elderly patients: a prospective randomized controlled trial. BMC Anesthesiol 2023; 23:57. [PMID: 36803564 PMCID: PMC9936695 DOI: 10.1186/s12871-023-02011-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 02/03/2023] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND During general anesthesia, the surgical pleth index (SPI) monitors nociception. The evidence of SPI in the elderly remains scarce. We aimed to investigate whether there is a difference in perioperative outcomes following intraoperative opioid administration according to the surgical pleth index (SPI) value versus hemodynamic parameters (heart rate or blood pressure) in elderly patients. METHODS Patients aged 65-90 years who underwent laparoscopic colorectal cancer surgery under sevoflurane/remifentanil anesthesia were randomized to receive remifentanil guided by SPI (SPI group) or conventional clinical judgment based on hemodynamic parameters (conventional group). The primary endpoint was intraoperative remifentanil consumption. Secondary endpoints were intraoperative hemodynamic instability, pain score, fentanyl consumption and delirium in the post-anesthesia care unit (PACU), and perioperative changes in interleukin-6 and natural killer (NK) cell activity. RESULTS Seventy-five patients (38, SPI; 37, conventional) were included in the study. The SPI group consumed significantly more remifentanil intraoperatively than the conventional group (mean ± SD, 0.13 ± 0.05 vs. 0.06 ± 0.04 μg/kg/min, P < 0.001). Intraoperative hypertension and tachycardia were more common in the conventional group than in the SPI group. Pain score in the PACU (P = 0.013) and the incidence of delirium in the PACU were significantly lower in the SPI group than the conventional group (5.2% vs. 24.3%, P = 0.02). There was no significant difference in NK cell activity and interleukin-6 level. CONCLUSIONS In the elderly patients, SPI-guided analgesia provided appropriate analgesia with sufficient intraoperative remifentanil consumption, lower incidence of hypertension/ tachycardia events, and a lower incidence of delirium in the PACU than the conventional analgesia. However, SPI-guided analgesia may not prevent perioperative immune system deterioration. TRIAL REGISTRATION The randomized controlled trial was retrospectively registered in the UMIN Clinical Trials Registry (trial number: UMIN000048351; date of registration: 12/07/2022).
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Affiliation(s)
- Young Ju Won
- grid.411134.20000 0004 0474 0479Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Gurodong-Ro 148, Guro-Gu, Seoul, 08308 Republic of Korea
| | - Seok Kyeong Oh
- grid.411134.20000 0004 0474 0479Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Gurodong-Ro 148, Guro-Gu, Seoul, 08308 Republic of Korea
| | - Byung Gun Lim
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Gurodong-Ro 148, Guro-Gu, Seoul, 08308, Republic of Korea.
| | - Young Sung Kim
- grid.411134.20000 0004 0474 0479Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Gurodong-Ro 148, Guro-Gu, Seoul, 08308 Republic of Korea
| | - Do Yeop Lee
- grid.411134.20000 0004 0474 0479Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Gurodong-Ro 148, Guro-Gu, Seoul, 08308 Republic of Korea
| | - Jae Hak Lee
- grid.411134.20000 0004 0474 0479Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Gurodong-Ro 148, Guro-Gu, Seoul, 08308 Republic of Korea
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Hung SC, Hsu WT, Fu CL, Lai YW, Shen ML, Chen KB. Does surgical plethysmographic index-guided analgesia affect opioid requirement and extubation time? A systematic review and meta-analysis. J Anesth 2022; 36:612-622. [PMID: 35986787 PMCID: PMC9519716 DOI: 10.1007/s00540-022-03094-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/08/2022] [Indexed: 11/30/2022]
Abstract
Purpose This meta-analysis of all relevant clinical trials investigated surgical plethysmographic index (SPI)-guided analgesia’s efficacy under general anesthesia for perioperative opioid requirement and emergence time after anesthesia. Methods PubMed, Embase, Web of Science, and Cochrane Library were searched up to January 2022 to identify clinical trials comparing SPI-guided and conventional clinical practice for patients who underwent general anesthesia. With the random-effects model, we compared intraoperative opioid consumption, emergence time, postoperative pain, analgesia requirement, and incidence of postoperative nausea and vomiting (PONV). Results Thirteen randomized controlled trials (RCTs) (n = 1314) met our selection criteria. The overall pooled effect sizes of all RCTs indicated that SPI-guided analgesia could not significantly reduce opioid consumption during general anesthesia. SPI-guided analgesia accompanied with hypnosis monitoring could decrease intraoperative opioid consumption (standardized mean difference [SMD] − 0.31, 95% confidence interval [CI] − 0.63 to 0.00) more effectively than SPI without hypnosis monitoring (SMD 1.03, 95% CI 0.53–1.53), showing a significant difference (p < 0.001). SPI-guided analgesia could significantly shorten the emergence time, whether assessed by extubation time (SMD − 0.36, 95% CI − 0.70 to − 0.03, p < 0.05, I2 = 67%) or eye-opening time (SMD − 0.40, 95% CI − 0.63 to − 0.18, p < 0.001, I2 = 54%). SPI-guided analgesia did not affect the incidence of PONV, postoperative pain, and analgesia management. Conclusion SPI-guided analgesia under general anesthesia could enhance recovery after surgery without increasing the postoperative complication risk. However, it did not affect intraoperative opioid requirement. Notably, SPI-guided analgesia with hypnosis monitoring could effectively reduce intraoperative opioid requirement.
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Espitalier F, Idrissi M, Fortier A, Bélanger MÈ, Carrara L, Dakhlallah S, Rivard C, Brulotte V, Zaphiratos V, Loubert C, Godin N, Fortier LP, Verdonck O, Richebé P. "Impact of Nociception Level (NOL) index intraoperative guidance of fentanyl administration on opioid consumption, postoperative pain scores and recovery in patients undergoing gynecological laparoscopic surgery. A randomized controlled trial". J Clin Anesth 2021; 75:110497. [PMID: 34597955 DOI: 10.1016/j.jclinane.2021.110497] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 08/22/2021] [Accepted: 08/29/2021] [Indexed: 10/20/2022]
Abstract
STUDY OBJECTIVE The Nociception Level (NOL) index uses a multiparametric approach to measure the balance between sympathetic and parasympathetic systems activity. Recently, a strong correlation between the NOL index response to nociceptive stimuli and the level of opioid analgesia during surgery was reported. Others observed that intraoperative doses of remifentanil and sufentanil were reduced when the NOL index was used. So far, no study has evaluated the impact of NOL-guided fentanyl antinociception in laparoscopic gynecological surgery. The primary hypothesis of this present study was to evaluate whether intraoperative NOL-guided fentanyl administration would reduce intra-operative opioid consumption. Secondary hypotheses were to assess whether this would lead to lower postoperative opioid consumption and pain scores, as well as improved postoperative outcomes. SETTING University hospital, operating room. PATIENTS 70 adult patients, ASA 1-3, scheduled for total laparoscopic hysterectomy. INTERVENTIONS Patients were randomized into 2 groups: SOC (standardization of care) and NOL (using the NOL index to guide the administration of fentanyl). The depth of anesthesia was monitored with BIS™. Intraoperative fentanyl boluses were administered based on heart rate and mean arterial pressure variations in the SOC group, and NOL index for the NOL group. MEASUREMENTS Fentanyl total intraoperative dose administered was collected and also averaged per hour. Pain scores and hydromorphone consumption were assessed in the post-anesthesia care unit and up to 24 h. MAIN RESULTS Sixty-six patients completed the study, 33 in each group. Total intraoperative fentanyl administration was not different between the two groups (217 (70) in the NOL group vs 280 (210) in the SOC group (P = 0.11)). Nevertheless, intraoperative fentanyl administration per hour was reduced by 25% in the NOL-guided group compared to the SOC group: 81 (24) vs 108 (66) μg.h-1, respectively (P = 0.03). Hydromorphone consumption and pain scores in the post-anesthesia care unit and at 24 h were not significantly different between the two groups. CONCLUSION NOL-guided analgesia allowed for a 22% reduction of the total amount of intraoperative fentanyl which was not significant. Nevertheless, results reported a significant reduction by 25% in the doses of fentanyl averaged per hour of surgery and administered in the NOL-guided group compared with the standardized practice in laparoscopic gynecological surgery. The pain measured postoperatively was similar in the two groups while the average postoperative consumption of opioids to achieve the same level of pain scores in post-anesthesia care unit and at 24 h was not significantly reduced. Further larger multicenter studies centered towards postoperative outcomes are needed.
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Affiliation(s)
- Fabien Espitalier
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada; Department of Anesthesiology, Intensive Care of University Hospitals of Tours, France
| | - Moulay Idrissi
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Annik Fortier
- Department of Biostatistics, Montréal Health Innovations Coordinating Center (MHICC), Montréal, Canada
| | - Marie-Ève Bélanger
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Lucie Carrara
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Sarah Dakhlallah
- Department of Gynecology-Oncology surgery and Obstetric, Maisonneuve-Rosemont Hospital, CEMTL, Montréal, Canada
| | - Chantal Rivard
- Department of Gynecology-Oncology surgery and Obstetric, Maisonneuve-Rosemont Hospital, CEMTL, Montréal, Canada
| | - Véronique Brulotte
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Valérie Zaphiratos
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Christian Loubert
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Nadia Godin
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Louis-Philippe Fortier
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Olivier Verdonck
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada
| | - Philippe Richebé
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, Research Center of the CIUSSS de l'Est de l'Ile de Montréal (CEMTL), University of Montréal, Montréal, QC, Canada.
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Abstract
The intraoperative dosing of opioids is a challenge in routine anesthesia as the potential effects of intraoperative overdosing and underdosing are not completely understood. In recent years an increasing number of monitors were approved, which were developed for the detection of intraoperative nociception and therefore should enable a better control of opioid titration. The nociception monitoring devices use either continuous hemodynamic, galvanic or thermal biosignals reflecting the balance between parasympathetic and sympathetic activity, measure the pupil dilatation reflex or the nociceptive flexor reflex as a reflexive response to application of standardized nociceptive stimulation. This review article presents the currently available nociception monitors. Most of these monitoring devices detect nociceptive stimulations with higher sensitivity and specificity than changes in heart rate, blood pressure or sedation depth monitoring devices. There are only few studies on the effect of opioid titration guided by nociception monitoring and the possible postoperative benefits of these devices. All nociception monitoring techniques are subject to specific limitations either due to perioperative confounders (e.g. hypovolemia) or special accompanying medical conditions (e.g. muscle relaxation). There is an ongoing discussion about the clinical relevance of nociceptive stimulation in general anesthesia and the effect on patient outcome. Initial results for individual monitor systems show a reduction in opioid consumption and in postoperative pain level. Nevertheless, current evidence does not enable the routine use of nociception monitoring devices to be recommended as a clear beneficial effect on long-term outcome has not yet been proven.
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Guo J, Zhu W, Shi Q, Bao F, Xu J. Effect of surgical pleth index-guided analgesia versus conventional analgesia techniques on fentanyl consumption under multimodal analgesia in laparoscopic cholecystectomy: a prospective, randomized and controlled study. BMC Anesthesiol 2021; 21:167. [PMID: 34088270 PMCID: PMC8176708 DOI: 10.1186/s12871-021-01366-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/04/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The Surgical Pleth Index (SPI) is an objective tool that can reflect nociception-antinociception balance and guide the use of intraoperative analgesics. Multimodal analgesia has been neglected in many previous studies. The aim of this study was to compare fentanyl consumption using SPI-guided analgesia versus conventional analgesia techniques under multimodal analgesia in laparoscopic cholecystectomy. METHODS A total of 80 patients aged 18-65 years with American Society of Anaesthesiologists (ASA) grade I-II and a body mass index (BMI) of 18.5 to 30 kg/m2 who were scheduled for laparoscopic cholecystectomy under total intravenous anaesthesia from March 2020 to September 2020 were selected. Multimodal analgesia, including local infiltration of the surgical incision, nonsteroidal anti-inflammatory drugs and opioids, was adopted perioperatively. Fentanyl boluses of 1.0 µg/kg were administered to maintain the SPI value between 20 and 50 in the SPI group. By contrast, fentanyl boluses of 1.0 µg/kg were administered whenever the heart rate (HR) or mean arterial pressure (MAP) increased to 20 % above baseline or when the HR was greater than 90 beats per minute (bpm) in the control group. Preoperative and postoperative blood glucose, plasma cortisol and interleukin-6 (IL-6) levels were evaluated. Intraoperative haemodynamic events and propofol and fentanyl doses were noted. The extubation time, postoperative visual analogue scale (VAS) score, use of remedial analgesics and opioid-related adverse reactions were recorded. RESULTS In total, 18 of 80 patients withdrew for various reasons, and data from 62 patients were finally analysed. Intraoperative fentanyl consumption was significantly lower in the SPI group than in the control group (177.1 ± 65.9 vs. 213.5 ± 47.5, P = 0.016). The postoperative extubation time was shorter in the SPI group than in the control group (16.1 ± 5.2 vs. 22.1 ± 6.3, P < 0.001). Preoperative and postoperative blood glucose, plasma cortisol and IL-6 levels, intraoperative haemodynamic changes, postoperative VAS scores, remedial analgesic consumption and opioid-related adverse reactions were comparable in the two groups. CONCLUSIONS Lower doses of fentanyl are required intraoperatively with shorter extubation times when SPI is used to guide intraoperative analgesia compared to conventional analgesia techniques under multimodal analgesia in laparoscopic cholecystectomy. TRIAL REGISTRATION Chictr.org.cn ChiCTR2000030145 . Retrospectively Registered (Date of registration: February 24, 2020).
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Affiliation(s)
- Jian Guo
- Department of Anaesthesiology, The Fourth Affiliated Hospital, Zhejiang University, School of Medicine, 322000, Yiwu, Zhejiang, China
| | - Weigang Zhu
- Clinical Laboratory, The Fourth Affiliated Hospital, Zhejiang University, School of Medicine, 322000, Yiwu, Zhejiang, China
| | - Qinye Shi
- Department of Anaesthesiology, The Fourth Affiliated Hospital, Zhejiang University, School of Medicine, 322000, Yiwu, Zhejiang, China
| | - Fangping Bao
- Department of Anaesthesiology, The Fourth Affiliated Hospital, Zhejiang University, School of Medicine, 322000, Yiwu, Zhejiang, China
| | - Jianhong Xu
- Department of Anaesthesiology, The Fourth Affiliated Hospital, Zhejiang University, School of Medicine, 322000, Yiwu, Zhejiang, China.
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Rogobete AF, Bedreag OH, Papurica M, Popovici SE, Bratu LM, Rata A, Barsac CR, Maghiar A, Garofil DN, Negrea M, Petcu LB, Toma D, Dumbuleu CM, Rimawi S, Sandesc D. Multiparametric Monitoring of Hypnosis and Nociception-Antinociception Balance during General Anesthesia-A New Era in Patient Safety Standards and Healthcare Management. ACTA ACUST UNITED AC 2021; 57:medicina57020132. [PMID: 33540844 PMCID: PMC7913052 DOI: 10.3390/medicina57020132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 11/16/2022]
Abstract
The development of general anesthesia techniques and anesthetic substances has opened new horizons for the expansion and improvement of surgical techniques. Nevertheless, more complex surgical procedures have brought a higher complexity and longer duration for general anesthesia, which has led to a series of adverse events such as hemodynamic instability, under- or overdosage of anesthetic drugs, and an increased number of post-anesthetic events. In order to adapt the anesthesia according to the particularities of each patient, the multimodal monitoring of these patients is highly recommended. Classically, general anesthesia monitoring consists of the analysis of vital functions and gas exchange. Multimodal monitoring refers to the concomitant monitoring of the degree of hypnosis and the nociceptive-antinociceptive balance. By titrating anesthetic drugs according to these parameters, clinical benefits can be obtained, such as hemodynamic stabilization, the reduction of awakening times, and the reduction of postoperative complications. Another important aspect is the impact on the status of inflammation and the redox balance. By minimizing inflammatory and oxidative impact, a faster recovery can be achieved that increases patient safety. The purpose of this literature review is to present the most modern multimodal monitoring techniques to discuss the particularities of each technique.
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Affiliation(s)
- Alexandru Florin Rogobete
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Ovidiu Horea Bedreag
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Marius Papurica
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Sonia Elena Popovici
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
- Correspondence: (S.E.P.); (L.M.B.); Tel.: +40-728-001-971
| | - Lavinia Melania Bratu
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Correspondence: (S.E.P.); (L.M.B.); Tel.: +40-728-001-971
| | - Andreea Rata
- Department of Vascular Surgery, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania;
- Clinic of Vascular Surgery, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Claudiu Rafael Barsac
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Andra Maghiar
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
| | - Dragos Nicolae Garofil
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Mihai Negrea
- Faculty of Political, Administrative and Communication Sciences, Babes-Bolyai University, 400376 Cluj Napoca, Romania;
| | - Laura Bostangiu Petcu
- Faculty of Management, The Bucharest University of Economic Studies, 020021 Bucharest, Romania;
| | - Daiana Toma
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Corina Maria Dumbuleu
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Samir Rimawi
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
| | - Dorel Sandesc
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (A.F.R.); (O.H.B.); (M.P.); (C.R.B.); (A.M.); (D.S.)
- Anaesthesia and Intensive Care Research Center, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (D.T.); (C.M.D.)
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300723 Timisoara, Romania;
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Cavaliere F, Allegri M, Apan A, Calderini E, Carassiti M, Cohen E, Coluzzi F, Di Marco P, Langeron O, Rossi M, Spieth P, Turnbull D. A year in review in Minerva Anestesiologica 2019. Anesthesia, analgesia, and perioperative medicine. Minerva Anestesiol 2021; 86:225-239. [PMID: 32118384 DOI: 10.23736/s0375-9393.20.14424-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Franco Cavaliere
- Department of Cardiovascular and Thoracic Sciences, A. Gemelli University Polyclinic, IRCCS and Foundation, Sacred Heart Catholic University, Rome, Italy -
| | - Massimo Allegri
- Unità Operativa Terapia del Dolore della Colonna e dello Sportivo, Policlinic of Monza, Monza, Italy.,Italian Pain Group, Milan, Italy
| | - Alparslan Apan
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Giresun, Giresun, Turkey
| | - Edoardo Calderini
- Unit of Women-Child Anesthesia and Intensive Care, Maggiore Polyclinic Hospital, Ca' Granda IRCCS and Foundation, Milan, Italy
| | - Massimiliano Carassiti
- Unit of Anesthesia, Intensive Care and Pain Management, Campus Bio-Medico University Hospital, Rome, Italy
| | - Edmond Cohen
- Department of Anesthesiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Flaminia Coluzzi
- Unit of Anesthesia, Department of Medical and Surgical Sciences and Biotechnologies, Intensive Care and Pain Medicine, Sapienza University, Rome, Italy
| | - Pierangelo Di Marco
- Department of Cardiovascular, Respiratory, Nephrological, Anesthesiologic, and Geriatric Sciences, Sapienza University, Rome, Italy
| | - Olivier Langeron
- Department of Anesthesia and Intensive Care, Henri Mondor University Hospital, Sorbonne University, Assistance Publique-Hôpitaux de Paris, Créteil, France
| | - Marco Rossi
- Institute of Anesthesia and Intensive Care, Sacred Heart Catholic University, Rome, Italy
| | - Peter Spieth
- Department of Anesthesiology and Critical Care Medicine, University Hospital of Dresden, Dresden, Germany
| | - David Turnbull
- Department of Anaesthetics and Neuro Critical Care, Royal Hallamshire Hospital, Sheffield, UK
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10
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Funcke S, Pinnschmidt HO, Brinkmann C, Wesseler S, Beyer B, Fischer M, Nitzschke R. Nociception level-guided opioid administration in radical retropubic prostatectomy: a randomised controlled trial. Br J Anaesth 2020; 126:516-524. [PMID: 33228979 DOI: 10.1016/j.bja.2020.09.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/30/2020] [Accepted: 09/24/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND This RCT investigated the effect of opioid titration by three different nociception monitoring devices or clinical signs during general anaesthesia. METHODS Ninety-six patients undergoing radical retropubic prostatectomy with propofol/remifentanil anaesthesia were randomised into one of four groups to receive remifentanil guided by one of three nociception monitoring devices (surgical pleth index [SPI], pupillary pain index [PPI], or nociception level [NOL]) or by clinical judgement (control). Intraoperative remifentanil requirement was the primary endpoint, whereas recovery parameters and stress hormone levels were secondary endpoints. RESULTS The mean [95% confidence interval {CI}] remifentanil administration rate differed between the groups: control 0.34 (0.32-0.37), SPI 0.46 (0.38-0.55), PPI 0.07 (0.06-0.08), and NOL 0.16 (0.12-0.21) μg kg-1 min-1(P<0.001). Intraoperative cessation of remifentanil administration occurred in different numbers (%) of patients: control 0 (0%), SPI 1 (4.3%), PPI 18 (75.0%), and NOL 11 (47.8%); P=0.002. The area under the curve analyses indicated differences in cumulative cortisol levels (mg L-1 min-1) amongst the groups: control 37.9 (33.3-43.1), SPI 38.6 (33.8-44.2), PPI 72.1 (63.1-82.3), and NOL 54.4 (47.6-62.1) (mean [95% CI]). Pairwise group comparison results were as follows: control vs SPI, P=0.830; control vs PPI, P<0.001; control vs NOL, P=0.001; SPI vs PPI, P<0.001; SPI vs NOL, P=0.002; and PPI vs NOL, P=0.009. CONCLUSIONS The nociception monitoring devices and clinical signs reflect the extent of nociception differently, leading to dissimilar doses of remifentanil. Very low remifentanil doses were associated with an increase and higher remifentanil doses were accompanied by a decrease in serum cortisol concentrations. Use of nociception monitoring devices for guiding intra-operative opioid dosing needs further validation. CLINICAL TRIAL REGISTRATION NCT03380949.
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Affiliation(s)
- Sandra Funcke
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | | | - Charlotte Brinkmann
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | - Stefan Wesseler
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | - Burkhard Beyer
- Martini-Klinik, Prostate Cancer Centre, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Marlene Fischer
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany
| | - Rainer Nitzschke
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, Hamburg, Germany.
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11
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Chen W, Feng Y, Chen X, Jiang F, Miao J, Chen S, Chen H. Effect of Laryngeal Mask Airway Insertion on Parameters Derived From Catacrotic Phase of Photoplethysmography Under Different Concentrations of Remifentanil. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE 2020; 8:2700609. [PMID: 33178499 PMCID: PMC7647452 DOI: 10.1109/jtehm.2020.3017368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/25/2020] [Accepted: 07/29/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND Some parameters have been extracted from photoplethysmography (PPG) with a good relativity with nociception, but without encouraging results in qualifying the balance of nociception-anti-nociception (NAN). The features of PPG have not been thoroughly depicted and more prospective univariate parameters deserve to be explored. The aim of this study was to investigate the ability of parameters derived from catacrotic phase of PPG to grade the level of analgesia. METHODS 45 patients with ASA I or II were randomized to receive a remifentanil effect-compartment target controlled infusion (Ceremi) of 0, 1, or 3 ng/ml, and a propofol effect-compartment target controlled infusion to maintain an acceptable level of hypnosis with state entropy (SE) at 40~60. Laryngeal mask airway (LMA) insertion was applied as a noxious stimulus. Five diastole-related parameters, namely diastolic interval (DI), diastolic slope (DS), the minimum slope during catacrotic phase (DSmin), the interval between DSmin and its nearest trough (DTI), and area difference ratio (ADR), were extracted. Pulse beat interval (PBI) was calculated as a reference parameter. RESULTS LMA insertion elicited a significant variation in all parameters except ADR during Ceremi of 0 and 1 ng/ml. Compared to PBI (prediction probability ([Formula: see text]) = 0.796), the parameters of DI, DS, and DTI presented a better consistence with the level of anti-nociceptive medication, with [Formula: see text] of 0.825, 0.822, and 0.822 respectively. CONCLUSION The features extracted from catacrotic phase of PPG, including DI, DS, and DTI, could provide a promising potential to qualify the balance of NAN.
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Affiliation(s)
- Wanlin Chen
- College of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou310027China
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalHangzhou310027China
| | - Ying Feng
- Department of AnesthesiaWomen’s Hospital, School of MedicineZhejiang UniversityHangzhou310006China
| | - Xinzhong Chen
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalHangzhou310027China
- Department of AnesthesiaWomen’s Hospital, School of MedicineZhejiang UniversityHangzhou310006China
| | - Feng Jiang
- College of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou310027China
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalHangzhou310027China
| | - Jiajun Miao
- College of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou310027China
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalHangzhou310027China
| | - Shali Chen
- College of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou310027China
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalHangzhou310027China
| | - Hang Chen
- College of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou310027China
- Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalHangzhou310027China
- Zhejiang LaboratoryConnected Healthcare Big Data Research CenterHangzhou311121China
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12
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Meijer FS, Niesters M, van Velzen M, Martini CH, Olofsen E, Edry R, Sessler DI, van Dorp ELA, Dahan A, Boon M. Does nociception monitor-guided anesthesia affect opioid consumption? A systematic review of randomized controlled trials. J Clin Monit Comput 2020; 34:629-641. [PMID: 31327102 PMCID: PMC7367908 DOI: 10.1007/s10877-019-00362-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/16/2019] [Indexed: 12/23/2022]
Abstract
Monitors that estimate nociception during anesthesia may be used to guide opioid and other analgesics administration to optimize anesthesia care and possibly outcome. We reviewed the literature to evaluate current evidence of the effect of nociception-guided management over standard anesthesia practice during surgery. A systematic review of the literature on the effect of nociception monitoring on anesthesia practice was conducted. Reports were eligible if they compared nociception-guided anesthesia to standard practice during surgery. Primary endpoint of this review is intraoperative opioid consumption. Secondary endpoints included hemodynamic control, postoperative pain and pain treatment. We identified 12 randomized controlled trials that compared one of five different nociception monitoring techniques to standard anesthesia care. Most studies were single center studies of small sample size. Six studies reported intraoperative opioid consumption as primary outcome. There was considerable variability with respect to surgical procedure and anesthesia technique. For nociception monitors that were investigated by more than one study, analysis of the pooled data was performed. The surgical plethysmographic index was the only monitor for which an intra operative opioid sparing effect was found. For the other monitors, either no effect was detected, or pooled analysis could not be performed due to paucity of study data. On secondary outcomes, no consistent effect of nociception-guided anesthesia could be established. Although some nociception monitors show promising results, no definitive conclusions regarding the effect of nociception monitoring on intraoperative opioid consumption or other anesthesia related outcome can be drawn.Clinical trial number PROSPERO ID 102913.
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Affiliation(s)
- Fleur S. Meijer
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Marieke Niesters
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Monique van Velzen
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Chris H. Martini
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Erik Olofsen
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Ruth Edry
- Department of Anesthesiology, Rambam Medical Centre, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| | - Daniel I. Sessler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH USA
| | - Eveline L. A. van Dorp
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Albert Dahan
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
| | - Martijn Boon
- Department of Anesthesiology, Leiden University Medical Center, Albinusdreef 2 (Postal Zone H5-Q), 2333 ZA Leiden, The Netherlands
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Predictive value of the surgical pleth index for the hemodynamic responses to trachea intubation and skin incision. J Clin Monit Comput 2019; 34:1303-1309. [PMID: 31808060 DOI: 10.1007/s10877-019-00425-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 11/17/2019] [Indexed: 10/25/2022]
Abstract
Surgical pleth index (SPI) has been widely investigated in assessing the nociceptive level. The aim of this study was to investigate the relationship between SPI level and patient responses to trachea intubation and skin incision. A total of 40 patients undergoing open abdominal general surgery were recruited for analyses. The patients were monitored with electrocardiogram, non-invasive blood pressure, SpO2, invasive blood pressure and SPI before anesthesia induction. Anesthesia was induced with midazolam, propofol, sufentanil and rocuronium and maintained with sufentanil and sevoflurane. Blood pressure, heart rate and SPI were recorded for analyses during the peri-intubation and peri-incision periods. A receiver operating characteristic (ROC) curve analysis was performed to analyze the predictive value of blood pressure, heart rate (HR) and SPI for hemodynamic responses for trachea intubation and skin incision. SPI had a similar changing trend to systolic blood pressure (SBP) and diastolic blood pressure (DBP). The SPI level was linearly correlated with SBP, DBP and HR. SPI increased significantly after intubation and incision in patients with positive but not negative responses to intubation and incision. The ROC analysis showed that only SBP level is predictive of intubation responses. These data suggested that SPI elevated under the noxious stimulation by intubation and incision, but it was not predictive of the hemodynamic responses to intubation and incision.
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Lim BG. Nociception monitoring tools using autonomic tone changes for intraoperative analgesic guidance in pediatric patients. Anesth Pain Med (Seoul) 2019; 14:380-392. [PMID: 33329766 PMCID: PMC7713809 DOI: 10.17085/apm.2019.14.4.380] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 09/30/2019] [Indexed: 12/03/2022] Open
Abstract
Nociception monitoring devices using changes in autonomic nervous system activity have been developed in numerous ways. Although there have been few studies conducted on children, compared to the relatively higher number of studies on adults, most of the nociception monitors in children, as in adults, appear to be more useful than the standard clinical practice that uses hemodynamic parameters in the evaluation and treatment of intraoperative nociception (pain) during general anesthesia. Particularly, when monitoring the surgical pleth index (SPI) in anesthetized children, the application of a new target range of SPI values (≤ 40) to the SPI monitoring criteria seems to be necessary for providing a more proper intraoperative analgesia. The analgesia nociception index (ANI) shows promising results in anesthetized adults, and recently, positive results along with cardiorespiratory coherence have been reported in pediatric patients. Newborn infant parasympathetic evaluation (NIPE) could be useful for providing adequate analgesia in newborns, infants, and children under 2 years of age in anesthetized or awake states. In cases of skin conductance and pupillometry, further studies are needed. Understanding the pros, cons, and limitations of these nociception monitoring tools will provide more effective and safe intraoperative analgesia to pediatric patients undergoing general anesthesia, and it may also help to plan and conduct promising research on the use of perioperative nociception monitoring in pediatric patients in the future.
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Affiliation(s)
- Byung Gun Lim
- Department of Anesthesiology and Pain Medicine, Korea University College of Medicine, Seoul, Korea
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15
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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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