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Wang TC, Li WY, Lai JCY, Kuo TBJ, Yang CCH. Nociception Effect on Frontal Electroencephalogram Waveform and Phase-Amplitude Coupling in Laparoscopic Surgery. Anesth Analg 2024; 138:1070-1080. [PMID: 37428681 DOI: 10.1213/ane.0000000000006609] [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: 07/12/2023]
Abstract
BACKGROUND Electroencephalographic pattern changes during anesthesia reflect the nociception-analgesia balance. Alpha dropout, delta arousal, and beta arousal with noxious stimulation have been described during anesthesia; however, data on the reaction of other electroencephalogram signatures toward nociception are scarce. Analyzing the effects of nociception on different electroencephalogram signatures may help us find new nociception markers in anesthesia and understand the neurophysiology of pain in the brain. This study aimed to analyze the electroencephalographic frequency pattern and phase-amplitude coupling change during laparoscopic surgeries. METHODS This study evaluated 34 patients who underwent laparoscopic surgery. The electroencephalogram frequency band power and phase-amplitude coupling of different frequencies were analyzed across 3 stages of laparoscopy: incision, insufflation, and opioid stages. Repeated-measures analysis of variance with a mixed model and the Bonferroni method for multiple comparisons were used to analyze the changes in the electroencephalogram signatures between the preincision and postincision/postinsufflation/postopioid phases. RESULTS During noxious stimulation, the frequency spectrum showed obvious decreases in the alpha power percentage after the incision (mean ± standard error of the mean [SEM], 26.27 ± 0.44 and 24.37 ± 0.66; P < .001) and insufflation stages (26.27 ± 0.44 and 24.40 ± 0.68; P = .002), which recovered after opioid administration. Further phase-amplitude analyses showed that the modulation index (MI) of the delta-alpha coupling decreased after the incision stage (1.83 ± 0.22 and 0.98 ± 0.14 [MI × 10 3 ]; P < .001), continued to be suppressed during the insufflation stage (1.83 ± 0.22 and 1.17 ± 0.15 [MI × 10 3 ]; P = .044), and recovered after opioid administration. CONCLUSIONS Alpha dropout during noxious stimulation is observed in laparoscopic surgeries under sevoflurane. In addition, the modulation index of delta-alpha coupling decreases during noxious stimulation and recovers after the administration of rescue opioids. Phase-amplitude coupling of the electroencephalogram may be a new approach for evaluating the nociception-analgesia balance during anesthesia.
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Affiliation(s)
- Tzu Chun Wang
- From the Department of Anaesthesia, Taitung MacKay Memorial Hospital, Taitung, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wei Yi Li
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jerry Cheng-Yen Lai
- Department of Medical Research, Taitung MacKay Memorial Hospital, Taitung, Taiwan
- Master Program in Biomedicine, College of Science and Engineering, National Taitung University, Taitung, Taiwan
| | - Terry B J Kuo
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Sleep Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
- Tsoutun Psychiatric Center, Ministry of Health and Welfare, Nantou, Taiwan
| | - Cheryl C H Yang
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Sleep Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
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Kuo YW, Chen YT, Lieu AS, Lee MS, Su YF, Lai HC, Wu ZF. Predicting the optimal concentration of remifentanil for skull pin fixation with hemodynamic and analgesia nociception index monitoring. Sci Rep 2024; 14:6441. [PMID: 38499567 PMCID: PMC10948835 DOI: 10.1038/s41598-024-56283-z] [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: 09/29/2023] [Accepted: 03/04/2024] [Indexed: 03/20/2024] Open
Abstract
Inadequate antinociception during skull pin fixation may cause hemodynamic instability in intracranial surgery. The optimal concentration of remifentanil to provide adequate antinociception and stable hemodynamics during skull pin fixation under analgesia nociception index monitoring is unknown. This study is to assess the 90% effective concentration of remifentanil for skull pin fixation under hemodynamic and analgesia nociception index monitoring. Twenty-six patients were enrolled for intracranial surgery, anesthesia was induced and maintained under total intravenous anesthesia using target-controlled infusion for remifentanil and propofol under analgesia nociception index and bispectral index monitoring. Skull pin fixation was performed at different effect-site concentrations of remifentanil required for Dixon's up-and-down method with a step size of 0.5 ng/ml under bispectral index 40-60. Inadequate antinociception is defined when either ANI < 30 or > 20% in hemodynamic changes from baseline (e.g. heart rate > 100 beats/min, or blood pressure > 180/100 mmHg) and the effect-site concentration of remifentanil is considered as failure. It is considered success as ANI > 30 and < 20% hemodynamic changes from baseline simultaneously. Seven pairs of failure/success were used for probit analysis. The 90% effective concentration of remifentanil for skull pin fixation with adequate antinociception and hemodynamic stability was 4.7 ng/ml.
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Affiliation(s)
- Yi-Wei Kuo
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, No. 100, Tzyou 1st Rd., Sanmin Dist., Kaohsiung City, 80756, Taiwan, ROC
| | - Ying-Tzu Chen
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, No. 100, Tzyou 1st Rd., Sanmin Dist., Kaohsiung City, 80756, Taiwan, ROC
| | - Ann-Shung Lieu
- Department of Surgery, Division of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC
| | - Meei-Shyuan Lee
- School of Public Health, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Yu-Feng Su
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, No. 100, Tzyou 1st Rd., Sanmin Dist., Kaohsiung City, 80756, Taiwan, ROC
| | - Hou-Chuan Lai
- Department of Anesthesiology, Tri-Service General Hospital and National Defense Medical Center, #325, Section 2, Chenggung Road, Neihu 114, Taipei, Taiwan, ROC.
| | - Zhi-Fu Wu
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, No. 100, Tzyou 1st Rd., Sanmin Dist., Kaohsiung City, 80756, Taiwan, ROC.
- Department of Anesthesiology, Tri-Service General Hospital and National Defense Medical Center, #325, Section 2, Chenggung Road, Neihu 114, Taipei, Taiwan, ROC.
- Department of Anesthesiology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC.
- Center for Regional Anesthesia and Pain Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, ROC.
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Ledowski T. [New Approaches in Perioperative Algesimetry]. Anasthesiol Intensivmed Notfallmed Schmerzther 2023; 58:640-653. [PMID: 38056443 DOI: 10.1055/a-2006-9923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The measurement of anaesthetic depth and muscle relaxation have been routine procedures during general anaesthesia for years. Quantification of intraoperative nociception, on the other hand, is still largely impossible. Various methods have been tested and commercialised for more than 10 years. However, a real breakthrough has not yet been achieved and the routine application of all methods available so far is not without problems. This article explains methodological similarities, but also points to specific aspects of various commercial solutions for perioperative algesimetry.
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Kim MK, Choi GJ, Oh KS, Lee SP, Kang H. Pain Assessment Using the Analgesia Nociception Index (ANI) in Patients Undergoing General Anesthesia: A Systematic Review and Meta-Analysis. J Pers Med 2023; 13:1461. [PMID: 37888072 PMCID: PMC10608238 DOI: 10.3390/jpm13101461] [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: 08/23/2023] [Revised: 09/18/2023] [Accepted: 09/23/2023] [Indexed: 10/28/2023] Open
Abstract
The analgesia nociception index (ANI) has emerged as a potential measurement for objective pain assessment during general anesthesia. This systematic review and meta-analysis aimed to evaluate the accuracy and effectiveness of ANI in assessing intra- and post-operative pain in patients undergoing general anesthesia. We conducted a comprehensive search of Ovid-MEDLINE, Ovid-EMBASE, Cochrane Central Register of Controlled Trials, Google Scholar, public clinical trial databases (ClinicalTrials and Clinical Research Information Service), and OpenSIGLE to identify relevant studies published prior to May 2023 and included studies that evaluated the accuracy and effectiveness of ANI for intra- or post-operative pain assessment during general anesthesia. Among the 962 studies identified, 30 met the eligibility criteria and were included in the systematic review, and 17 were included in the meta-analysis. For predicting intra-operative pain, pooled sensitivity, specificity, diagnostic odds ratio (DOR), and area under curve of ANI were 0.81 (95% confidence interval [CI] = 0.79-0.83; I2 = 68.2%), 0.93 (95% CI = 0.92-0.93; I2 = 99.8%), 2.32 (95% CI = 1.33-3.30; I2 = 61.7%), and 0.77 (95% CI = 0.76-0.78; I2 = 87.4%), respectively. ANI values and changes in intra-operative hemodynamic variables showed statistically significant correlations. For predicting post-operative pain, pooled sensitivity, specificity, and DOR of ANI were 0.90 (95% CI = 0.87-0.93; I2 = 58.7%), 0.51 (95% CI = 0.49-0.52; I2 = 99.9%), and 3.38 (95% CI = 2.87-3.88; I2 = 81.2%), respectively. ANI monitoring in patients undergoing surgery under general anesthesia is a valuable measurement for predicting intra- and post-operative pain. It reduces the use of intra-operative opioids and aids in pain management throughout the perioperative period.
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Affiliation(s)
- Min Kyoung Kim
- Department of Anesthesiology and Pain Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea; (M.K.K.); (G.J.C.); (K.S.O.)
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong-si 14353, Republic of Korea
| | - Geun Joo Choi
- Department of Anesthesiology and Pain Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea; (M.K.K.); (G.J.C.); (K.S.O.)
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Seoul 06973, Republic of Korea
| | - Kyung Seo Oh
- Department of Anesthesiology and Pain Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea; (M.K.K.); (G.J.C.); (K.S.O.)
| | - Sang Phil Lee
- Department of Biomedical Engineering Graduate School, Chungbuk National University, Cheongju-si 28644, Republic of Korea;
| | - Hyun Kang
- Department of Anesthesiology and Pain Medicine, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea; (M.K.K.); (G.J.C.); (K.S.O.)
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Seoul 06973, Republic of Korea
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Hum B, Christophides A, Jin Z, Elias M, Taneja K, Bergese SD. The validity and applications of the analgesia nociception index: a narrative review. Front Surg 2023; 10:1234246. [PMID: 37638120 PMCID: PMC10448251 DOI: 10.3389/fsurg.2023.1234246] [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: 06/03/2023] [Accepted: 07/31/2023] [Indexed: 08/29/2023] Open
Abstract
Pain refers to the subjective, unpleasant experience that is related to illness or injury. In contrast to pain, nociception refers to the physiological neural processing of noxious stimuli, such as intra-operative surgical stimuli. One novel device, the Analgesia Nociception Index (ANI), aims to objectively measure intra-operative nociception by analyzing the heart rate variability in patients undergoing surgery. Through this method of nociceptive monitoring, the ANI device aims to provide an objective, continuous evaluation of patient comfort levels and allow anesthesiologists to better manage surgical stress and patient analgesia, perhaps with even better efficacy than current practices used to assess nociception. Additionally, ANI may have clinical application in settings outside of the operating room, such as in the intensive care unit. In this narrative review, we compiled and summarized the findings of many studies that have investigated ANI's validity and applications in different clinical settings. Currently, the literature appears mostly supportive of ANI's ability to detect nociception in both surgical and non-surgical settings. However, the ability for ANI to provide clinical benefits, such as decreased intra-operative opioid use, post-operative opioid use, and post-operative pain compared to standard practices appear controversial. Because of the wide variety of methodology, clinical settings, patient populations, and limitations in these studies, more investigation of ANI is needed before any firm conclusions can be drawn on its clinical benefits.
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Affiliation(s)
- Bill Hum
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, United States
| | - Alexa Christophides
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, United States
| | - Zhaosheng Jin
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, United States
| | - Murad Elias
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, United States
| | - Kamil Taneja
- Medical Scientist Training Program, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, United States
| | - Sergio D. Bergese
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY, United States
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Yoon HK, Kim YJ, Lee HS, Seo JH, Kim HS. A randomised controlled trial of the analgesia nociception index for intra-operative remifentanil dose and pain after gynaecological laparotomy. Anaesthesia 2023; 78:988-994. [PMID: 36960477 DOI: 10.1111/anae.16008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2023] [Indexed: 03/25/2023]
Abstract
We aimed to investigate the effect of the analgesia nociception index on postoperative pain. We randomly allocated 170 women scheduled for gynaecological laparotomy and analysed results from 159: in 80 women, remifentanil was infused to maintain analgesia nociception indices 50-70; and in 79 women, remifentanil was infused to maintain systolic blood pressure < 120% of baseline values. The primary outcome was the proportion of women with pain scores ≥ 5 (scale 0-10) within 40 min of admission to recovery. The proportion of women with pain scores ≥ 5 was 62/80 (78%) vs. 64/79 (81%), p = 0.73. Mean (SD) doses of fentanyl in recovery were 53.6 (26.9) μg vs. 54.8 (20.8) μg, p = 0.74. Intra-operative remifentanil doses were 0.124 (0.050) μg.kg-1 .min-1 vs. 0.129 (0.044) μg.kg-1 .min-1 , p = 0.55.
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Affiliation(s)
- H-K Yoon
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y J Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H S Lee
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J-H Seo
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H-S Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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Sharma P, Shwethashri KR, Chakrabarti D, Sadashiva N, Shah K, Gopalakrishna KN. Analgesia Nociception Index (ANI) as a monitor of peri-operative nociception-antinociception balance in paediatric craniotomies: a prospective observational study. Childs Nerv Syst 2023; 39:2169-2176. [PMID: 36869908 DOI: 10.1007/s00381-023-05905-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023]
Abstract
INTRODUCTION Analgesia Nociception Index (ANI) as a monitor of peri-operative nociception-anti-nociception balance has not been studied in paediatric neurosurgery. The objectives were to study the correlation between ANI (Mdoloris Education system) and revised FLACC (r-FLACC) score for the prediction of acute postoperative pain in paediatric population undergoing elective craniotomies and to compare the changes in ANI values with heart rate (HR), mean arterial pressure (MAP) and surgical plethysmographic index (SPI) during various time points of intraoperative noxious stimulation and before and after opioid administration. METHODS This prospective observational pilot study included 14 patients between 2 and 12 years of age undergoing elective craniotomies. HR, MAP, SPI, ANI instantaneous (ANIi) and ANI mean (ANIm) values were recorded intraoperatively and before and after opioid administration. Postoperatively HR, MAP, ANIi and ANIm, and pain scores (r-FLACC scale) were recorded. RESULTS There was a statistically significant negative correlation between ANIi and ANIm with r-FLACC during the time course of PACU stay (r = - 0.89, p < 0.001 and r = - 0.88 and p < 0.001 respectively). Intraoperatively, in patients with ANIi values < 50, with additional fentanyl administration, there was an increasing trend in values beyond 50, which was statistically significant (p < 0.05) at 3, 4, 5 and 10 min. The trend in changes of SPI after opioid administration was not found to be significant for patients irrespective of the baseline SPI values. CONCLUSION The ANI is a reliable tool for objective assessment of acute postoperative pain as assessed by r-FLACC in children undergoing craniotomies for intracranial lesions. It may be used as a guide to nociception-antinociception balance during the peri-operative period in this population.
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Affiliation(s)
- Prachi Sharma
- Department of Neuroanaesthesia and Neurocritical care, National Institute of Mental Health & Neurosciences (NIMHANS), 3rd floor Faculty Block, Hosur Road, Bangalore, 560029, India
| | - Kondavagilu Ramaprasannakumar Shwethashri
- Department of Neuroanaesthesia and Neurocritical care, National Institute of Mental Health & Neurosciences (NIMHANS), 3rd floor Faculty Block, Hosur Road, Bangalore, 560029, India
| | - Dhritiman Chakrabarti
- Department of Neuroanaesthesia and Neurocritical care, National Institute of Mental Health & Neurosciences (NIMHANS), 3rd floor Faculty Block, Hosur Road, Bangalore, 560029, India
| | - Nishanth Sadashiva
- Department of Neurosurgery, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, Karnataka, India
| | - Keyur Shah
- Department of Neurosurgery, National Institute of Mental Health & Neurosciences (NIMHANS), Bangalore, Karnataka, India
| | - Kadarapura Nanjundaiah Gopalakrishna
- Department of Neuroanaesthesia and Neurocritical care, National Institute of Mental Health & Neurosciences (NIMHANS), 3rd floor Faculty Block, Hosur Road, Bangalore, 560029, India.
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Ruíz-López P, Domínguez JM, Morgaz J, Quirós-Carmona S, Navarrete-Calvo R, Gómez-Villamandos RJ, Fernández-Sarmiento JA, Granados MM. Evaluation of the Averaged Parasympathetic Tone Activity and Its Dynamic Variation to Assess Intraoperative Nociception in Relation to Hemodynamic Changes in Dogs. Vet Q 2023:1-19. [PMID: 37467574 PMCID: PMC10367571 DOI: 10.1080/01652176.2023.2239311] [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: 12/08/2022] [Revised: 05/15/2023] [Accepted: 07/15/2023] [Indexed: 07/21/2023] Open
Abstract
This study aimed to determine the performance of the averaged parasympathetic tone activity (PTAm) and its dynamic variation (ΔPTA) to assess intraoperative nociception in relation to heart rate (HR) and direct mean arterial pressure (MAP) in dogs undergoing laparoscopic ovariectomy. This prospective, observational, clinical study included 32 bitches. The PTAm, HR, MAP, and bispectral index (BIS) were assessed before (pre-stimulus), as well as 1 min and 2 min after, four surgical stimuli: insufflation, introduction of trocars, and removal of the left and right ovaries. A two-way ANOVA was performed to compare PTAm, HR, MAP, and BIS data across surgical stimuli. A ≥20% drop in PTAm or a ≥20% increase in HR and/or MAP regarding the pre-stimulus values was considered a PTAm-drop and/or a hemodynamic response, respectively. The performance of PTAm pre-stimulus, PTAm 1 min, and ΔPTA in predicting the hemodynamic response was assessed by calculation of the area under the receiver operating characteristic (ROC) curve. At insufflation, PTAm decreased after 1 (p = 0.010) and 2 (p = 0.045)min, and ΔPTA was different (p = 0.005) between dogs that presented hemodynamic response and dogs that did not. At PTAm-drop, MAP increased after 1 min (p = 0.001) and 2 min (p = 0.001) with respect to pre-stimulus value, whereas HR and BIS did not change. ROC curves showed a threshold value of PTAm pre-stimulus ≤51 to detect hemodynamic response (sensitivity 69%, specificity 52%). The PTAm and ΔPTA only assessed intraoperative nociception during insufflation. The PTAm pre-stimulus association to the hemodynamic response in anaesthetized dogs showed poor sensitivity and no specificity.
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Affiliation(s)
- Patricia Ruíz-López
- Department of Large Animal Surgery, Anaesthesia and Orthopedics, Faculty of Veterinary Medicine, University of Ghent, 9820 Merelbeke, Belgium
| | - Juan Manuel Domínguez
- Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Cordoba, 14014 Cordoba, Spain
| | - Juan Morgaz
- Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Cordoba, 14014 Cordoba, Spain
| | - Setefilla Quirós-Carmona
- Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Cordoba, 14014 Cordoba, Spain
| | - Rocío Navarrete-Calvo
- Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Cordoba, 14014 Cordoba, Spain
| | | | | | - M M Granados
- Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Cordoba, 14014 Cordoba, Spain
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Less Fluctuation in Hemodynamics of the Wide-Awake Local Anesthesia No Tourniquet Technique Than General Anesthesia in Distal Radius Plating Surgery: A Prospective Case-Control Study. J Clin Med 2022; 11:jcm11041123. [PMID: 35207401 PMCID: PMC8875852 DOI: 10.3390/jcm11041123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/11/2022] [Accepted: 02/19/2022] [Indexed: 01/25/2023] Open
Abstract
This prospective case-control study aimed to compare the intraoperative hemodynamic changes between the wide-awake local anesthesia no tourniquet (WALANT) technique and general anesthesia (GA) in patients undergoing distal radius plating surgery. Forty adults with distal radius fractures underwent plating surgery via the WALANT technique (20 patients) or GA (20 patients). Mean arterial pressure (MAP) and heart rate were recorded. Intraoperative pain intensity was measured using the visual analog scale (VAS) for pain in the WALANT group. The measures of hemodynamics and VAS were recorded at seven-time points perioperatively. The VAS score decreased significantly compared with the preoperative status in the WALANT group for most of the intraoperative period except during injections of local anesthetics and fracture reduction. The intraoperative MAP in the WALANT group showed no significant change during the perioperative period. In addition, the WALANT group showed fewer perioperative MAP fluctuations than the GA group (p < 0.05). The reduction and plating quality were similar between the two groups. WALANT provided a feasible technique with less fluctuation in hemodynamic status. With gentle manipulation of the fracture reduction, distal radius plating surgery using the WALANT technique is a well-tolerated surgical procedure and shows similar reduction and plating quality to GA.
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Bansal S, Muthukalai S, Chakrabarti D, Umamaheswara Rao GS. Reliability of analgesia nociception index (ANI) and surgical pleth index (SPI) during episodes of bleeding – A pilot study. Indian J Anaesth 2022; 66:505-510. [PMID: 36111088 PMCID: PMC9469000 DOI: 10.4103/ija.ija_20_22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/03/2022] [Accepted: 07/05/2022] [Indexed: 11/04/2022] Open
Abstract
Background and Aims: Methods: Results: Conclusion:
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Shahiri TS, Richebé P, Richard-Lalonde M, Gélinas C. Description of the validity of the Analgesia Nociception Index (ANI) and Nociception Level Index (NOL) for nociception assessment in anesthetized patients undergoing surgery: a systematized review. J Clin Monit Comput 2021; 36:623-635. [PMID: 34783941 DOI: 10.1007/s10877-021-00772-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 10/17/2021] [Indexed: 11/29/2022]
Abstract
Maintaining optimum analgesia in anesthetized patients is challenging due to the inability to self-report pain or exhibit pain-related behaviours. The Analgesia Nociception Index (ANI) (based on heart rate variability [HRV]) and the Nociception Level Index (NOL) (based on HRV, photoplethysmography, skin conductance, and temperature) both include HRV and provide continuous index monitoring for nociception assessment. The research question was: "What are the validation strategies of the NOL and ANI for nociception assessment in anesthetized patients?". The objectives were to describe and analyze the validation strategies and results. A systematized review was conducted using a comprehensive search with keywords under three concepts (nociception/pain, ANI/NOL, and validity) in four databases. A quality assessment using an adapted GRADE approach for measurement tools, and a risk of bias assessment using QUADAS-2 tool were performed by two reviewers. Out of 525 results, 15 validation studies were included. Strategies included hypothesis testing, discriminative, and criterion validation. Significant changes in ANI/NOL values were found in response to nociceptive stimuli at different opioid concentrations (hypothesis testing). Higher ANI/NOL values were observed during nociceptive stimuli (discriminative). AUCs ranging from 0.83 to 0.99 were obtained to detect nociceptive stimuli (criterion). Both technologies performed superiorly in detecting nociceptive stimuli compared to individual monitoring of HR and blood pressure. Although the aforementioned validation strategies are deemed appropriate, in the absence of a gold standard, criterion validation findings should be interpreted with caution. Moreover, reliability could be examined using test-retest with consistent ANI/NOL values during a stable time-interval.
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Affiliation(s)
- T Shiva Shahiri
- Ingram School of Nursing, McGill University, Montréal, Canada.,Centre for Nursing Research and Lady Davis Institute, Jewish General Hospital - CIUSSS West-Central Montréal, Montréal, Canada
| | - Philippe Richebé
- Department of Anesthesiology and Pain Medicine, University of Montréal, Hôpital Maisonneuve-Rosemont - CIUSSS Est-de-lÏle-de-Montréal, Montréal, Canada
| | - Melissa Richard-Lalonde
- Ingram School of Nursing, McGill University, Montréal, Canada.,Centre for Nursing Research and Lady Davis Institute, Jewish General Hospital - CIUSSS West-Central Montréal, Montréal, Canada
| | - Céline Gélinas
- Ingram School of Nursing, McGill University, Montréal, Canada. .,Centre for Nursing Research and Lady Davis Institute, Jewish General Hospital - CIUSSS West-Central Montréal, Montréal, Canada.
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Carella M, Beck F, Tran G, Bonhomme V, Franssen C. In Response. Anesth Analg 2021; 133:e43-e46. [PMID: 34403403 DOI: 10.1213/ane.0000000000005646] [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)
- Michele Carella
- Department of Anesthesia and Intensive Care Medicine, Liege University Hospital, Liege, Belgium,
| | - Florian Beck
- Department of Anesthesia and Intensive Care Medicine, Liege University Hospital, Liege, Belgium,
| | - Gabriel Tran
- Department of Anesthesia and Intensive Care Medicine, Liege University Hospital, Liege, Belgium,
| | - Vincent Bonhomme
- Department of Anesthesia and Intensive Care Medicine, Liege University Hospital, Liege, Belgium, University Department of Anesthesia and Intensive Care Medicine, Centre Hospitalier Regional de la Citadelle, Liege, Belgium, Anesthesia and Intensive Care Laboratory, GIGA-Consciousness Thematic Unit, GIGA-Research, Liege University, Liege, Belgium
| | - Colette Franssen
- Department of Anesthesia and Intensive Care Medicine, Liege University Hospital, Liege, Belgium
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Jozefowicz E, Sabourdin N, Fontaine V, Lambelin V, Lejeune V, Menu H, Bourai M, Tavernier B. Prediction of reactivity during tracheal intubation by pre-laryngoscopy tetanus-induced ANI variation. J Clin Monit Comput 2021; 36:93-101. [PMID: 33387153 DOI: 10.1007/s10877-020-00624-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 11/24/2020] [Indexed: 11/30/2022]
Abstract
The ANI is a nociception monitor based on the high frequency parts of heart rate variability. Tracheal intubation may induce potentially deleterious hemodynamic disturbances or motor reactions if analgesia is inadequate. We investigated whether ANI modification generated by a standardized moderate short tetanic stimulation performed before laryngoscopy could predict hemodynamic or somatic reactions to subsequent intubation. We designed a prospective, interventional, monocentric, pilot study. Regional ethics board approved the study, written informed consent was obtained from each participant. Before laryngoscopy, under steady-state total intravenous anaesthesia with propofol and remifentanil, the ulnar nerve was stimulated with a 5 s tetanus (70 mA, 50 Hz). After another steady-state period, orotracheal intubation was performed. ANI variation, hemodynamic parameters and somatic reactions associated with tetanus and intubation were collected. To assess the predictability of hemodynamic or somatic reaction during laryngoscopy by tetanus-induced ANI variation, we calculated the area under the corresponding Receiver Operating Characteristic curve (AUCROC) and the 95% confidence intervals. Thirty-five patients were analyzed. ANI decreased by 21 ± 17 after tetanus. Regarding the ability of tetanus-induced ANI variation to predict hemodynamic or somatic reactions during subsequent intubation, the AUCROCs [95% CI] were 0.61 [0.41-0.81] and 0.52 [0.31-0.72] respectively. ANI varied after a short moderate tetanic stimulation performed before laryngoscopy but this variation was not predictive of a hemodynamic or somatic reaction during intubation.Trial registration NCT04354311, April 20th 2020, retrospectively registered.
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Affiliation(s)
- Elsa Jozefowicz
- CHU Lille, Pôle d'Anesthésie-Réanimation, 59000, Lille, France
| | - Nada Sabourdin
- Department of Anesthesiology, Armand Trousseau University Hospital, DMU DREAM, APHP, GRC 29, Sorbonne Université, Paris, France.
| | | | | | - Vincent Lejeune
- CHU Lille, Pôle d'Anesthésie-Réanimation, 59000, Lille, France
| | - Herve Menu
- CHU Lille, Pôle d'Anesthésie-Réanimation, 59000, Lille, France
| | - Mohamed Bourai
- CHU Lille, Pôle d'Anesthésie-Réanimation, 59000, Lille, France
| | - Benoit Tavernier
- CHU Lille, Pôle d'Anesthésie-Réanimation, 59000, Lille, France.,Univ. Lille, CHU Lille, ULR 2694 - METRICS: Évaluation des Technologies de santé et des Pratiques médicales, 59000, Lille, France
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Rogozov V, Vaněk T. The importance and options of peroperative evaluation of nociception. ANESTEZIOLOGIE A INTENZIVNI MEDICINA 2020. [DOI: 10.36290/aim.2020.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Anderson TA, Segaran JR, Toda C, Sabouri AS, De Jonckheere J. High-Frequency Heart Rate Variability Index: A Prospective, Observational Trial Assessing Utility as a Marker for the Balance Between Analgesia and Nociception Under General Anesthesia. Anesth Analg 2020; 130:1045-1053. [PMID: 31008745 DOI: 10.1213/ane.0000000000004180] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Maintaining a balance between nociception and analgesia perioperatively reduces morbidity and improves outcomes. Current intraoperative analgesic strategies are based on subjective and nonspecific parameters. The high-frequency heart rate (HR) variability index is purported to assess the balance between nociception and analgesia in patients under general anesthesia. This prospective observational study investigated whether intraoperative changes in the high-frequency HR variability index correlate with clinically relevant nociceptive stimulation and the addition of analgesics. METHODS Instantaneous and mean high-frequency HR variability indexes were measured continuously in 79 adult subjects undergoing general anesthesia for laparoscopic cholecystectomy. The indexes were compared just before and 2 minutes after direct laryngoscopy, orogastric tube placement, first skin incision, and abdominal insufflation and just before and 6 minutes after the administration of IV hydromorphone. RESULTS Data from 65 subjects were included in the final analysis. The instantaneous index decreased after skin incision ([SEM], 58.7 [2.0] vs 47.5 [2.0]; P < .001) and abdominal insufflation (54.0 [2.0] vs 46.3 [2.0]; P = .002). There was no change in the instantaneous index after laryngoscopy (47.2 [2.2] vs 40.3 [2.3]; P = .026) and orogastric tube placement (49.8 [2.3] vs 45.4 [2.0]; P = .109). The instantaneous index increased after hydromorphone administration (58.2 [1.9] vs 64.8 [1.8]; P = .003). CONCLUSIONS In adult subjects under general anesthesia for laparoscopic cholecystectomy, changes in the high-frequency HR variability index reflect alterations in the balance between nociception and analgesia. This index might be used intraoperatively to titrate analgesia for individual patients. Further testing is necessary to determine whether the intraoperative use of the index affects patient outcomes.
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Affiliation(s)
- T Anthony Anderson
- From the Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California
| | - Joshua R Segaran
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Chihiro Toda
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - A Sassan Sabouri
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Julien De Jonckheere
- Perinatal Environment and Health, Faculté of Médicine, University of Lille, Centre Hospitalier Universitaire, Lille, France
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Gonzalez-Cava JM, Arnay R, León A, Martín M, Reboso JA, Calvo-Rolle JL, Mendez-Perez JA. Machine learning based method for the evaluation of the Analgesia Nociception Index in the assessment of general anesthesia. Comput Biol Med 2020; 118:103645. [PMID: 32174322 DOI: 10.1016/j.compbiomed.2020.103645] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/21/2020] [Accepted: 02/03/2020] [Indexed: 11/25/2022]
Abstract
Measuring the level of analgesia to adapt the opioids infusion during anesthesia to the real needs of the patient is still a challenge. This is a consequence of the absence of a specific measure capable of quantifying the nociception level of the patients. Unlike existing proposals, this paper aims to evaluate the suitability of the Analgesia Nociception Index (ANI) as a guidance variable to replicate the decisions made by the experts when a modification of the opioid infusion rate is required. To this end, different machine learning classifiers were trained with several sets of clinical features. Data for training were captured from 17 patients undergoing cholecystectomy surgery. Satisfactory results were obtained when including information about minimum values of ANI for predicting a change of dose. Specifically, a higher efficiency of the Support Vector Machine (SVM) classifier was observed compared with the situation in which the ANI index was not included: accuracy: 86.21% (83.62%-87.93%), precision: 86.11% (83.78%-88.57%), recall: 91.18% (88.24%-91.18%), specificity: 79.17% (75%-83.33%), AUC: 0.89 (0.87-0.90) and kappa index: 0.71 (0.66-0.75). The results of this research evidenced that including information about the minimum values of ANI together with the hemodynamic information outperformed the decisions made regarding only non-specific traditional signs such as heart rate and blood pressure. In addition, the analysis of the results showed that including the ANI monitor in the decision making process may anticipate a dose change to prevent hemodynamic events. Finally, the SVM was able to perform accurate predictions when making different decisions commonly observed in the clinical practice.
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Affiliation(s)
- José M Gonzalez-Cava
- Departamento de Ingeniería Informática y Sistemas. Universidad de La Laguna (ULL), 38200, La Laguna, Tenerife, Spain.
| | - Rafael Arnay
- Departamento de Ingeniería Informática y Sistemas. Universidad de La Laguna (ULL), 38200, La Laguna, Tenerife, Spain
| | - Ana León
- Hospital Universitario de Canarias, San Cristóbal de La Laguna, Tenerife, Spain
| | - María Martín
- Hospital Universitario de Canarias, San Cristóbal de La Laguna, Tenerife, Spain
| | - José A Reboso
- Hospital Universitario de Canarias, San Cristóbal de La Laguna, Tenerife, Spain
| | - José Luis Calvo-Rolle
- Department of Industrial Engineering. University of A Coruña, Ferrol, A Coruña, Spain
| | - Juan Albino Mendez-Perez
- Departamento de Ingeniería Informática y Sistemas. Universidad de La Laguna (ULL), 38200, La Laguna, Tenerife, Spain
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Abstract
This review is intended to provide a summary of the literature pertaining to the perioperative care of neurosurgical patients and patients with neurological diseases. General topics addressed in this review include general neurosurgical considerations, stroke, neurological monitoring, and perioperative disorders of cognitive function.
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Ruíz-López P, Domínguez JM, Granados MDM. Intraoperative nociception-antinociception monitors: A review from the veterinary perspective. Vet Anaesth Analg 2019; 47:152-159. [PMID: 32007442 DOI: 10.1016/j.vaa.2019.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 08/12/2019] [Accepted: 09/24/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To review monitors currently available for the assessment of nociception-antinociception in veterinary medicine. DATABASES USED PubMed, Web of Science and Google Scholar. The results were initially filtered manually based on the title and the abstract. CONCLUSIONS The provision of adequate antinociception is difficult to achieve in veterinary anaesthesia. Currently, heart rate and arterial blood pressure are used to monitor the response to a noxious stimulus during anaesthesia, with minimum alveolar concentration-sparing effect and stress-related hormones used for this purpose in research studies. However, since none of these variables truly assess intraoperative nociception, several alternative monitoring devices have been developed for use in humans. These nociceptive-antinociceptive monitoring systems derive information from variables, such as electroencephalography, parasympathetic nervous system (PNS) response, sympathetic nervous system response and electromyography. Several of these monitoring systems have been investigated in veterinary medicine, although few have been used to assess intraoperative nociception in animals. There is controversy regarding their effectiveness and clinical use in animals. A nociceptive-antinociceptive monitoring system based on the PNS response has been developed for use in cats, dogs and horses. It uses the parasympathetic tone activity index, which is believed to detect inadequate intraoperative nociception-antinociception balance in veterinary anaesthesia. Nonetheless, there are limited published studies to date, and cardiovascular variables remain the gold standard. Consequently, further studies in this area are warranted.
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Affiliation(s)
- Patricia Ruíz-López
- Anaesthesiology Unit, Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain.
| | - Juan Manuel Domínguez
- Anaesthesiology Unit, Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
| | - María Del Mar Granados
- Anaesthesiology Unit, Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
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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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Theerth KA, Sriganesh K, Chakrabarti D, Reddy KRM, Rao GSU. Analgesia nociception index and hemodynamic changes during skull pin application for supratentorial craniotomies in patients receiving scalp block versus pin-site infiltration: A randomized controlled trial. Saudi J Anaesth 2019; 13:306-311. [PMID: 31572074 PMCID: PMC6753753 DOI: 10.4103/sja.sja_812_18] [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] [Indexed: 11/28/2022] Open
Abstract
Background: Noxious stimulation such as skull pin insertion for craniotomy elicits a significant hemodynamic response. Both regional analgesic techniques (pin-site infiltration [PSI] and scalp block [SB]), and systemic strategies (opioids, alpha-2 agonists, anesthetics, and beta-blockers) have shown to attenuate this response. Analgesia Nociception Index (ANI) provides objective information about the magnitude of nociception and adequacy of analgesia. This study compared ANI and hemodynamic changes in patients receiving local anesthetic SB versus PSI during skull pin application for craniotomy. Materials and Methods: Sixty adult patients scheduled for elective supratentorial tumor surgery were randomly allocated to receive local anesthetic SB or PSI for skull pin insertion after the induction of anesthesia. Data regarding heart rate (HR), blood pressure (BP), and ANI were collected every minute for 5 min after the skull pin insertion beginning from the baseline. Results: A significant difference was observed in ANI values between the SB (higher ANI) and the PSI groups during skull pin insertion, P < 0.001 and P = 0.003 for ANIi and ANIm, respectively. Similarly, a significant difference was seen in HR and BP both within and between the two groups during skull pin insertion (P < 0.001 for both). The magnitude and duration of change were smaller in the SB group compared with the PSI group for the parameters studied. A strong negative linear correlation was noted between ANI and hemodynamic parameters. Conclusions: The changes in HR, BP, and ANI were significantly less with local anesthetic SB compared with PSI during skull pin insertion in patients undergoing supratentorial craniotomy.
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Affiliation(s)
- Kaushic A Theerth
- Department of Neuroanaesthesia and Neurocritical Care, Rajagiri Hospital, Ernakulam, Kerala, India
| | - Kamath Sriganesh
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Dhritiman Chakrabarti
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - K R Madhusudan Reddy
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - G S Umamaheswara Rao
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
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Objective monitoring of nociception: a review of current commercial solutions. Br J Anaesth 2019; 123:e312-e321. [PMID: 31047645 DOI: 10.1016/j.bja.2019.03.024] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 02/11/2019] [Accepted: 03/04/2019] [Indexed: 11/22/2022] Open
Abstract
Nociception, in contrast to pain, is not a subjective feeling, but the physiological encoding and processing of nociceptive stimuli. However, monitoring nociception remains a challenge in attempts to lower the incidence of acute postoperative pain and the move towards a more automated approach to analgesia and anaesthesia. To date, several commercialised devices promise a more accurate reflection of nociception than the traditionally used vital signs, blood pressure and heart rate. This narrative review presents an overview of existing technologies and commercially available devices, and offers a perspective for future research. Although firm conclusions about individual methods may be premature, none currently appears to offer a sufficiently broad applicability. Furthermore, there is currently no firm evidence for any clinically relevant influence of such devices on patient outcome. However, the available monitors have significantly aided the understanding of underlying mechanisms and identification of potential pitfalls.
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Theerth KA, Sriganesh K, Reddy KM, Chakrabarti D, Umamaheswara Rao GS. Analgesia Nociception Index-guided intraoperative fentanyl consumption and postoperative analgesia in patients receiving scalp block versus incision-site infiltration for craniotomy. Minerva Anestesiol 2018; 84:1361-1368. [PMID: 29991223 DOI: 10.23736/s0375-9393.18.12837-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Scalp block or local anesthetic infiltration for craniotomy blunts hemodynamic response to noxious stimuli, reduces opioid requirement and decreases postoperative pain. Analgesia Nociception Index (ANI) provides objective information about the magnitude of pain (rated from 0 to 100 with 0 indicating extreme nociception and 100 indicating absence of nociception) and adequacy of intra-operative analgesia. This study compared intra-operative fentanyl consumption guided by ANI and postoperative pain in patients who receive scalp block with those who receive incision-site local anesthetic infiltration for craniotomy. METHODS Sixty adult patients undergoing elective supra-tentorial tumor surgery were randomly allocated to receive scalp block or incision-site infiltration after induction of anesthesia. Throughout the intra-operative period, patients received fentanyl 0.5 µg/kg/h and ANI was continuously monitored. Fentanyl 1 µg/kg bolus was administered when ANI decreased to <50. Intraoperative fentanyl consumption was compared using unpaired t-test. Correlation between ANI and postoperative numerical rating scale (NRS) pain score was done using Spearman's rho. RESULTS The fentanyl consumption (µg/kg/h) was less with scalp block when compared to incision-site infiltration (median [interquartile range]; 1.04 [0.92-1.34] vs. 1.34 [1.18-1.59], P=0.001). Postoperative pain scores were similar [median (interquartile range); 1.5 (0-4) vs. 3 (0-4), P=0.840]. No correlation was observed between postoperative NRS Score and ANI (correlation coefficient = 0.072; P=0.617). CONCLUSIONS ANI-guided analgesic administration during craniotomy demonstrated lower intra-operative fentanyl consumption in patients receiving scalp block as compared to incision-site local anesthetic infiltration. No correlation was seen between postoperative NRS and ANI.
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Affiliation(s)
- Kaushic A Theerth
- Department of Neuroanaesthesia and Neurocritical Care, Rajagiri Hospital, Ernakulam, India
| | - Kamath Sriganesh
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, India -
| | - K Madhusudan Reddy
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Dhritiman Chakrabarti
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, India
| | - Ganne S Umamaheswara Rao
- Department of Neuroanaesthesia and Neurocritical Care, National Institute of Mental Health and Neurosciences, Bengaluru, India
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