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Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study

BACKGROUND AND AIMS: An objective understanding of pain guides the effectiveness of various postoperative pain management strategies. The measurement of pain by the visual analogue scale (VAS) is dependent on the individual’s cognitive and emotional ability. Pupillary dilatation has been successfull...

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Autores principales: Shukla, Bharat Bhushan, Malviya, Deepak, Kumar, Sumit, Misra, Shilpi, Kumar, Suraj, Parashar, Samiksha
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Wolters Kluwer - Medknow 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10132682/
https://www.ncbi.nlm.nih.gov/pubmed/37122942
http://dx.doi.org/10.4103/ija.ija_1045_21
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author Shukla, Bharat Bhushan
Malviya, Deepak
Kumar, Sumit
Misra, Shilpi
Kumar, Suraj
Parashar, Samiksha
author_facet Shukla, Bharat Bhushan
Malviya, Deepak
Kumar, Sumit
Misra, Shilpi
Kumar, Suraj
Parashar, Samiksha
author_sort Shukla, Bharat Bhushan
collection PubMed
description BACKGROUND AND AIMS: An objective understanding of pain guides the effectiveness of various postoperative pain management strategies. The measurement of pain by the visual analogue scale (VAS) is dependent on the individual’s cognitive and emotional ability. Pupillary dilatation has been successfully used to measure pain in quantitative terms. The present study was conducted to study the correlation between VAS and pupillary diameter in the evaluation of postoperative pain. METHODS: This observational study was carried out on 85 patients 18–65 years of age, scheduled for lower abdominal surgical procedures under general anaesthesia. Postoperative pain assessment was done using the VAS at 6 h, 12 h, 18 h and 24 h. In addition, the pupillary diameter of both eyes was measured simultaneously. Paired t-test and analysis of variance (ANOVA) were used to compare the data, and Pearson’s correlation coefficient was calculated to assess the bivariate correlation between VAS score and pupillary diameter. RESULTS: Mean ± standard deviation (SD) of VAS scores at baseline, 6 h, 12 h, 18 h and 24 h postoperatively were 0, 4.88 ± 0.88, 3.39 ± 0.86, 2.19 ± 0.66 and 1.40 ± 0.49, respectively. Mean change was significant at all time intervals (P < 0.001). The mean ± SD change in average pupillary diameter was 0.59 ± 0.64, 0.44 ± 0.54, 0.22 ± 0.34 and 0.07 ± 0.22 mm, respectively, showing a significant change from baseline (P < 0.05). On overall evaluation, mean pupillary diameter showed a significant incremental trend with an increasing VAS score (P < 0.001). CONCLUSION: Change in pupillary diameter correlated well with the pain scores (VAS) and thus pupillary diameter can be chosen as an objective measurement of postoperative pain severity.
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spelling pubmed-101326822023-04-27 Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study Shukla, Bharat Bhushan Malviya, Deepak Kumar, Sumit Misra, Shilpi Kumar, Suraj Parashar, Samiksha Indian J Anaesth Original Article BACKGROUND AND AIMS: An objective understanding of pain guides the effectiveness of various postoperative pain management strategies. The measurement of pain by the visual analogue scale (VAS) is dependent on the individual’s cognitive and emotional ability. Pupillary dilatation has been successfully used to measure pain in quantitative terms. The present study was conducted to study the correlation between VAS and pupillary diameter in the evaluation of postoperative pain. METHODS: This observational study was carried out on 85 patients 18–65 years of age, scheduled for lower abdominal surgical procedures under general anaesthesia. Postoperative pain assessment was done using the VAS at 6 h, 12 h, 18 h and 24 h. In addition, the pupillary diameter of both eyes was measured simultaneously. Paired t-test and analysis of variance (ANOVA) were used to compare the data, and Pearson’s correlation coefficient was calculated to assess the bivariate correlation between VAS score and pupillary diameter. RESULTS: Mean ± standard deviation (SD) of VAS scores at baseline, 6 h, 12 h, 18 h and 24 h postoperatively were 0, 4.88 ± 0.88, 3.39 ± 0.86, 2.19 ± 0.66 and 1.40 ± 0.49, respectively. Mean change was significant at all time intervals (P < 0.001). The mean ± SD change in average pupillary diameter was 0.59 ± 0.64, 0.44 ± 0.54, 0.22 ± 0.34 and 0.07 ± 0.22 mm, respectively, showing a significant change from baseline (P < 0.05). On overall evaluation, mean pupillary diameter showed a significant incremental trend with an increasing VAS score (P < 0.001). CONCLUSION: Change in pupillary diameter correlated well with the pain scores (VAS) and thus pupillary diameter can be chosen as an objective measurement of postoperative pain severity. Wolters Kluwer - Medknow 2023-02 2023-02-22 /pmc/articles/PMC10132682/ /pubmed/37122942 http://dx.doi.org/10.4103/ija.ija_1045_21 Text en Copyright: © 2023 Indian Journal of Anaesthesia https://creativecommons.org/licenses/by-nc-sa/4.0/This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Shukla, Bharat Bhushan
Malviya, Deepak
Kumar, Sumit
Misra, Shilpi
Kumar, Suraj
Parashar, Samiksha
Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study
title Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study
title_full Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study
title_fullStr Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study
title_full_unstemmed Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study
title_short Comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: An observational study
title_sort comparative evaluation of visual analogue scale and pupillary diameter for post-operative pain: an observational study
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10132682/
https://www.ncbi.nlm.nih.gov/pubmed/37122942
http://dx.doi.org/10.4103/ija.ija_1045_21
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