Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population

Background: Determining the appropriate size of an endotracheal tube (ETT) in infants and children remains a challenge for anesthesiologists. We conducted this study to assess the accuracy of middle finger length (MFL) in predicting the appropriate ETT size for pediatric patients in comparison with...

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Main Authors: Rama Rani Krishna Bhat, Ramya Lakshmi Kamlekar, Malavika Kulkarni
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2022-01-01
Series:The Indian Anaesthetists' Forum
Subjects:
Online Access:http://www.theiaforum.org/article.asp?issn=2589-7934;year=2022;volume=23;issue=2;spage=105;epage=110;aulast=Krishna
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author Rama Rani Krishna Bhat
Ramya Lakshmi Kamlekar
Malavika Kulkarni
author_facet Rama Rani Krishna Bhat
Ramya Lakshmi Kamlekar
Malavika Kulkarni
author_sort Rama Rani Krishna Bhat
collection DOAJ
description Background: Determining the appropriate size of an endotracheal tube (ETT) in infants and children remains a challenge for anesthesiologists. We conducted this study to assess the accuracy of middle finger length (MFL) in predicting the appropriate ETT size for pediatric patients in comparison with the age-based estimation and derive a formula based on MFL for the estimation of ETT size. Materials and Methods: In the study, South Indian children 1–10 years of age, requiring general anesthesia were intubated by consultant anesthesiologists based on their discretion with an appropriately sized ETT. Subsequently, the MFL of the children was measured and tracheal tube size calculated from the age-based formula was also noted. The actual size of the ETT inserted was compared with the MFL and age-based formula using Pearson's correlation. Results: In children between 1 and 10 years of age, the age-based formulae (ABF) was found to correlate with ETT estimated with the correlation coefficient (r = 0.885; P < 0.001) and MFL (r = 0.783 and P < 0.001). ABF showed a stronger correlation with the ETT inserted compared to the MFL, nevertheless, we were able to arrive at a formula to predict tracheal tube size based on MFL: ETT ID (mm) =1.1+ (0.7 × MFL [cm]). Conclusion: Although age-based Cole's and Motoyama's formulae are better predictors of pediatric ETT size, MFL can still be used to predict the tube size in cases when age and weight are unknown.
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spelling doaj.art-fc272947441d4141ba35944a2ed651022022-12-22T03:41:42ZengWolters Kluwer Medknow PublicationsThe Indian Anaesthetists' Forum0973-03112022-01-0123210511010.4103/TheIAForum.TheIAForum_40_22Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian populationRama Rani Krishna BhatRamya Lakshmi KamlekarMalavika KulkarniBackground: Determining the appropriate size of an endotracheal tube (ETT) in infants and children remains a challenge for anesthesiologists. We conducted this study to assess the accuracy of middle finger length (MFL) in predicting the appropriate ETT size for pediatric patients in comparison with the age-based estimation and derive a formula based on MFL for the estimation of ETT size. Materials and Methods: In the study, South Indian children 1–10 years of age, requiring general anesthesia were intubated by consultant anesthesiologists based on their discretion with an appropriately sized ETT. Subsequently, the MFL of the children was measured and tracheal tube size calculated from the age-based formula was also noted. The actual size of the ETT inserted was compared with the MFL and age-based formula using Pearson's correlation. Results: In children between 1 and 10 years of age, the age-based formulae (ABF) was found to correlate with ETT estimated with the correlation coefficient (r = 0.885; P < 0.001) and MFL (r = 0.783 and P < 0.001). ABF showed a stronger correlation with the ETT inserted compared to the MFL, nevertheless, we were able to arrive at a formula to predict tracheal tube size based on MFL: ETT ID (mm) =1.1+ (0.7 × MFL [cm]). Conclusion: Although age-based Cole's and Motoyama's formulae are better predictors of pediatric ETT size, MFL can still be used to predict the tube size in cases when age and weight are unknown.http://www.theiaforum.org/article.asp?issn=2589-7934;year=2022;volume=23;issue=2;spage=105;epage=110;aulast=Krishnaage-based formulaendotracheal tubemiddle finger lengthpediatric
spellingShingle Rama Rani Krishna Bhat
Ramya Lakshmi Kamlekar
Malavika Kulkarni
Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population
The Indian Anaesthetists' Forum
age-based formula
endotracheal tube
middle finger length
pediatric
title Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population
title_full Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population
title_fullStr Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population
title_full_unstemmed Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population
title_short Prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age-based formula in South Indian population
title_sort prediction of endotracheal tube size for pediatric patients from the length of the middle finger in comparison with standard age based formula in south indian population
topic age-based formula
endotracheal tube
middle finger length
pediatric
url http://www.theiaforum.org/article.asp?issn=2589-7934;year=2022;volume=23;issue=2;spage=105;epage=110;aulast=Krishna
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AT ramyalakshmikamlekar predictionofendotrachealtubesizeforpediatricpatientsfromthelengthofthemiddlefingerincomparisonwithstandardagebasedformulainsouthindianpopulation
AT malavikakulkarni predictionofendotrachealtubesizeforpediatricpatientsfromthelengthofthemiddlefingerincomparisonwithstandardagebasedformulainsouthindianpopulation