Ratio of height-to-thyromental distance and ratio of height-to-sternomental distance as predictors of laryngoscopic grade in children

Swarup Ray, Shwethapriya Rao, Jasvinder Kaur, Yogesh K. Gaude

Research output: Contribution to journalArticle

Abstract

Background and Aims: Failure to secure the airway is an important cause of morbidity and mortality in children. Children are often uncooperative for routine examination and pose problems for obtaining external measurements. We aimed to evaluate ratio of height-to-thyromental distance (RHTMD) and ratio of height-to-sternomental distance (RHSMD) as predictors of laryngoscopic grade in children aged 1-12 years. Material and Methods: This study was an observational study conducted in children aged between 1 and 12 years scheduled for elective surgery under general anesthesia. Children unable to stand, having limited mouth opening/neck mobility, cleft palate or with midline neck masses were excluded. Weight, height, and thyromental and sternomental distances were measured preoperatively. Following induction of anesthesia and full-muscle relaxation, laryngoscopy was performed and Cormack-Lehane view with Cook's modification was noted. Receiver operating characteristic (ROC) curve analysis using RHTMD and RHSMD was performed for predicting poor laryngoscopic view. Results: A total of 138 children with mean age of 6.6 ± 3.4, RHTMD of 17.7 ± 2.1, and RHSMD of 10.0 ± 1.0 were included. No Grade 3 or 4 laryngoscopic views were obtained. ROC curve analysis was done for predicting 2b view (restricted), incidence of which was 10.1%. RHTMD was a better predictor of 2b laryngoscopic view with an area under curve (AUC) of 0.792 compared to RHSMD (AUC = 0.463). Conclusions: In children aged 1-12 years, RHTMD is a better predictor of restricted view compared to RHSMD.

Original languageEnglish
Pages (from-to)68-72
Number of pages5
JournalJournal of Anaesthesiology Clinical Pharmacology
Volume34
Issue number1
DOIs
Publication statusPublished - 01-01-2018
Externally publishedYes

Fingerprint

ROC Curve
Area Under Curve
Neck
Child Mortality
Laryngoscopy
Muscle Relaxation
Cleft Palate
General Anesthesia
Observational Studies
Mouth
Anesthesia
Morbidity
Weights and Measures
Incidence

All Science Journal Classification (ASJC) codes

  • Pharmacology, Toxicology and Pharmaceutics(all)
  • Pharmacology (medical)
  • Anesthesiology and Pain Medicine

Cite this

@article{fc7f7ec97495480f9dc96be830b7f27a,
title = "Ratio of height-to-thyromental distance and ratio of height-to-sternomental distance as predictors of laryngoscopic grade in children",
abstract = "Background and Aims: Failure to secure the airway is an important cause of morbidity and mortality in children. Children are often uncooperative for routine examination and pose problems for obtaining external measurements. We aimed to evaluate ratio of height-to-thyromental distance (RHTMD) and ratio of height-to-sternomental distance (RHSMD) as predictors of laryngoscopic grade in children aged 1-12 years. Material and Methods: This study was an observational study conducted in children aged between 1 and 12 years scheduled for elective surgery under general anesthesia. Children unable to stand, having limited mouth opening/neck mobility, cleft palate or with midline neck masses were excluded. Weight, height, and thyromental and sternomental distances were measured preoperatively. Following induction of anesthesia and full-muscle relaxation, laryngoscopy was performed and Cormack-Lehane view with Cook's modification was noted. Receiver operating characteristic (ROC) curve analysis using RHTMD and RHSMD was performed for predicting poor laryngoscopic view. Results: A total of 138 children with mean age of 6.6 ± 3.4, RHTMD of 17.7 ± 2.1, and RHSMD of 10.0 ± 1.0 were included. No Grade 3 or 4 laryngoscopic views were obtained. ROC curve analysis was done for predicting 2b view (restricted), incidence of which was 10.1{\%}. RHTMD was a better predictor of 2b laryngoscopic view with an area under curve (AUC) of 0.792 compared to RHSMD (AUC = 0.463). Conclusions: In children aged 1-12 years, RHTMD is a better predictor of restricted view compared to RHSMD.",
author = "Swarup Ray and Shwethapriya Rao and Jasvinder Kaur and Gaude, {Yogesh K.}",
year = "2018",
month = "1",
day = "1",
doi = "10.4103/joacp.JOACP_135_16",
language = "English",
volume = "34",
pages = "68--72",
journal = "Journal of Anaesthesiology Clinical Pharmacology",
issn = "0970-9185",
publisher = "Journal of Anaesthesiology Clinical Pharmacology",
number = "1",

}

Ratio of height-to-thyromental distance and ratio of height-to-sternomental distance as predictors of laryngoscopic grade in children. / Ray, Swarup; Rao, Shwethapriya; Kaur, Jasvinder; Gaude, Yogesh K.

In: Journal of Anaesthesiology Clinical Pharmacology, Vol. 34, No. 1, 01.01.2018, p. 68-72.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ratio of height-to-thyromental distance and ratio of height-to-sternomental distance as predictors of laryngoscopic grade in children

AU - Ray, Swarup

AU - Rao, Shwethapriya

AU - Kaur, Jasvinder

AU - Gaude, Yogesh K.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Background and Aims: Failure to secure the airway is an important cause of morbidity and mortality in children. Children are often uncooperative for routine examination and pose problems for obtaining external measurements. We aimed to evaluate ratio of height-to-thyromental distance (RHTMD) and ratio of height-to-sternomental distance (RHSMD) as predictors of laryngoscopic grade in children aged 1-12 years. Material and Methods: This study was an observational study conducted in children aged between 1 and 12 years scheduled for elective surgery under general anesthesia. Children unable to stand, having limited mouth opening/neck mobility, cleft palate or with midline neck masses were excluded. Weight, height, and thyromental and sternomental distances were measured preoperatively. Following induction of anesthesia and full-muscle relaxation, laryngoscopy was performed and Cormack-Lehane view with Cook's modification was noted. Receiver operating characteristic (ROC) curve analysis using RHTMD and RHSMD was performed for predicting poor laryngoscopic view. Results: A total of 138 children with mean age of 6.6 ± 3.4, RHTMD of 17.7 ± 2.1, and RHSMD of 10.0 ± 1.0 were included. No Grade 3 or 4 laryngoscopic views were obtained. ROC curve analysis was done for predicting 2b view (restricted), incidence of which was 10.1%. RHTMD was a better predictor of 2b laryngoscopic view with an area under curve (AUC) of 0.792 compared to RHSMD (AUC = 0.463). Conclusions: In children aged 1-12 years, RHTMD is a better predictor of restricted view compared to RHSMD.

AB - Background and Aims: Failure to secure the airway is an important cause of morbidity and mortality in children. Children are often uncooperative for routine examination and pose problems for obtaining external measurements. We aimed to evaluate ratio of height-to-thyromental distance (RHTMD) and ratio of height-to-sternomental distance (RHSMD) as predictors of laryngoscopic grade in children aged 1-12 years. Material and Methods: This study was an observational study conducted in children aged between 1 and 12 years scheduled for elective surgery under general anesthesia. Children unable to stand, having limited mouth opening/neck mobility, cleft palate or with midline neck masses were excluded. Weight, height, and thyromental and sternomental distances were measured preoperatively. Following induction of anesthesia and full-muscle relaxation, laryngoscopy was performed and Cormack-Lehane view with Cook's modification was noted. Receiver operating characteristic (ROC) curve analysis using RHTMD and RHSMD was performed for predicting poor laryngoscopic view. Results: A total of 138 children with mean age of 6.6 ± 3.4, RHTMD of 17.7 ± 2.1, and RHSMD of 10.0 ± 1.0 were included. No Grade 3 or 4 laryngoscopic views were obtained. ROC curve analysis was done for predicting 2b view (restricted), incidence of which was 10.1%. RHTMD was a better predictor of 2b laryngoscopic view with an area under curve (AUC) of 0.792 compared to RHSMD (AUC = 0.463). Conclusions: In children aged 1-12 years, RHTMD is a better predictor of restricted view compared to RHSMD.

UR - http://www.scopus.com/inward/record.url?scp=85044254437&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044254437&partnerID=8YFLogxK

U2 - 10.4103/joacp.JOACP_135_16

DO - 10.4103/joacp.JOACP_135_16

M3 - Article

VL - 34

SP - 68

EP - 72

JO - Journal of Anaesthesiology Clinical Pharmacology

JF - Journal of Anaesthesiology Clinical Pharmacology

SN - 0970-9185

IS - 1

ER -