PAKISTAN ARMED FORCES
MEDICAL JOURNAL (Category Y)

A Journal of Army Medical & Dental Corps

Being published since 1956

ISSN (online) 2411-8842
ISSN (print) 0030-9648

VOL 68, No. 5, OCTOBER 2018

FREQUENCY OF DIFFICULT INTUBATION IN OBESE PATIENTS WITH NECK CIRCUMFERENCE TO THYROMENTAL DISTANCE RATIO ≥ 5.0

Kamil Hussain Qureshi, Naveed Masood, Usman Ejaz Malik, Syed Fazal-e-Karim Faisal Kundi

Abstract

Objective: To determine the frequency of difficult intubation in obese patients with neck circumference to thyromental distance ratio (NC/TM) ≥5.0.
Study Design: Cross sectional study.
Place and Duration of Study: Department of Anaesthesia, Forward Treatment Centre, Kel (Azad Kashmir) and Combined Military Hospital (CMH) Malir. Six months, from Jun 2015 to Nov 2015.
Material and Methods: A total of 94 patients between the ages of 18 and 50 years with body mass index (BMI) ≥27.5 kg/m2 and NC/TM ≥5.0 who received general anesthesia requiring tracheal intubation for elective surgery (Orthopaedic, General Sugery, Urology & Gynaecology) were included in the study. Patients were induced general anaesthesia and orotracheal intubation was done by anaesthetist with at least 1 year experience. Number of intubation attempts were recorded in each patient. More than 3 attempts were considered difficult intubation.
Results: Eighty two (87.2%) out of 94 obese patients with BMI ≥27.5 kg/m2 and NC/TM ≥5 had difficult intubation.
Conclusion: The NC/TM ≥5 was found good predictor for difficult intubation in obese patients.

Keywords : Difficult intubation, Neck circumference to thyromental distance ratio, Obese.



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