Frequency of correctly estimated size of ETT with new age base formula in children requiring general anaesthesia with ETT

Aim: to determine the frequency of correctly estimated size of tracheal tube (tt) with new age base formula (nabf) in children requiring general anaesthesia with endotracheal intubation. methods: this study was conducted in the department of anaesthesiology at shaikh zayed hospital lahore from 17 th december 2009 to 17th june 2010. sixty five children were included in this study who were fulfilling inclusion criteria. results: the mean standard deviation was 5.03±2.39 years. male to female ratio was 1.95:1. according to new age base formula 16 (25%) patients had 3.7-4mm diameter,28 (43%) patients had 4.1-5mm diameter and remaining 21 (32%) patients had >5mm diameter of endotracheal intubation tube. forty five (69%) patients were passed the correct tube size and 20 (31%) patients were passed the incorrect estimated prediction tube size. conclusion: it is concluded that new age base formula prevent morbidity secondary to airway injury,efforts should be directed to avoid re-intubation and tube changes in the concerned scenario.