Journal article

Negative tracheal pressure during neonatal endotracheal suction

Nicholas J Kiraly, David G Tingay, John F Mills, Colin J Morley, Beverley Copnell

PEDIATRIC RESEARCH | INT PEDIATRIC RESEARCH FOUNDATION, INC | Published : 2008

Abstract

Endotracheal tube (ETT) suction is the most frequently performed invasive procedure in ventilated newborn infants and is associated with adverse effects related to negative tracheal pressure. We aimed to measure suction catheter gas flow and intratracheal pressure during ETT suction of a test lung and develop a mathematical model to predict tracheal pressure from catheter and ETT dimensions and applied pressure. Tracheal pressure and catheter flow were recorded during suction of ETT sizes 2.5-4.0 mm connected to a test lung with catheters 5-8 French Gauge and applied pressures of 80-200 mm Hg. The fraction of applied pressure transmitted to the trachea was calculated for each combination, an..

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