Effects of open endotracheal suction on lung volume in infants receiving HFOV

Abstract

Objective: To describe the pattern and magnitude of lung volume change during open endotracheal tube (ETT) suction in infants receiving high-frequency oscillatory ventilation (HFOV). Design: Prospective observational clinical study. Setting: Tertiary neonatal intensive care unit. Patients and participants: Seven intubated and muscle-relaxed newborn infants receiving HFOV. Interventions: Open ETT suction was performed for 6 s at -100 mmHg using a 6-F catheter passed to the ETT tip after disconnection from HFOV. The HFOV was then recommenced at the same settings as prior to ETT suction. Measurements and results: Change in lung volume (ΔV L) referenced to baseline lung volume before suction was..