Effects of Open Endotracheal Suction on Lung Volume in Infants Receiving HFOV

Overview

Journal Intensive Care Med

Specialty Critical Care

Date 2007 Mar 3

PMID 17333119

Citations 11

Authors

D G Tingay

B Copnell

J F Mills

C J Morley

P A Dargaville

Affiliations

Soon will be listed here.

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 (DeltaV (L)) referenced to baseline lung volume before suction was measured with a calibrated respiratory inductive plethysmography recording from 30 s before until 60 s after ETT suction. In all infants ETT suction resulted in significant loss of lung volume. The mean DeltaV (L) during suctioning was -13 ml/kg (SD 4 ml/kg) (p<0.0001 vs. baseline, repeated-measures ANOVA), with a mean 76.5% (SD 14.1%) of this volume loss being related to circuit disconnection. After recommencing HFOV lung volume was rapidly regained with mean DeltaV (L) at 60 s being 1 ml/kg (SD 4 ml/kg) below baseline (p>0.05, Tukey post-test).

Conclusions: Open ETT suction caused a significant but transient loss of lung volume in muscle-relaxed newborn infants receiving HFOV.

Citing Articles

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