Trial of Weaning by Synchronized Ventilation

Status Completed

Clinical Trial Summary

During assist control ventilation and pressure support ventilation (PSV), the start of ventilator inflation is determined by the start of the infant's inspiratory effort. During PSV, termination of inflation is determined by the level of the infant's inspiratory flow. In a randomized trial, no significant differences were found between assist control and pressure support ventilation with regard to the duration of weaning, time to successful extubation, work of breathing, rate of asynchrony and level of respiratory muscle strength.

Clinical Trial Description

Objectives: To test the hypothesis that the duration of weaning would be shorter using assist control ventilation (ACV) rather than pressure support ventilation (PSV). To determine if any differences in the duration of weaning reflected differences in the work of breathing, the rate of asynchrony or the level of respiratory muscle strength.

Patients and methods: Thirty-six infants, median gestational age 29 (range 24 to 39) weeks, were randomized to weaning by either ACV or PSV. The duration of weaning was recorded. At baseline (study entry), 24 hours after entering the study and immediately prior to extubation, the work of breathing was assessed by measuring the transdiaphragmatic pressure time product (PTPdi), thoracoabdominal asynchrony (TAA) was assessed using respiratory inductance plethysmography and respiratory muscle strength measured by recording the maximal inspiratory pressure produced during an airway occlusion during crying (Pimax). Immediately prior to extubation, the level of active expiration was also assessed. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01376544
Study type	Interventional
Source	King's College London
Contact
Status	Completed
Phase	N/A
Start date	August 2008
Completion date	August 2010

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