Impact of Inspiratory Muscle Training on Weaning Parameters in Prolonged Ventilator-Dependent Patients: A Preliminary Study. (July 2022)

• Record Type: Journal Article
• Authors: Chang, Hsiao-Yun; Hsiao, Hsiang-Chun; Chang, Hwai-Luh
• Is Part Of: SAGE open nursing. Volume 8(2022)
• Publication Date: 2022-07
• Subjects: Prolonged mechanical ventilation -- inspiratory muscle training -- ventilator trigger sensitivity -- weaning parameters -- ventilator-dependent patient; Nursing -- Periodicals; 610.7305
• DOI: 10.1177/23779608221111717
• Languages: English
• ISSNs: 2377-9608

Abstract

Introduction: Patients require prolonged mechanical ventilation to overcome respiratory failure in the chronic respiratory care ward; however, how to facilitate ventilator weaning using a nurse-led strategy is limited. Objectives: This study aimed to examine the impact of adjusting ventilator trigger sensitivity as inspiratory muscle training on weaning parameters in patients with prolonged ventilator dependence. Methods: Multiple pre-test–post-test with a non-equivalent control group design was conducted at a chronic respiratory care ward in southern Taiwan. A convenience sampling method was used to recruit patients who received prolonged mechanical ventilation for more than 21 days into control ( n = 20) and intervention groups ( n = 22). Adjustment of ventilator trigger sensitivity started from 10% of the initial maximum inspiratory pressure and increased to 40% after a training period of six weeks. The weaning parameters were collected for pre-test and multiple post-tests, and statistical analysis of treatment effects was performed using the generalized estimating equation. Results: Magnitude of weaning parameters was significantly higher in the intervention group after the six-week training, including maximum inspiratory pressure, rapid shallow breathing index, tidal volume, and ratio of arterial-to-inspired oxygen. Conclusion: Adjustment of ventilator trigger sensitivity as inspiratory muscle training can help prolonged ventilator-dependent patients improve their respiratory muscle strength, breathing patterns, and oxygenation.