Effects of Inspiratory Muscle Training on Weaning for Ventilator-Dependent Patients

• Main Authors: HU SHU CHIN, 胡淑琴
• Other Authors: LEE RU PING
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/79029946822037667550

碩士 === 慈濟大學 === 護理學研究所 === 93 === The purpose of this study was to investigate the effects of pressure threshold inspiratory muscle trainer on weaning for ventilator-dependent patients. We conducted an intervention-based study at a regional hospital in Eastern Taiwan. A training program was designed to improve the strength and endurance of the inspiratory muscle, with an aim to assist weaning from the ventilator. The study population included patients with tracheostomy who were dependent on mechanical ventilators for over 21 days without other medical complication. Convenience sampling was used and overall 30 subjects were recruited. The study subjects were then randomly assigned to either intervention or control groups. Patients in both groups received routine weaning training in the study hospital. Patients in the intervention group were put on an extra thirty-minutes inspiratory muscle training for six days in each week. The duration of the training protocol was four weeks. All data were analyzed by Statistical Package for the Social Science (SPSS) version 12.0. Descriptive statistics, t-test analysis, paired t-test, Chi-square analysis, and analysis of Covariance were reported. We discovered significant improvement of the maximal peak inspiratory pressure (p< .05) and the inspiratory muscle endurance (p< .05) in the intervention group, as compared to the control group. There was no statistically significant difference in the mechanical ventilator weaning rate between these two groups. Small sample size, advanced age and disease severity, long duration of preceding mechanical ventilation, and short duration of the training protocol were possible alternative explanations for the similar weaning rate between both groups. However, the totally weaning rate after our training protocol was higher than before, beside, patients who were success weaning had higher inspiratory muscle power and endurance than that in failure group. Given the positive findings in our study, we conclude that the inspiratory muscle strength training is a promising tool on weaning for ventilator-dependent patients.