Effect of Different Intensities of Respiratory Muscle Training Combined with"Seven-Step"Rehabilitation Raining on Pulmonary Function and Exercise Endurance in Elderly Patients with Acute Myocardial Infarction after PCI
Objective To investigate the effect of different intensities of respiratory muscle training(RMT)combined with"seven-step"rehabilitation training on pulmonary function and exercise endurance in elderly patients with acute myocardial infarction(AMI)after percutaneous coronary intervention(PCI).Methods A total of 90 elderly patients with AMI admitted to the Department of Cardiovascular Medicine of the Second Affiliated Hospital of Xi'an Jiaotong University from April 2022 to January 2024 were prospectively selected.Based on the preferences of the patients,they were divided into traditional group(n=25)and combined group(n=65).The combined group was further divided into low-intensity RMT group(n=32)and high-intensity RMT group(n=33)by random number table method.The traditional group underwent"seven-step"rehabilitation training,while the combined group received different intensities of RMT on the basis of the traditional group:the initial maximum inspiratory pressure(MIP)intensity of the low-intensity RMT group was set at 30％,with a weekly increment of 5％;the initial MIP intensity of the high-intensity RMT group was set at 60％,with a weekly increment of 5％.All three groups of patients were trained for 1 month.The pulmonary function indexes[forced vital capacity(FVC),forced expiratory volume in one second(FEV1)/FVC,maximal mid-expiratory flow(MMEF),MIP]before and after intervention,exercise endurance indexes[oxygen uptate per kilogram at anaerobic threshold(VO2@AT)and oxygen uptake efficiency slope(OUES)]after intervention,as well as the modified Medical Research Council(mMRC)scale score and Functional Independence Measure(FIM)score before and after intervention were compared among the three groups.Results After intervention,FVC and MIP in the low-intensity RMT group and the high-intensity RMT group were higher than those before intervention,and the MMEF in the three groups was higher than that before intervention,respectively(P＜0.05).After intervention,FVC and MIP were higher in the high-intensity RMT group than in the traditional group(P＜0.05).After intervention,VO2@AT in the high-intensity RMT group was higher than that in the traditional group,and OUES in the low-intensity RMT group and the high-intensity RMT group was higher than that in the traditional group(P＜0.05).After intervention,mMRC scale scores in the low-intensity RMT group and high-intensity RMT group were lower than those before intervention,and FIM scores were higher than those before intervention,respectively(P＜0.05).After intervention,FIM scores in the low-intensity RMT group and the high-intensity RMT group were higher than those in the traditional group(P＜0.05).Conclusion Low-intensity RMT combined with"seven-step"rehabilitation training can enhance exercise endurance and independence of life in elderly patients with AMI after PCI,and high-intensity RMT combined with"seven-step"rehabilitation training can enhance pulmonary function,exercise endurance and independence of life in elderly patients with AMI after PCI.
Myocardial infarctionAgedPercutaneous coronary interventionBreathing exercisesExercise therapyRespiratory function testsPhysical endurance
万方数据
