| Background:Acute myocardial infarction(AMI)has been characterized by high morbidity and mortality in recent years.With the development of first aid procedures and percutaneous coronary intervention(PCI),more patients are treated in time,resulting in the decreasing mortality rate year by year.However,cardiac function is severely impaired after myocardial infarction,so patients are always limited in the exercise capacity.Studies have shown that cardiac rehabilitation can improve cardiac function in left ventricular ejection fraction,6-minute walking test,left ventricular end-diastolic volume,blood lipids,blood pressure and many other aspects,but there is still no conclusive evidence on cardiopulmonary exercise.Objective:Through randomized controlled trials,to explore the impact of cardiac rehabilitation exercise on cardiopulmonary function after PCI in patients with AMI,and provide evidence for the efficacy and necessity of cardiac rehabilitation.Methods:From January 2017 to October 2017,60 AMI patients,accepted PCI at China-Japan Union Hospital,were selected according to a certain standard,and randomly divided into two groups,There are 30 patients in both the experimental group and the control group.Patients in the control group was given routine conventional treatment after PCI,including the control of risk factors and routine drug treatment.On the basis of the former,patients in the experimental group also received individualized dynamic stretching cardiac rehabilitation training that was guided by rehabilitative physicians and therapists under the supervision of the electrocardiograph monitor.The therapy was repeated every 10 days for a total of 4 cycles.We performed initial and final rehabilitative evaluation on both groups,to analyze the improvement of max load,VO2max/kg,VO2max/HR,METs and AT of the two groups,before and after the experiment,and compare the differences of the indexes between the two groups.Results:After therapy,patients in the experimental group showed a statistically significant increase in the max load(94.65±24.89 W,102.6±26.74 W,p<0.05),VO2max/kg(15.87±3.91 ml/min/kg,17.69±3.81 ml/min/kg,p < 0.05),VO2max/HR(7.28±1.49 ml/beat,9.02±2.33 ml/beat,p < 0.05),METs(7.28±1.49,9.02±2.33,p<0.05)and AT(9.18±2.24,13.3±1.23,p<0.05),and patients in the control group showed a statistically significant increase in the VO2max/kg(14.58±3.51ml/min/kg,15.23±3.87ml/min/kg,p<0.05),METs(6.33±1.28,6.79±1.53,p<0.05)and AT(9.24±1.03,10.36±1.17,p<0.05).Furthermore,the max load(in experimental group7.95±6.57 W,in control group-0.10±6.37 W,p < 0.05),VO2max/kg(in experimental group1.92±1.23 ml/min/kg,in control group0.66±0.83 ml/min/kg,p<0.05),VO2max/HR(in experimental group0.88±0.85 ml/beat,in control group0±0.98ml/beat,p<0.05),METs(in experimental group0.68±0.50,in control group0.25±0.29,p<0.05)and AT(in experimental group2.74±2.94,in control group1.75±2.25,p<0.05)displayed statistically significant improvement in the experimental group,compared with the control.Four patients occurred atrial premature beats and seven patients occurred cardiac fluster in experimental group.They recovered from symptoms after rest and could continue rehabilitation.Patients in the experimental group showed a statistically significant decrease in average daily smoking(17.21±4.29,8.29±2.77,p<0.05).Conclusion:1?Conventional treatment combined with cardiac rehabilitation after PCI is superior to simply conventional treatment in the recovery of cardiopulmonary exercise function;2?Cardiac rehabilitation is safe and effective for AMI patients after PCI operations;3?Cardiac rehabilitation helps reduce the amount of smoking for AMI patients after PCI operations. |
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