Clinical study of real-time three-dimensional echocardiography combined with radionuclide imaging to evaluate changes in cardiac function and synchronization before and after cardiac rehabilitation in patients with acute myocardial infarction.

OBJECTIVE

This research aimed to unveil the effects of real-time three-dimensional echocardiography (RT-3DE) combined with radionuclide imaging to evaluate changes in cardiac function and synchronization before and after cardiac rehabilitation in patients with acute myocardial infarction (AMI).

METHODS

RT-3DE and radionuclide imaging were performed after PCI (pre-rehabilitation) and the 8-week follow-up visit (post-rehabilitation). Relevant data were collected: heart rate (HR), left ventricular (LV) end-systolic volume (LVESV), LV end-diastolic volume (LVEDV), LV ejection fraction (LVEF), LV 16-segment maximum difference in time to minimum systolic volume (Tmsv-16-Dif), LV 16-segment standard deviation of time to minimum systolic volume (Tmsv-16-SD), Tmsv 16-Dif % and Tmsv 16-SD %, summed Stress Score (SSS), Summed Rest Score (SRS), and SDS (SRS-SSS).

RESULTS

At the 8-week follow-up after PCI, HR, LVEDV, LVESV, Tmsv-16-Dif, Tmsv-16-SD, Tmsv-16-Dif%, Tmsv-16-SD%, SSS, SRS, and SDS in the rehabilitation group were lower than those in the control group; LVEF in the rehabilitation group was higher than the control group.

CONCLUSION

RT-3DE and radionuclide imaging can be used as a follow-up tool for evaluating LV function and synchronization changes after cardiac rehabilitation in patients with AMI undergoing PCI.