Abstract
Abstract Background Coronary heart disease (CHD) is one of the most common forms of heart disease. It affects the heart by restricting or blocking the flow of blood around it. This can lead to anginal pain or myocardial infarction. Exercisebased cardiac rehabilitation aims to restore people with CHD to health through combination of exercise with education and psychological support. Aim of the Work to evaluate left atrial function in ischemic patients before and after cardiac rehabilitation using speckles tracking. Patients and Methods The study included 60 individuals who were recruited from Ain Shams University hospital. All patients were recruited from the cardiac rehabilitation unit. These patients had recent MI that was successfully revascularized one month before inclusion. They were recruited in the period between December 2019, and complete in December 2020, Echocardiography (including 2D STE for assessment of LA function) was performed at baseline, and after a 3-month follow-up for all patients. Results This result reveal that CR could improve LV global and regional function and should be used routinely as a part of management of patient after acute myocardial infarction, also LA function improved Regarding LA diameter (considered as the standard single plane dimension of left atrium) dropped from 36.93 ± 4.60 mm to 33.85 ± 4.86 after CR showing highly significant change, Left atrial volume index (LAVI) dropped from 20.63 ± 8.05 mL/m2 to 17.40 ± 6.37, after CR, Showing highly significant changes, Peak atrial longitudinal strain mean value and systolic strain rate median, both improved significantly (p < 0.001) after cardiac rehabilitation, with the former increasing from 15.21 ± 5.49 cm/s to 20.69 ± 8.13 cm/s and the latter increasing from 0.4 (0.25 ‒ 0.75)s-1 to 0.65 (0.5 ‒ 1.1) s-1. after CR. Conclusion Speckle tracking imaging of left atrium has proved to be a feasible and reproducible tool for the assessment of left atrial mechanics. With significant improvement in left atrial function after 3 months of exercise training CR program.
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