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Subnormalization of left ventricular shape after successful coronary revascularization.
1Centre for Dialysis, Clinical Centre, Faculty of Medicine, Ljubljana, Slovenia. bojan.knap@mf.uni-lj.si
The Heart Surgery Forum
|November 15, 2005
Summary
Successful coronary artery bypass grafting (CABG) improves left ventricular size and shape, leading to subnormalization. These changes reflect enhanced cardiac function post-surgery and rehabilitation.
Area of Science:
- Cardiology
- Cardiac Surgery
- Echocardiography
Background:
- Left ventricular (LV) shape and size are assumed to change post-revascularization.
- LV geometry is thought to reflect cardiac function.
Purpose of the Study:
- To assess changes in LV size and shape after coronary artery bypass grafting (CABG).
- To correlate LV geometric changes with cardiac function post-CABG.
Main Methods:
- Echocardiography and Simpson's rule were employed.
- LV endocardial surface area and elongation were measured as shape indices.
- Evaluations were performed before and 1 year after successful CABG in 13 patients.
Main Results:
- Successful CABG led to an increase in LV size.
- The LV became less elongated after CABG, indicating a shift from concentric hypertrophy towards subnormalization.
- LV geometry normalized post-successful CABG and rehabilitation.
Conclusions:
- Subnormalization of LV size and shape is attributed to successful CABG and rehabilitation.
- Pre-operative LV condition may influence the extent of geometric changes observed after CABG.