After mitral valve surgery, does the heart always shrink in size?

In general, whether the heart will shrink after mitral valve surgery depends on the individual patient's condition and requires comprehensive evaluation. If the patient's condition is mild, the heart typically does not shrink; however, if the condition is severe, shrinkage may occur. The specific analysis is as follows:

1. No shrinkage

The mitral valve, attached to the left fibrous atrioventricular ring, is formed by folds of the endocardium. Under normal circumstances, after successful mitral valve surgery that restores proper valve function, the size and shape of the heart usually gradually return to normal. The primary goal of mitral valve surgery is to repair or replace the diseased mitral valve to improve the heart's pumping function. During surgery, surgeons strive to preserve the integrity and structure of the heart, including its size and shape. Therefore, if a patient has only mild mitral valve stenosis, the heart will not shrink after surgery but will instead gradually return to its normal state.

2. Shrinkage may occur

It should be noted that after mitral valve surgery, patients must control their physical activity according to their physical capacity. They should avoid staying up late and unhealthy lifestyle habits, quit smoking and drinking, and maintain a light, nutritious diet with high-quality protein. If the patient fails to properly manage their condition, leading to severe mitral valve stenosis, it may result in left ventricular muscle atrophy and consequently cause the heart to shrink.

If a patient experiences any discomfort, they should promptly seek medical attention at a hospital to avoid delays in treatment.