Figure 1.

Summary flow diagram of patients (Group B, patients who underwent AVR with biological prosthesis; Group M, patients who underwent AVR with mechanical prosthesis). AMI, acute myocardial infarction; AR, aortic regurgitation; AS, aortic stenosis; AVR, aortic valve replacement; BSA, body surface area; CAD, coronary artery disease; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; CRF, chronic renal failure; DM, diabetes mellitus; HTN, hypertension; MR, mitral regurgitation; MS, mitral stenosis; PAOD, peripheral arterial occlusive disease; TR, tricuspid regurgitation