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김대수(Dae Soo Kim),최두홍(Doo Hong Choi),이광희(Kwang Hee Lee),곽준구(Jun Gu Kwack),김성구(Sung Gu Kim),권영주(Young Joo Kwon) 대한내과학회 1990 대한내과학회지 Vol.39 No.1
N/A To test the applicability of Doppler echocardiography in the evaluation of prosthetic valve function, 22 patients in whom the prosthetic valve had been replaced in the mitral and aortic position were examined. The results were as follows: 1) For mitral prosthesis, peak velocity was 155.4±34.90cm/sec, the peak pressure gradient was 9.6±3.40 mmHg, and the mean pressure gradient was 4.0±2.19 mmHg. The prosthctic mitral valve area calculated by the pressure half time was 2.0+ 0.79 cm. 2) For aortic prosthesis, peak velocity was 200.0±38.33cm/sec, the peak pressure gradient was 16.6±5.65 mmHg, and the mean pressure gradient was 8.12±2.27 mmHg. 3) Mild mitral regurgitation was detected in one patient of mitral valve replacement, and aortic regurgitation was detected in four patients of aortic valve replacement.