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  • Title: [Mitral valve prolapse in patients with surgically-closed atrial septal defect].
    Author: Takahashi H, Sakamoto T, Hada Y, Amano K, Takenaka K, Hasegawa I, Suzuki J, Shiota T, Sugimoto T, Furuse A.
    Journal: J Cardiol; 1989 Sep; 19(3):893-900. PubMed ID: 2641782.
    Abstract:
    To evaluate the prevalence, causes and clinical significance of mitral valve prolapse (MVP) associated with surgically-closed atrial septal defect (ASD), 90 patients (M: 41, F: 49) were studied using two-dimensional and color-coded Doppler echocardiography. Among the 90 patients, preoperative echocardiograms were available in 27. MVP was found in 21 of the 27 patients (78%) preoperatively, but it was found in 59% (16/27) postoperatively. In total, MVP was detected in 50 of the 90 patients (56%) postoperatively. The postoperative MVP group had higher pulmonary-to-systemic flow ratios (3.6 +/- 1.9 vs 2.8 +/- 1.1, p less than 0.05) and higher mean pulmonary arterial pressures (21 +/- 11 vs 13 +/- 5 mmHg, p less than 0.01) at the time of surgery. Between the two groups with or without MVP postoperatively, there was no difference (p less than 0.05) in age at surgery, the postoperative duration and left ventricular (LV) deformity index both in pre- and postoperative states. A mitral regurgitant (MR) murmur was recorded in seven patients postoperatively. However, only two had clinically severe MR. It was concluded that MVP is frequently detected in patients with closure of ASD and it is related neither to degree of the LV deformity nor to age at operation; rather, it is related to the severity of the preoperative hemodynamic state. Clinically significant MR is rare in the postoperative period.
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