T. Yasu et al., LONG-TERM FOLLOW-UP OF AN INTERATRIAL RIGHT-TO-LEFT SHUNT THAT APPEARED AFTER CARDIAC-SURGERY - EVALUATION BY TRANSESOPHAGEAL DOPPLER-ECHOCARDIOGRAPHY, Japanese Circulation Journal, 60(1), 1996, pp. 70-74
Two cases in which a right-to-left shunt appeared across a patent fora
men ovale after mitral valve surgery were clinically and echocardiogra
phically followed for a long period of time. The right-to-left shunt m
arkedly decreased in the supine position on transesophageal Doppler ec
hocardiography in both cases within 2 years after the cardiac surgery,
which presumably corresponds to a decreased risk of paradoxical embol
ism.