A large Eustachian valve is a confounder of contrast but not of color Doppler transesophageal echocardiography in detecting a right-to-left shunt across a patent foramen ovale

• 检测卵圆孔未闭右向左分流时,大的Eustachian瓣是经食管造影超声心动图的混淆因素,但不影响彩色多普勒经食管超声心动图