Assessment of abnormal left atrial relaxation by transesophageal pulsed doppler echocardiography of pulmonary venous flow velocity

56 untreated patients in sinus rhythm, including 25 with previous myocardial infarction, 9 with hypertrophic cardiomyopathy, 11 with dilated cardiomyopathy, and 11 with chest pain syndrome as controls.

Transesophageal pulsed doppler echocardiography of pulmonary venous flow velocity (measuring peak first systolic velocity [PVS1], peak atrial systolic velocity [PVA], and their time-velocity integrals).

Correlation of pulmonary venous flow velocity parameters with left atrial relaxation parameters (maximum LA dimension, mean pulmonary capillary wedge pressure, amplitude of interatrial septal motion, and percent fractional LA relaxation).surrogate