Differences in transmitral flow velocity pattern during increase in preload in patients with abnormal left ventricular relaxation

Cardiology
H YamadaS Ito

Abstract

Changes in transmitral flow (TMF) and pulmonary venous flow (PVF) velocities during increases in preload were compared in patients with a higher peak atrial systolic velocity than peak early diastolic velocity (A/E > 1) for the TMF velocity to determine differences in hemodynamic response. Fifteen patients with dilated hearts, 22 with hypertrophied hearts and 15 control patients were studied. TMF and PVF velocities were recorded by transesophageal pulsed Doppler echocardiography before and during application of lower body positive pressure. The value for peak early diastolic velocity increased, while the isovolumic relaxation time decreased with increases in preload in all groups. The value for peak atrial systolic velocity decreased in the dilated-heart group, but increased in the hypertrophied-heart and control groups. The peak second systolic and early diastolic PVF velocities increased in the dilated- and hypertrophied-heart groups, but did not change in the control group. The peak atrial systolic PVF velocity and the difference in duration of the atrial systolic PVF and TMF velocities increased in the dilated- and hypertrophied-heart groups, and its changing rate was highest in the group with dilated hearts. These results ...Continue Reading

Citations

Sep 22, 2005·Echocardiography·Shih-Kai LinChun-Peng Liu
Dec 10, 1999·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·J E MøllerK Egstrup
Jun 24, 2014·JACC. Cardiovascular Imaging·Hirotsugu YamadaMasataka Sata
Sep 30, 2014·The Journal of Medical Investigation : JMI·Tomoya HaraMasataka Sata
Aug 20, 2016·Journal of Echocardiography·Takashi OkiSatoshi Nakatani
Jun 8, 2018·Journal of Echocardiography·Kengo SuzukiMakoto Akaishi

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