Open AccessChanges in left ventricular inflow and pulmonary venous flow velocities during preload alteration in dilated heart
Author(s) -
Kiyoshige Koichi,
Oki Takashi,
Fukuda Nobuo,
Iuchi Arata,
Tabata Tomotsugu,
Fujimoto Takashi,
Manabe Kazuyo,
Kageji Yoshimi,
Sasaki Miwa,
Ito Susumu
Publication year - 1996
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960190108
Subject(s) - preload , medicine , cardiology , heart failure , dilated cardiomyopathy , pulmonary wedge pressure , diastole , central venous pressure , compliance (psychology) , hemodynamics , blood pressure , heart rate , social psychology , psychology
The aim of the present study was to assess the changes of left ventricular inflow (LVIF) and pulmonary venous flow (PVF) velocities during preload alteration in 30 patients with dilated heart (LV end‐diastolic dimension ≥ 6.0 cm) and impaired LV systolic function (% fractional shortening of the LV ≤ 25%). We performed transesophageal pulsed Doppler echocardiography during lower body negative (LBNP, ‐40 mmHg) and positive pressure (LBPP, +40 mmHg) in 10 patients with dilated cardiomyopathy, in 20 with old myocardial infarction, and in 22 healthy controls. Eight of the patients showed a pseudonormalization (compliance failure) pattern, and 22 showed a decreased early diastolic wave and compensatorily increased atrial systolic wave (relaxation failure) pattern of LVIF in the control state. Mean pulmonary capillary wedge pressure (PCWP) was greater in the compliance failure group than in the relaxation failure group in the control state. LVIF in 6 of the 22 patients with the relaxation failure pattern changed to the compliance failure pattern during LBPP, and that in 3 of 8 patients in the compliance failure group changed to the relaxation failure pattern during LBNP. The 6 patients with a change from the relaxation failure to the compliance failure pattern showed significantly higher peak diastolic and atrial systolic PVFs during LBPP than in the control state, and significantly higher PCWPs in the control state than the 16 patients with no change in LVIF. These find ings suggest that the compliance failure and relaxation failure patterns of LVIF are readily interchangeable in various hemo‐dynamic conditions, and that pattern analysis of LVIF and PVF during preload alteration is useful for understanding the hemodynamic severity and for evaluating preload reduction therapy in the dilated heart.