Document Detail

Changes in left ventricular inflow and pulmonary venous flow velocities during preload alteration in dilated heart.
MedLine Citation:
PMID:  8903536     Owner:  NLM     Status:  MEDLINE    
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 > or = 6.0 cm) and impaired LV systolic function (% fractional shortening of the LV < or = 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 findings suggest that the compliance failure and relaxation failure patterns of LVIF are readily interchangeable in various hemodynamic 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.
K Kiyoshige; T Oki; N Fukuda; A Iuchi; T Tabata; T Fujimoto; K Manabe; Y Kageji; M Sasaki; S Ito
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Clinical cardiology     Volume:  19     ISSN:  0160-9289     ISO Abbreviation:  Clin Cardiol     Publication Date:  1996 Jan 
Date Detail:
Created Date:  1997-02-28     Completed Date:  1997-02-28     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7903272     Medline TA:  Clin Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  38-44     Citation Subset:  IM    
The Second Department of Internal Medicine, Tokushima University School of Medicine, Japan.
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MeSH Terms
Blood Flow Velocity
Cardiomyopathy, Dilated / physiopathology,  ultrasonography*
Echocardiography, Transesophageal*
Hemodynamics / physiology
Myocardial Infarction / physiopathology,  ultrasonography*
Pulmonary Wedge Pressure / physiology
Ventricular Function, Left / physiology

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