Evaluation of Myocardial Function According to Early Diastolic Intraventricular Pressure Difference in Fetuses

2017 ◽  
Vol 30 (11) ◽  
pp. 1130-1137.e1 ◽  
Author(s):  
Yuka Yamamoto ◽  
Ken Takahashi ◽  
Yo Takemoto ◽  
Maki Kobayashi ◽  
Keiichi Itatani ◽  
...  
Keyword(s):  
Pressure Difference ◽  
Myocardial Function ◽  
Intraventricular Pressure

scholarly journals 0157: Echo-based diastolic intraventricular pressure difference as a surrogate of left ventricular untwisting

2016 ◽  
Vol 8 (1) ◽  
pp. 49
Author(s):  
Amir Hodzic ◽  
Damien Garcia ◽  
Leonardo Krsticevic ◽  
Boris Chayer ◽  
Guy Cloutier ◽  
...  
Keyword(s):  
Pressure Difference ◽  
Left Ventricular ◽  
Intraventricular Pressure

scholarly journals Relationship Between Left Ventricular Deformation and Early Diastolic Intraventricular Pressure Difference During Rest and Exercise

2016 ◽  
Vol 62 (1) ◽  
pp. 26-33 ◽  
Author(s):  
KOTOKO MATSUI ◽  
KEN TAKAHASHI ◽  
NOBORU TANAKA ◽  
MAKI KOBAYASHI ◽  
MARIKO YAMADA ◽  
...  
Keyword(s):  
Pressure Difference ◽  
Left Ventricular ◽  
Intraventricular Pressure ◽  
Left Ventricular Deformation ◽  
Rest And Exercise

scholarly journals Two Types of Intraventricular Pressure Difference in the Same Patient

Circulation ◽  
1968 ◽  
Vol 38 (4) ◽  
pp. 649-655 ◽  
Author(s):  
ALLAN G. ADELMAN ◽  
E. DOUGLAS WIGLE
Keyword(s):  
Pressure Difference ◽  
Intraventricular Pressure

Calculating Intraventricular Pressure Difference Using a Multi-Beat Spatiotemporal Reconstruction of Color M-Mode Echocardiography

2014 ◽  
Vol 42 (12) ◽  
pp. 2466-2479 ◽  
Author(s):  
Pavlos P. Vlachos ◽  
Casandra L. Niebel ◽  
Sreyashi Chakraborty ◽  
Min Pu ◽  
William C. Little
Keyword(s):  
Pressure Difference ◽  
Intraventricular Pressure

scholarly journals Left ventricular vortex and intraventricular pressure difference in dogs under various loading conditions

2019 ◽  
Vol 316 (4) ◽  
pp. H882-H888 ◽  
Author(s):  
Katsuhiro Matsuura ◽  
Kenjirou Shiraishi ◽  
Kotomi Sato ◽  
Kazumi Shimada ◽  
Seijirow Goya ◽  
...  
Keyword(s):  
Pressure Difference ◽  
Global Longitudinal Strain ◽  
Relaxation Property ◽  
Left Ventricular ◽  
Intraventricular Pressure ◽  
Loading Conditions ◽  
Ventricular Relaxation ◽  
Early Diastole ◽  
Close Relationship ◽  
Diastolic Relaxation

Restrictions on the conventional evaluation of diastolic function have been recognized, especially under various loading conditions. Recently, new noninvasive ventricular vortex indexes have been introduced and are expected to reflect the cardiac function. Physiologically, there is a hypothesis that the intraventricular pressure difference (IVPD) is related to the formation of vortexes. IVPD and vortex indexes were simultaneously measured, and the relationship between the two was investigated. To verify the possibility of diastolic vorticity as an index of diastolic relaxation, a correlation between diastolic vorticity and the load dependency of vorticity [time constant (τ)] was examined. Six healthy dogs were studied using transthoracic echocardiography, pressure, and a conductance catheter. Vorticity was analyzed using vector flow mapping (VFM). IVPD was determined using Euler’s equation with color M-mode Doppler images. Data were obtained at baseline, at balloon dilatation in the thoracic aorta to alter afterload, at hydroxyethyl starch infusion to alter preload, and at milrinone administration to alter ventricular relaxation. Peak vorticity at early diastole (E-Vor) and IVPD of the midventricle (MIVPD) decreased under pressure loading, were unchanged under volume loading, and increased during milrinone administration. In multivariate analysis, the independent predictors of τ were global longitudinal strain, strain rate at early diastole, and E-Vor. MIVPD was strongly correlated with E-Vor ( r = 0.84). VFM-derived peak E vorticity was strongly related to IVPD, especially MIVPD, under various loading conditions. Both of these novel indexes are promising as reliable indexes of ventricular relaxation, independent from preload. NEW & NOTEWORTHY We showed the close relationship of vortex and intraventricular pressure difference and showed that both of them can become new markers of the left ventricular relaxation property. Our present study creates a paradigm for future studies in the field of intraventircular flow physiology and clinical diastology.

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