Left ventricular volume characteristics in children with tricuspid atresia before and after surgery

1981 ◽  
Vol 47 (5) ◽  
pp. 1105-1110 ◽  
Author(s):  
Kenya Nishioka ◽  
Tetsuro Kamiya ◽  
Tadashi Ueda ◽  
Tadashi Hayashidera ◽  
Chuzo Mori ◽  
...  
Keyword(s):  
Left Ventricular Volume ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Tricuspid Atresia ◽  
Before And After ◽  
Volume Characteristics

scholarly journals Right and left ventricular volume characteristics in children with transposition of the great arteries after Mustard's procedure.

1985 ◽  
Vol 49 (7) ◽  
pp. 679-684 ◽  
Author(s):  
YASUHISA SHIMAZAKI ◽  
YASUNARU KAWASHIMA ◽  
MINORU OGAWA ◽  
HAJIME HIROSE ◽  
KATSUHIKO MIYAMOTO ◽  
...  
Keyword(s):  
Left Ventricular Volume ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Volume Characteristics

Einfluß einer dreidimensionalen Datenstabilisierung in der Radionuklidventrikulographie auf den statistischen Zählfehler der Ejektionsfraktion

1990 ◽  
Vol 29 (03) ◽  
pp. 109-112
Author(s):  
J. Mester ◽  
E. Henze ◽  
R. Ochsenkühn ◽  
R. Lietzenmayer ◽  
R. Weller ◽  
...  
Keyword(s):  
Left Ventricular Volume ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Statistical Uncertainty ◽  
Ventricular Ejection Fraction ◽  
3 Dimensional ◽  
Systematical Error ◽  
Before And After ◽  
Statistical Noise

The suitability of a 3-dimensional filter in diminishing the statistical noise of left ventricular volume curves without any systematical error in the left ventricular ejection fraction (EF) was investigated. The EF values were compared in 50 studies on 24 patients. There was no significant systematical difference between the EFs before and after filtering. The filter diminishes the statistical uncertainty of the EF by a factor of 0.47. Therefore, the method may possibly be employed in processing the left ventricular volume curves.

scholarly journals Right and left ventricular volume characteristics in common atrioventricular canal.

Circulation ◽  
1978 ◽  
Vol 57 (5) ◽  
pp. 991-995 ◽  
Author(s):  
B D Thanopoulos ◽  
E A Fisher ◽  
I W DuBrow ◽  
A R Hastreiter
Keyword(s):  
Left Ventricular Volume ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Atrioventricular Canal ◽  
Volume Characteristics

Assessment of left ventricular mass and volume by cross-sectional echocardiography in newborns and infants with tricuspid atresia prior to surgical intervention

1993 ◽  
Vol 3 (1) ◽  
pp. 34-38
Author(s):  
Michael Vogel ◽  
Jan Skovaranek ◽  
Konrad Bühlmeyer
Keyword(s):  
Surface Area ◽  
Left Ventricular Mass ◽  
Body Surface Area ◽  
Body Surface ◽  
Left Ventricular Volume ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Tricuspid Atresia ◽  
Ventricular Mass ◽  
Normal Left Ventricular

SummaryBecause left ventricular mass may be important in judging feasibility of Fontan type of palliation in tricuspid atresia, this study was undertaken to generate data on left ventricular mass, volume and mass to volume ratio in newborns and infants with tricuspid atresia, native pulmonary stenosis and concordant ventriculoarterial connections prior to any surgical palliation to obtain values for “normal” left ventricular dimensions in tricuspid atresia. The left ventricle was evaluated in the apical two and four chamber view. From these two perpendicular imaging planes, we calculated mass as difference between epicardial and endocardial volume x 1.05 (specific gravity of heart muscle). Mass divided by volume at end-diastole yields the index: mass to volume. Data from 23 newborns and infants with tricuspid atresia were compared to data from 30 age-matched controls with normal hearts. In both patient and control groups, growth of the left ventricle was not linear but related to the 1.4 (volume) or 1.25 (mass) power of body surface area. The equation best describing relation between left ventricular volume and body surface area in normals is volume = 60.7(body surface area)1.4−0.2 ml; in patients with tricuspid atresia volume calculates as 96.7(body surface area)1.4+0.9 ml. In relation to normal infants, infants with tricuspid atresia had a left ventricular volume of 167 (135–206)% of normal and a left ventricular mass of 163 (132–201)% of normal. Left ventricular mass assessed in normals calculates as mass = 59.9(body surface area)1.25+1.3 grams; in patients with tricuspid atresia it calculates as mass= 117.5 (body surface area)1.25−0.9 grams. The index of left ventricular mass to volume in patients with tricuspid atresia measured 1.32, not significantly different from controls, in whom this index calculates as 1.34.

Changes in left ventricular volume and systolic function before and after the closure of ductus arteriosus in full-term infants

1996 ◽  
Vol 44 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Yasushi Takahashi ◽  
Kenji Harada ◽  
Akira Ishida ◽  
Masamichi Tamura ◽  
Toshimasa Tanaka ◽  
...  
Keyword(s):  
Left Ventricular Volume ◽  
Systolic Function ◽  
Ductus Arteriosus ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Full Term ◽  
Term Infants ◽  
Before And After

scholarly journals Determinants of diastolic myocardial tissue Doppler velocities: influences of relaxation and preload

2001 ◽  
Vol 90 (1) ◽  
pp. 299-307 ◽  
Author(s):  
Michael S. Firstenberg ◽  
Neil L. Greenberg ◽  
Michael L. Main ◽  
Jeanne K. Drinko ◽  
Jill A. Odabashian ◽  
...  
Keyword(s):  
Doppler Echocardiography ◽  
Left Ventricular Volume ◽  
Ventricular Volume ◽  
Tissue Doppler ◽  
Left Ventricular ◽  
Myocardial Tissue ◽  
High Fidelity ◽  
Ventricular Relaxation ◽  
Before And After ◽  
Preload Reduction

Myocardial tissue Doppler echocardiography (TDE) has been proposed as a tool for the assessment of diastolic function. Controversy exists regarding whether TDE measurements are influenced by preload. In this study, left ventricular volume and high-fidelity pressures were obtained in eight closed-chest dogs during intermittent caval occlusion. The time constant of isovolumic ventricular relaxation (τ) was altered with varying doses of dobutamine and esmolol. Peak early diastolic myocardial ( E m) and transmitral ( E) velocities were measured before and after preload reduction. The relative effects of changes in preload and relaxation were determined for E m and compared with their effects on E. The following results were observed: caval occlusion significantly decreased E (Δ E = 16.4 ± 3.3 cm/s, 36.6 ± 13.7%, P < 0.01) and E m (Δ E m = 1.3 ± 0.4 cm/s, 32.5 ± 26.1%, P < 0.01) under baseline conditions. However, preload reduction was similar for E under all lusitropic conditions ( P = not significant), but these effects on E m decreased with worsening relaxation. At τ < 50 ms, changes in E m with preload reduction were significantly greater (Δ E m = 2.8 ± 0.6 cm/s) than at τ = 50–65 ms (Δ E m = 1.2 ± 0.2 cm/s) and at τ >65 ms (Δ E m = 0.5 ± 0.1 cm/s, P < 0.05). We concluded that TDE E m is preload dependent. However, this effect decreases with worsening relaxation.

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