Clinical and Experimental Analysis of 201Thallium Uptake of the Heart

1978 ◽  
Vol 17 (04) ◽  
pp. 142-148
Author(s):  
U. Büll ◽  
S. Bürger ◽  
B. E. Strauer
Keyword(s):  
Oxygen Consumption ◽  
Left Ventricle ◽  
Muscle Mass ◽  
Myocardial Oxygen Consumption ◽  
Animal Experiments ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Flow Measurements ◽  
Myocardial Flow

Studies were carried out in order to determine the factors influencing myocardial 201T1 uptake. A total of 158 patients was examined with regard to both 201T1 uptake and the assessment of left ventricular and coronary function (e. g. quantitative ventriculography, coronary arteriography, coronary blood flow measurements). Moreover, 42 animal experiments (closed chest cat) were performed. The results demonstrate that:1) 201T1 uptake in the normal and hypertrophied human heart is linearly correlated with the muscle mass of the left ventricle (LVMM);2) 201T1 uptake is enhanced in the inner (subendocardial) layer and is decreased in the outer (subepicardial) layer of the left ventricular wall. The 201T1 uptake of the right ventricle is 40% lower in comparison to the left ventricle;3) the basic correlation between 201T1 uptake and LVMM is influenced by alterations of both myocardial flow and myocardial oxygen consumption; and4) inotropic interventions (isoproterenol, calcium, norepinephrine) as well as coronary dilatation (dipyridamole) may considerably augment 201T1 uptake in accordance with changes in myocardial oxygen consumption and/or myocardial flow.It is concluded that myocardial 201T1 uptake is determined by multiple factors. The major determinants have been shown to include (i) muscle mass, (ii) myocardial flow and (iii) myocardial oxygen consumption. The clinical data obtained from patient groups with normal ventricular function, with coronary artery disease, with left ventricular wall motion abnormalities and with different degree of left ventricular hypertrophy are correlated with quantitated myocardial 201T1 uptake.

scholarly journals Mechanically Unloading the Left Ventricle Before Coronary Reperfusion Reduces Left Ventricular Wall Stress and Myocardial Infarct Size

Circulation ◽  
2013 ◽  
Vol 128 (4) ◽  
pp. 328-336 ◽  
Author(s):  
Navin K. Kapur ◽  
Vikram Paruchuri ◽  
Jose Angel Urbano-Morales ◽  
Emily E. Mackey ◽  
Gerard H. Daly ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Infarct Size ◽  
Myocardial Infarct ◽  
Wall Stress ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Myocardial Infarct Size ◽  
Ventricular Wall ◽  
Coronary Reperfusion

scholarly journals Multiple Fistula Emptying into the Left Ventricle through the Entire Left Ventricular Wall

2012 ◽  
Vol 20 (2) ◽  
pp. 108 ◽  
Author(s):  
Dong-Yeub Lee ◽  
Seon Hee Park ◽  
Myeong Hwan Bae ◽  
Jang Hun Lee ◽  
Dong Heon Yang ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Entire Left Ventricular

scholarly journals Left ventricular puncture during thoracentesis

2019 ◽  
Vol 12 (4) ◽  
pp. e227613
Author(s):  
Daniel Farinas Lugo ◽  
Prasad Chalasani ◽  
Veronica del Calvo
Keyword(s):  
Heart Disease ◽  
Left Ventricle ◽  
Ischaemic Heart Disease ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Unusual Complication ◽  
Ventricular Wall ◽  
Ultrasound Guided ◽  
Ventricular Puncture

Left ventricular puncture during a thoracentesis is a rare and unusual complication that has yet to be reported. We report a case in which a 74-year-old woman with dilated ischaemic heart disease suffered from puncture of the left ventricle during a routine ultrasound-guided thoracentesis despite following the recommended protocol and procedures. She became haemodynamically unstable and underwent an emergent thoracotomy for removal of the catheter and repair of the left ventricular wall.

Normal Left Ventricular Wall Motion Measured with Two-Dimensional Myocardial Tagging

1993 ◽  
Vol 34 (5) ◽  
pp. 450-456 ◽  
Author(s):  
P. Qi ◽  
C. Thomsen ◽  
F. Ståhlberg ◽  
O. Henriksen
Keyword(s):  
Left Ventricle ◽  
Wall Motion ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Left Ventricular Wall Motion ◽  
Early Systole ◽  
Normal Left Ventricular ◽  
Ventricular Wall Motion ◽  
Late Systole

Using a myocardial tagging technique, normal left ventricular wall motion was studied in 3 true short axis views and a double oblique 4-chamber view in 14 and 11 volunteers, respectively. Three orthogonal directions of left ventricular motion were observed throughout the systole; a concentric contraction towards the center of the left ventricle, a motion of the base of the heart towards the apex, and a rotation of the left ventricle around its long axis. The direction of left ventricular rotation changed from early systole to late systole. The base and middle levels of the left ventricle rotated counterclockwise (CCW) at early systole and clockwise (CW) at late systole, whereas the apex of the heart rotated CW at early systole and CCW at late systole. The different directions of the rotation of base and apex resulted in a myocardial twisting that changed direction from early to late systole. We conclude that MR imaging with myocardial tagging is a method that can be used to study normal left ventricular wall motion, and that is promising for future use in patient groups.

scholarly journals Mathematical and Ultrasonographic Model of the Left Ventricle: in Vitro Studies

2012 ◽  
Vol 37 (4) ◽  
pp. 583-595 ◽  
Author(s):  
Robert Olszewski ◽  
Zbigniew Trawiński ◽  
Janusz Wójcik ◽  
Andrzej Nowicki
Keyword(s):  
Numerical Modeling ◽  
Left Ventricle ◽  
Left Ventricular ◽  
In Vitro Studies ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Mobile Environment ◽  
The Creation

Abstract The main objective of this study is to develop an echocardiographic model of the left ventricular and numerical modeling of the speckles- markers tracking in the ultrasound (ultrasonographic) imaging of the left ventricle. The work is aimed at the creation of controlled and mobile environment that enables to examine the relationships between left ventricular wall deformations and visualizations of these states in the form of echocardiographic imaging and relations between the dynamically changing distributions of tissue markers of studied structures.

Adequate left ventricular preparation allows for arterial switch despite late referral

2003 ◽  
Vol 13 (1) ◽  
pp. 49-52 ◽  
Author(s):  
Antonio F. Corno ◽  
Michel Hurni ◽  
Maurice Payot ◽  
Nicole Sekarski ◽  
Piergiorgio Tozzi ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Ventricular Volume ◽  
Left Ventricular ◽  
Left Ventricular Wall ◽  
Ventricular Wall ◽  
Arterial Switch ◽  
The Mean ◽  
And Function ◽  
Anomalous Pulmonary Venous Connection ◽  
Late Referral

Objective:To evaluate the feasibility of the arterial switch for surgical repair of transposition, defined as the combination of concordant atrioventricular and discordant ventriculo-arterial connections, after late referral.Methods:From March 2000 to August 2001, six children underwent an arterial switch procedure following left ventricular preparation because of late referral. The mean age at referral was 8.3 months, with a range from 3 to 25 months, and mean body weight was 5.3 kg, with a range from 3.7 to 9.3 kg. The mean saturation of oxygen was 57%, with a range from 50 to 72%. Associated defects included a restrictive ventricular septal defect in three patients, aortic coarctation in one, and partially anomalous pulmonary venous connection in one. The mean interval between referral and the arterial switch procedure was 3.7 months, within a range from 1 to 7 months. A mean of 1.5 surgical procedures were undertaken to prepare the left ventricle, the most being 3 procedures, including combinations of creation of an inter-atrial communication in four patients, banding of the pulmonary trunk in five, and creation of a systemic-to-pulmonary arterial shunt in three. We evaluated left ventricle ejection and shortening fractions, left ventricular diastolic diameter and volume, right and left ventricular wall thicknesses, and the ratio of right to left ventricular values by echocardiography at referral, immediately before, and one week after the arterial switch procedure.Results:All children are alive and well, with a mean follow-up of 17 months, ranging from 9 to 26 months. Echocardiography showed a statistically significant decrease of the ratio between right and left ventricular wall thicknesses, from 1.33 ± 0.26 at referral to 0.79 ± 0.08 before the switch procedure (p < 0.005). Left ventricular function was adequate after arterial switch, with a mean ejection fraction of 79.3%, ranging from 66 to 87%, and a mean shortening fraction of 41.7%, ranging from 30 to 49%.Conclusions:Despite late referral, and initially inadequate left ventricular volume and mural thickness, children with transposition can successfully be treated with the arterial switch procedure, provided that the left ventricle is adequately prepared, using echocardiography to monitor left ventricular morphology and function.

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