EFFECTS OF RIGHT VENTRICULAR MUSCLE BUNDLES ON MEASUREMENT OF THE INTERVENTRICULAR SEPTUM IN HYPERTROPHIC CARDIOMYOPATHY

AbstractWe discuss the clinical course of aneonate with idiopathic hypertrophic cardiomyopathy who showed rapid progression of stenosis of the right ventricular outflow tract and reduction in size of the right ventricular cavity due to thicken ing of the ventricular septum. Medical treatment proved unsuccessful. We suggest that balloon atrial septostomy combined with construction of a Blalock-Taussig shunt may be effective in view of the hemodynamics, which mimic pulmonary atresia with intact interventricular septum.

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Rheology of right ventricular outflow tract obstruction: sub-pulmonary membrane developing months after primary intervention to treat pulmonary atresia with intact interventricular septum

Cardiology in the Young ◽

10.1017/s1047951121001591 ◽

2021 ◽

pp. 1-4

Author(s):

Baher M. Hanna ◽

Wesam E. El-Mozy ◽

Sonia A. El-Saiedi

Keyword(s):

Right Ventricular ◽

Interventricular Septum ◽

Pulmonary Atresia ◽

Right Ventricular Outflow Tract ◽

Rare Condition ◽

Surgical Excision ◽

Ventricular Outflow Tract ◽

Outflow Tract ◽

Ventricular Outflow Tract Obstruction ◽

The Right

Abstract Isolated sub-pulmonary membrane is a rare condition, the origin of which has been debatable. Transcatheter treatment of pulmonary valve atresia with intact interventricular septum by radiofrequency perforation and balloon dilatation to restore biventricular circulation is gaining more popularity, with improving results over time. We report in our experience of 79 cases in 10 years the development of a sub-pulmonary membrane in 4 cases: causing significant obstruction requiring surgical excision in one case that revealed a fibrous membrane on pathology; causing mild right ventricular outflow tract obstruction in another and not yet causing obstruction in 2. On cardiac MRI, the right ventricular outflow tract and the right ventricular outflow tract/pulmonary atresia angle showed no morphological abnormalities.

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Regional shape, global function and mechanics in right ventricular volume and pressure overload conditions: a three-dimensional echocardiography study

The International Journal of Cardiovascular Imaging ◽

10.1007/s10554-020-02117-8 ◽

2021 ◽

Author(s):

Jurate Bidviene ◽

Denisa Muraru ◽

Francesco Maffessanti ◽

Egle Ereminiene ◽

Attila Kovács ◽

...

Keyword(s):

Right Ventricular ◽

Interventricular Septum ◽

Three Dimensional ◽

Pressure Overload ◽

Volume Overload ◽

Ventricular Volume ◽

Longitudinal Contraction ◽

Convex Shape ◽

Dimensional Echocardiography ◽

Three Dimensional Echocardiography

AbstractOur aim was to assess the regional right ventricular (RV) shape changes in pressure and volume overload conditions and their relations with RV function and mechanics. The end-diastolic and end-systolic RV endocardial surfaces were analyzed with three-dimensional echocardiography (3DE) in 33 patients with RV volume overload (rToF), 31 patients with RV pressure overload (PH), and 60 controls. The mean curvature of the RV inflow (RVIT) and outflow (RVOT) tracts, RV apex and body (both divided into free wall (FW) and septum) were measured. Zero curvature defined a flat surface, whereas positive or negative curvature indicated convexity or concavity, respectively. The longitudinal and radial RV wall motions were also obtained. rToF and PH patients had flatter FW (body and apex) and RVIT, more convex interventricular septum (body and apex) and RVOT than controls. rToF demonstrated a less bulging interventricular septum at end-systole than PH patients, resulting in a more convex shape of the RVFW (r = − 0.701, p < 0.0001), and worse RV longitudinal contraction (r = − 0.397, p = 0.02). PH patients showed flatter RVFW apex at end-systole compared to rToF (p < 0.01). In both groups, a flatter RVFW apex was associated with worse radial RV contraction (r = 0.362 in rToF, r = 0.482 in PH at end-diastole, and r = 0.555 in rToF, r = 0.379 in PH at end-systole, respectively). In PH group, the impairment of radial contraction was also related to flatter RVIT (r = 0.407) and more convex RVOT (r = − 0.525) at end-systole (p < 0.05). In conclusion, different loading conditions are associated to specific RV curvature changes, that are related to longitudinal and radial RV dysfunction.

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Heart in Acromegaly: The Echocardiographic Characteristics of Patients Diagnosed with Acromegaly in Various Stages of the Disease

International Journal of Endocrinology ◽

10.1155/2018/6935054 ◽

2018 ◽

Vol 2018 ◽

pp. 1-7 ◽

Cited By ~ 5

Author(s):

Agata Popielarz-Grygalewicz ◽

Jakub S. Gąsior ◽

Aleksandra Konwicka ◽

Paweł Grygalewicz ◽

Maria Stelmachowska-Banaś ◽

...

Keyword(s):

Right Ventricular ◽

Healthy Volunteers ◽

Global Longitudinal Strain ◽

Interventricular Septum ◽

Left Ventricular ◽

Volume Index ◽

Control Group ◽

Glucose Metabolism Disorders ◽

Acromegalic Cardiomyopathy ◽

The Right

To determine whether the echocardiographic presentation allows for diagnosis of acromegalic cardiomyopathy. 140 patients with acromegaly underwent echocardiography as part of routine diagnostics. The results were compared with the control group comprising of 52 age- and sex-matched healthy volunteers. Patients with acromegaly presented with higher BMI, prevalence of arterial hypertension, and glucose metabolism disorders (i.e., diabetes and/or prediabetes). In patients with acromegaly, the following findings were detected: increased left atrial volume index, increased interventricular septum thickness, increased posterior wall thickness, and increased left ventricular mass index, accompanied by reduced diastolic function measured by the following parameters: E’med., E/E’, and E/A. Additionally, they presented with abnormal right ventricular systolic pressure. All patients had normal systolic function measured by ejection fraction. However, the values of global longitudinal strain were slightly lower in patients than in the control group; the difference was statistically significant. There were no statistically significant differences in the size of the right and left ventricle, thickness of the right ventricular free wall, and indexed diameter of the ascending aorta between patients with acromegaly and healthy volunteers. None of 140 patients presented systolic dysfunction, which is the last phase of the so-called acromegalic cardiomyopathy. Some abnormal echocardiographic parameters found in acromegalic patients may be caused by concomitant diseases and not elevated levels of GH or IGF-1 alone. The potential role of demographic parameters like age, sex, and/or BMI requires further research.

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PP-133 AN EXTREMELY RARE CASE; ISOLATED RIGHT VENTRICULAR HYPERTROPHIC CARDIOMYOPATHY

International Journal of Cardiology ◽

10.1016/s0167-5273(13)70337-1 ◽

2013 ◽

Vol 163 (3) ◽

pp. S133-S134

Author(s):

M. Yalçın ◽

Z. Işılak ◽

E. Kardeşoglu ◽

M. İncedayı ◽

M. Uzun ◽

...

Keyword(s):

Hypertrophic Cardiomyopathy ◽

Right Ventricular ◽

Rare Case

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Prevalence and Clinical Correlates of Right Ventricular Dysfunction in Patients With Hypertrophic Cardiomyopathy

The American Journal of Cardiology ◽

10.1016/j.amjcard.2013.09.045 ◽

2014 ◽

Vol 113 (2) ◽

pp. 361-367 ◽

Cited By ~ 34

Author(s):

Gherardo Finocchiaro ◽

Joshua W. Knowles ◽

Aleksandra Pavlovic ◽

Marco Perez ◽

Emma Magavern ◽

...

Keyword(s):

Hypertrophic Cardiomyopathy ◽

Right Ventricular ◽

Ventricular Dysfunction ◽

Right Ventricular Dysfunction ◽

Clinical Correlates

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Right ventricular involvement in hypertrophic cardiomyopathy: Patterns and implications

Hellenic Journal of Cardiology ◽

10.1016/j.hjc.2018.11.009 ◽

2020 ◽

Vol 61 (1) ◽

pp. 3-8 ◽

Cited By ~ 1

Author(s):

Kalliopi Keramida ◽

George Lazaros ◽

Petros Nihoyannopoulos

Keyword(s):

Hypertrophic Cardiomyopathy ◽

Right Ventricular

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Localization of magnesium-28 in the myocardium

American Journal of Physiology-Legacy Content ◽

10.1152/ajplegacy.1959.196.2.375 ◽

1959 ◽

Vol 196 (2) ◽

pp. 375-376 ◽

Cited By ~ 6

Author(s):

W. Glaser ◽

J. L. Brandt

Keyword(s):

Skeletal Muscle ◽

Right Ventricular ◽

Cardiac Muscle ◽

Interventricular Septum ◽

Purkinje System ◽

Specialized Tissue ◽

Left And Right

The finding of an unusual concentrating ability of cardiac muscle for magnesium-28 compared to skeletal muscle was confirmed. An extension of this observation showed that the interventricular septum had an even greater ability to concentrate magnesium-28 as compared to the left and right ventricular walls. Studies of isolated Purkinje system in two calves made it unlikely that the distribution of this specialized tissue was the explanation for the distribution of magnesium-28 in the different portions of the ventricles.

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