Ventricular Volume Overload in the Human Fetus: Observations From Fetal Echocardiography

1990 ◽  
Vol 3 (1) ◽  
pp. 20-29 ◽  
Author(s):  
Norman H. Silverman ◽  
Klaus G. Schmidt
Keyword(s):  
Human Fetus ◽  
Fetal Echocardiography ◽  
Volume Overload ◽  
Ventricular Volume

Diagnosis and natural history of isolated congenital pulmonary regurgitation in fetal life

2000 ◽  
Vol 10 (2) ◽  
pp. 162-165 ◽  
Author(s):  
Kazuhiro Mori ◽  
Yasunobu Hayabuchi ◽  
Yasuhiro Kuroda
Keyword(s):  
Conservative Therapy ◽  
Pulmonary Valve ◽  
Fetal Echocardiography ◽  
Pulmonary Regurgitation ◽  
Volume Overload ◽  
Ventricular Volume ◽  
Fetal Life ◽  
History Of ◽  
Dysplastic Pulmonary Valve ◽  
Rare Instance

AbstractWe describe a rare instance of isolated pulmonary regurgitation caused by a dysplastic pulmonary valve which was detected prenatally. Fetal echocardiography demonstrated severe pulmonary regurgitation, and progressive cardiomegaly because of right ventricular volume overload. After birth, conservative therapy was successful in alleviating the pulmonary vascular resistance, and the pulmonary regurgitation gradually decreased.

scholarly journals Transcatheter Closure of PFO and ASD: Multimodality Imaging for Patient Selection and Perioperative Guidance

2021 ◽  
Vol 8 (7) ◽  
pp. 78
Author(s):  
Gabriele Egidy Assenza ◽  
Luca Spinardi ◽  
Elisabetta Mariucci ◽  
Anna Balducci ◽  
Luca Ragni ◽  
...  
Keyword(s):  
Patient Selection ◽  
Transcatheter Closure ◽  
Multimodality Imaging ◽  
Deep Understanding ◽  
Volume Overload ◽  
Arterial Embolization ◽  
Ventricular Volume ◽  
Intracardiac Echocardiography ◽  
Technical Details ◽  
Asd Closure

Transcatheter closure of patent foramen ovale (PFO) and secundum type atrial septal defect (ASD) are common transcatheter procedures. Although they share many technical details, these procedures are targeting two different clinical indications. PFO closure is usually considered to prevent recurrent embolic stroke/systemic arterial embolization, ASD closure is indicated in patients with large left-to-right shunt, right ventricular volume overload, and normal pulmonary vascular resistance. Multimodality imaging plays a key role for patient selection, periprocedural monitoring, and follow-up surveillance. In addition to routine cardiovascular examinations, advanced neuroimaging studies, transcranial-Doppler, and interventional transesophageal echocardiography/intracardiac echocardiography are now increasingly used to deliver safely and effectively such procedures. Long-standing collaboration between interventional cardiologist, neuroradiologist, and cardiac imager is essential and it requires a standardized approach to image acquisition and interpretation. Periprocedural monitoring should be performed by experienced operators with deep understanding of technical details of transcatheter intervention. This review summarizes the specific role of different imaging modalities for PFO and ASD transcatheter closure, describing important pre-procedural and intra-procedural details and providing examples of procedural pitfall and complications.

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

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.

Prolonged repolarization in atrial septal defect: An example of mechanoelectrical feedback due to right ventricular volume overload

Heart Rhythm ◽  
2016 ◽  
Vol 13 (6) ◽  
pp. 1303-1308 ◽  
Author(s):  
Kristina Rücklová ◽  
Karel Koubský ◽  
Viktor Tomek ◽  
Peter Kubuš ◽  
Jan Janoušek
Keyword(s):  
Right Ventricular ◽  
Atrial Septal Defect ◽  
Septal Defect ◽  
Volume Overload ◽  
Ventricular Volume ◽  
Right Ventricular Volume

Echocardiographic characterisation of cardiac dilatation induced by volume overload in a canine experimental model

2007 ◽  
Vol 55 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Z. Dudás Györki ◽  
A. Kollár ◽  
F. Manczur ◽  
Violetta Kékesi ◽  
K. Vörös
Keyword(s):  
Volume Overload ◽  
Experimental Period ◽  
Ventricular Volume ◽  
Pathological Process ◽  
Left Ventricular ◽  
Canine Heart ◽  
Arteriovenous Fistulas ◽  
2D Echocardiography ◽  
Fractional Shortening ◽  
Cardiac Dilatation

The aim of this study was to characterise the development of cardiac dilatation induced by chronic volume overload in 12 dogs. Bilateral arteriovenous fistulas were created between the common femoral arteries and the femoral veins, and the animals were serially studied with transthoracic echocardiography for a period of 12 weeks after the operation. Compared to the measurements obtained before the operation (week 0), the data obtained at the end of the experimental period showed significantly increased left ventricular volume measured by 2D-echocardiography (from 25.1 cm 3 to 43.8 cm 3 , p < 0.0001 in diastole and from 8.6 cm 3 to 16.8 cm 3 , p < 0.001 in systole), and left ventricular diameter measured by M-mode echocardiography (from 26.2 mm to 32.6 mm, p < 0.0001 in diastole and from 17.1 mm to 20.6 mm, p < 0.001 in systole). The size of the left atrium also increased in transversal (from 29.2 mm to 33.6 mm, p < 0.01) but not in longitudinal diameter. In spite of a significant cardiac chamber dilatation over the 12-week period, left ventricular systolic functional variables (fractional shortening, FS % and ejection fraction, EF %), and also the left ventricular systolic and diastolic free wall thickness remained unchanged. In this study we demonstrated that chronic progressive volume overload resulted in gradual dilatation of the canine heart, and that the pathological process can be monitored successfully by serial echocardiography. We found that left atrial dilatation occurred without the development of mitral regurgitation and/or detectable left ventricular dysfunction.

Ventricular volume overload alters cardiac output distribution in rats during exercise

1980 ◽  
Vol 49 (3) ◽  
pp. 482-490 ◽  
Author(s):  
S. F. Flaim ◽  
W. J. Minteer
Keyword(s):  
Skeletal Muscle ◽  
Cardiac Output ◽  
Left Ventricular Volume ◽  
Treadmill Exercise ◽  
Volume Overload ◽  
Ventricular Volume ◽  
Major Effect ◽  
Left Ventricular ◽  
Radioactive Microsphere ◽  
Radioactive Microsphere Technique

A rat model for chronic left ventricular volume overload (a-v fistula, 2 mo) was used to test the effects of acute exhaustive treadmill exercise (EX) (5 min, 70 ft/min, 0 degrees grade) on cardiocirculatory hemodynamics and cardiac output (CO) distribution during heart failure (HF). Control (C) and HF rats were studied at rest (R) and during the last minute of EX. Heart rate (HR), mean arterial pressure (MAP), and left ventricular end-diastolic (LVEDP) pressure were recorded and CO, blood flow (BF) to various regions, and total CO distribution were determined by the radioactive microsphere technique. In HF, biventricular hypertrophy and elevated LVEDP at R were correlated with an average shunt size equaling 37% of total CO. In both groups, CO and HR rose during EX with no change in MAP. Systemic CO in HF was reduced compared to C during both R and EX. BF to splanchnic, renal, cutaneous, and testicular circulations was compromised at R in HF, whereas only skeletal muscle BF was compromised in HF during EX. Data for CO distribution suggest that the major effect of HF during R was increased delivery to the coronary and the skeletal muscle beds at the expense of the cutaneous and renal beds, whereas %CO to the cerebral, hepatic, and gastrointestinal beds was spared. During EX, %CO to skeletal muscle beds in HF was attenuated compared to C, whereas that to the coronary bed was increased with no change in other regions.

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