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Minute Stroke Distance is a More Reproducible Measurement Than Cardiac Output in the Assessment of Fetal Ventricular Systolic Function
Echocardiographic quantification of fetal cardiac output (CO) aids clinical decision-making in the management of various cardiac and extracardiac diseases. Small variability in measuring semilunar valve dimension significantly reduces the reproducibility of the calculated CO. We propose minute stroke distance or velocity-time integral (VTI) as a more reproducible measure reflecting fetal ventricular systolic function. We hypothesized that right and left ventricular minute VTI increase predictably with estimated fetal weight (EFW) and are more reproducible than CO.
Source: Journal of the American Society of Echocardiography - August 13, 2022 Category: Cardiology Authors: Heather Y. Sun, Elif Seda Selamet Tierney, Theresa A. Tacy, Rajesh Punn Tags: Clinical Investigations Source Type: research

Agitated Blood-Saline Rather Than Agitated Air-Saline for Echocardiographic Shunt Studies
Bubble contrast echocardiography, with an agitated mixture of air and saline, is used for the detection of intrapulmonary or intracardiac right-to-left shunts.1 However, the administration of air in patients with large right-to-left shunts may have a risk of embolic complications including stroke.2-5 The addition of blood to the air-saline mixture aids with image quality.6,7 The goal of this study was to test the feasibility of an agitated blood-saline (without additional air) mixture in shunt studies and to compare its efficacy against the standard agitated air-saline in opacification of right-sided cardiac chambers.
Source: Journal of the American Society of Echocardiography - June 8, 2020 Category: Cardiology Authors: Mahmoud A. Ali, Mary J. Hepinstall, Cynthia S. Cassidy, Conor M. Lane, Patricia A. Pellikka, Jeremy J. Thaden, Sorin V. Pislaru, Garvan C. Kane Tags: Brief Research Communication Source Type: research