Ventricular-Arterial Coupling in Children and Infants With Congenital Heart Disease After Cardiopulmonary Bypass Surgery: Observational Study*

Conclusions: Median ventricular-arterial coupling values in children after cardiac surgery appear high (above 1). Uncoupling was particularly evident in high ventricular-arterial coupling patients who showed the lowest end-systolic elastance values (but not significantly different arterial elastance values) compared with low ventricular-arterial coupling. Ventricular-arterial coupling appears to be inversely proportional to pre-ejection time, total ejection time, and ejection fraction.
Source: Pediatric Critical Care Medicine - Category: Pediatrics Tags: Cardiac Intensive Care Source Type: research

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Source: Headlines - Category: Radiology Source Type: news
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Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
In conclusion, imaging myocardial viability by PET provides assessment of both physiological perfusion and myocardial tissue's metabolic activity to differentiate hibernating from scarred myocardium.
Source: Current Opinion in Cardiology - Category: Cardiology Tags: IMAGING AND HEART FAILURE: MYOCARDIAL STRAIN Edited by Sherif Nagueh Source Type: research
Abstract Background: Incorporating focused cardiac ultrasonography (FoCUS) into clinical examination could improve the diagnostic yield of bedside patient evaluation. Purpose: To compare the accuracy of FoCUS-assisted clinical assessment versus clinical assessment alone for diagnosing left ventricular dysfunction or valvular disease in adults having cardiovascular evaluation. Data Sources: English-language searches of MEDLINE, Embase, and Web of Science from 1 January 1990 to 23 May 2019 and review of reference citations. Study Selection: Eligible studies were done in patients having cardiovascular ...
Source: Annals of Internal Medicine - Category: Internal Medicine Authors: Tags: Ann Intern Med Source Type: research
In conclusion, with study of the frailty syndrome still in its infancy, frailty analysis remains a major challenge. It is a challenge that needs to be overcome in order to shed light on the multiple mechanisms involved in the pathogenesis of this syndrome. Although several mechanisms contribute to frailty, immune system alteration seems to play a central role: this syndrome is characterized by increased levels of pro-inflammatory markers and the resulting pro-inflammatory status can have negative effects on various organs. Future studies should aim to better clarify the immune system alteration in frailty, and seek to esta...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
This study aims to develop refined computational models simulating the deployments of Evolut R and PRO TAVR devices in a representative calcified BAV. The paravalvular leakage (PVL) was also calculated by computational fluid dynamics simulations. Computed tomography scan of severely stenotic BAV patient was acquired. The 3D calcium deposits were generated and embedded inside a parametric model of the BAV. Deployments of the Evolut R and PRO inside the calcified BAV were simulated in five bioprosthesis leaflet orientations. The hypothesis of asymmetric and elliptic stent deployment was confirmed. Positioning the bioprosthes...
Source: Medical and Biological Engineering and Computing - Category: Biomedical Engineering Source Type: research
AbstractPurpose of ReviewThe purpose of this article is to review the imaging findings and current imaging techniques of acute pulmonary embolism (PE) and chronic thromboembolic disease. Special considerations are also discussed, including pregnancy, congenital heart disease, lower extremity computed tomography (CT), and the isolated subsegmental PE.Recent FindingsCT pulmonary angiography and planar ventilation/perfusion (V/Q) lung scintigraphy are the primary means of evaluating pulmonary embolic disease. Magnetic resonance angiography avoids ionizing radiation and iodinated contrast in select patients. V/Q SPECT/CT provi...
Source: Current Respiratory Care Reports - Category: Respiratory Medicine Source Type: research
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Source: Headlines - Category: Radiology Source Type: news
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Source: Frontiers in Neurology - Category: Neurology Source Type: research
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