This study reports the design, construction, and evaluation of an automatic cardiac massage device and support system. The design incorporates the principle of a cardioplethysmograph operated in reverse, such that pneumatic power fed to the prosthesis will mechanically impart a massaging action to the heart. Basically, the prosthesis is a...
A method has been developed for the continuous automated monitoring
of cardiac output in adult rainbow trout. Average cardiac output measured under
control conditions and varied environmental conditions of hypoxia and post-hypoxia
was significantly higher (P≤ 0.05) in male than female trout. The cardiac
output of trout in spawning condition...
In order to study maternal cardiovascular adjustments to pregnancy, serial determinations were carried out on five pregnant and lour nonpregnant ewes. Measurements were made at approximately two to three week intervals, and continued for nine weeks after delivery. Cardiac output was measured with the dye dilution technique using Evans blue...
Individuals with Down syndrome (DS) have less atherosclerosis than others with and without mental retardation (MR). Why individuals with DS do not develop atherosclerosis similarly to others is not known. The insulin resistance syndrome (IRS), a common neuroendocrine disorder underlying cardiovascular disease, has not been investigated in adults with DS...
Recent developments in the field of clinical echocardiography allow the ultrasonographer to objectively quantify both regional and global myocardial function. Regional deformation (Strain) and deformation rate (Strain Rate) are novel indices of ventricular function that can be estimated non-invasively by ultrasonographic interrogation of the heart. Deformation Imaging (DI)represents a family...
Health disparity scholars and researchers call to expand the conceptualization of health disparities research beyond the predominant and long-standing race-based analyses. The call requests the inclusion of frameworks and theories that reflect the complex, multi-level and multifactorial social processes that yield health disparities. Intersectionality is a theoretical framework that is...
Neurons in the abdominal ganglion of the marine mollusk,
Aplysia californica , appear to respond directly to changes in
blood flow and oxygen tension within the ganglion. When circulation
through the ganglion is reduced, the spontaneous activity of some
identifiable neurons are excited while others are inhibited. Many of
the...
Objective. To examine the relationship between wealth and cardiovascular disease risk factors among Hispanic/Latinos of diverse backgrounds.
Design. This cross-sectional study used data from 4,971 Hispanic/Latinos, 18 to 74 years, who participated in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) baseline exam and the HCHS/SOL Sociocultural Ancillary Study. Three...
There is little, if any, direct fossil evidence of the cardiovascular, respiratory, reproductive or digestive biology of dinosaurs. However, a variety of data can be used to draw reasonable inferences about the physiology of the carnivorous theropod dinosaurs (Archosauria: Theropoda). Extant archosaurs, birds and crocodilians, possess regionally differentiated, vascularized and...