Results 81 to 90 of about 4,597 (239)

Haemodynamic responses to head‐up tilt versus lower‐body negative pressure in type 1 diabetes

Experimental Physiology, EarlyView.
Abstract Head‐up tilt (HUT) and lower‐body negative pressure (LBNP) both reduce central blood volume but differ in heart orientation and regional fluid shifts. Whether they evoke comparable cardiovascular regulation when matched for preload remains uncertain.
Victorien Faivre‐Rampant, Jules Warnier, Perrine Larmet, Damien Garcia, Michael Joubert, Damian Miles Bailey, Igor Mekjavic, Hervé Normand, Amir Hodzic   +8 more
wiley   +1 more source

Impedance plethysmography of thoracic region: impedance cardiography [PDF]

, 1990
Impedance plethysmograms were recorded from thoracic region in 254 normal subjects, 183 patients with coronary artery disease, 391 patients with valvular heart disease and 107 patients with congenital septal disorder.
Tahilkar, K. I., Jindal, G. D., Deshpande, A. K., Jagasia, P. M., Bharadwaj, P. A., Parulkar, G. B., Murali, K. V.   +6 more
core   +2 more sources

Quantifying skin microvascular function responses to distinct forms of heat stress in humans using optical coherence tomography

Experimental Physiology, EarlyView.
Abstract Optical coherence tomography (OCT) enables visualization and quantification of the cutaneous microvasculature, yet no study has compared responses to distinct forms of heating in humans. We hypothesized that local skin heating (LH) would evoke larger responses in microvascular diameter, velocity, flow and density than passive whole‐body ...
Kristanti W. Wigati, Robert A. McLaughlin, Harrison T. Caddy, Howard H. Carter, Louise H. Naylor, Daniel J. Green   +5 more
wiley   +1 more source

Non-invasive biomarkers for detecting progression toward hypovolemic cardiovascular instability in a lower body negative pressure model

Scientific Reports
Occult hemorrhages after trauma can be present insidiously, and if not detected early enough can result in patient death. This study evaluated a hemorrhage model on 18 human subjects, comparing the performance of traditional vital signs to multiple off ...
Ethan K. Murphy, Spencer R. Bertsch, Samuel B. Klein, Navid Rashedi, Yifei Sun, Michael J. Joyner, Timothy B. Curry, Christopher P. Johnson, Riley J. Regimbal, Chad C. Wiggins, Jonathon W. Senefeld, John R. A. Shepherd, Jonathan Thomas Elliott, Ryan J. Halter, Vikrant S. Vaze, Norman A. Paradis   +15 more
doaj   +1 more source

Long‐term adverse cardiovascular changes induced by cocoa shell extract administration through lactation in fetal undernourished and control rats

Experimental Physiology, EarlyView.
Abstract Cocoa shell extract (CSE; rich in antioxidant compounds) administered to adult hypertensive rats exposed to fetal undernutrition (MUN) reduces blood pressure, improving cardiovascular alterations. We aimed to explore lactation as a reprogramming window, evaluating the long‐term effects of CSE supplementation during this period. MUN and control
Santiago Ruvira, Pilar Rodríguez‐Rodríguez, Metee Iampanichakul, Begoña Quintana‐Villamandos, Dolores Morales, David Ramiro‐Cortijo, Silvia M. Arribas   +6 more
wiley   +1 more source

Evaluation of Five Bioelectrical Impedance Analysis Equations Against Air-Displacement Plethysmography in an Eastern European Population

Applied Sciences
Bioelectrical impedance analysis (BIA) is a widely used and an easy-to-apply method for determining body composition. However, its accuracy depends on population-specific equations.
Iuliana Cretescu, Oana Munteanu, Valeria Mocanu, Raluca Horhat   +3 more
doaj   +1 more source

Algorithm for identifying and separating beats from arterial pulse records

BioMedical Engineering OnLine, 2005
Background This project was designed as an epidemiological aid-selecting tool for a small country health center with the general objective of screening out possible coronary patients.
Valentinuzzi Max E, Herrera Myriam C, Treo Ernesto F   +2 more
doaj   +1 more source

Impact of artificial airway resistances on regional ventilation distribution during airway closure

Current Directions in Biomedical Engineering, 2020
Electrical impedance tomography (EIT), a noninvasive and radiation-free imaging technique can be used in pulmonary function monitoring for determining regional ventilation distribution within the lung.
März Melanie, Howe Sarah, Laufer Bernhard, Moeller Knut, Krueger-Ziolek Sabine   +4 more
doaj   +1 more source

Sex‐specific differences in mortality and neurocardiac interactions in the Kv1.1 knockout mouse model of sudden unexpected death in epilepsy (SUDEP)

The Journal of Physiology, EarlyView.
Abstract figure legend The Kcna1 knockout mouse model of sudden unexpected death in epilepsy (SUDEP) exhibits sex‐specific differences in SUDEP risk. Female mice exhibit a lower SUDEP risk than males, despite similar seizure characteristics and interictal cardiac function across sexes.
Kelsey Paulhus, Praveen Kumar, Kelly Kneale, T. Noah Hutson, Nicole M. Gautier‐Hall, Deng‐Shan Shiau, Megan Watts, Krystle Trosclair, Hemangini A. Dhaibar, Paari Dominic, Leonidas Iasemidis, Edward Glasscock   +11 more
wiley   +1 more source

TMEM16A channel signalling microdomains in the regulation of vascular function

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic representation of TMEM16A channel signalling microdomains. Calcium influx or calcium release from the endoplasmic/sarcoplasmic reticulum (ER/SR) activates TMEM16A channels through interactions with regulatory proteins in vascular smooth muscle cells or endothelial cells. TMEM16A channel activation drives chloride efflux,
Fênix Araujo, Swapnil K. Sonkusare
wiley   +1 more source