Results 141 to 150 of about 85,801 (287)

Premature Ventricular Contractions [PDF]

open access: yesCirculation, 2019
Edward P. Gerstenfeld, Teresa De Marco
openaire   +1 more source

Automatic Mode Switching in Atrial Fibrillation [PDF]

open access: yes, 2005
Automatic mode switching (AMS) algorithms were designed to prevent tracking of atrial tachyarrhythmias (ATA) or other rapidly occurring signals sensed by atrial channels, thereby reducing the adverse hemodynamic and symptomatic consequences of a rapid ...
Antonio De, Simone   +2 more
core  

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Mitochondrial respiration and hydrogen peroxide production rate in right atrial tissues from obese diabetic patients

open access: yesExperimental Physiology, EarlyView.
Abstract Type 2 diabetes (T2D) is a global epidemic, with heart failure being the leading cause of premature death. Mitochondrial dysfunction, characterized by impaired energy metabolism, weakened energy transport system and increased oxidative stress, has been proposed as a key contributor to the impairment of contractile function in T2D hearts ...
Toan Pham   +4 more
wiley   +1 more source

Canonical and non‐canonical functions of proteins regulating mitochondrial dynamics in mammalian physiology

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Mitochondria are highly dynamic organelles that continuously remodel their architecture through coordinated cycles of fusion and fission. This review examines the four key GTPases that orchestrate mitochondrial dynamics in mammals: MFN1, MFN2, OPA1, and DRP1.
Rémi Chaney   +4 more
wiley   +1 more source

Premature ventricular contractions in normal children.

open access: yesThe Turkish journal of pediatrics, 2008
Premature ventricular contractions (PVCs) are frequently seen in children with normal cardiac findings. The purpose of this study was to evaluate the characteristics and the prognosis of PVCs in children with normal heart. This study included 149 children with PVC who did not have systemic or cardiac disease. Their median age at diagnosis was 10 years (
Deniz Cağdaş, Alpay Celiker, Sema Ozer
openaire   +2 more sources

Mathematical model of the zebrafish ventricular cardiomyocyte action potential and calcium transient

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend This study presents the development and validation of the first biophysically detailed computational model of the zebrafish ventricular action potential (AP). The model is based on a human cardiomyocyte framework and reparameterized using published and newly generated patch‐clamp recordings of zebrafish ionic currents.
Ludovica Cestariolo   +5 more
wiley   +1 more source

An integrated platform for 2‐D and 3‐D optical and electrical mapping of arrhythmias in Langendorff‐perfused rabbit hearts

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Integrated multimodal platform for panoramic cardiac mapping in isolated heart experiments. On the left, an image of the experimental setup during data acquisition showing a Langendorff‐perfused rabbit heart surrounded by three optical cameras (CAM A, B and C) positioned 120° apart, each coupled with high‐power LEDs for panoramic
Jimena Siles   +8 more
wiley   +1 more source

In silico predictions of action potential propagation in doxorubicin cardiotoxicity: A parametric study using preclinical 3D magnetic resonance imaging‐based fibrotic left ventricle models

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Schematic overview of the study's methodology and key findings. In a preclinical swine model, doxorubicin administration induced cardiotoxicity, characterized by diffuse fibrotic remodelling and altered electrical function, as assessed by magnetic resonance (MR) imaging and electrophysiological mapping.
Javier Villar‐Valero   +7 more
wiley   +1 more source

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 299) [PDF]

open access: yes
This bibliography lists 96 reports, articles, and other documents introduced into the NASA scientific and technical information system in June ...

core   +1 more source

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