Abnormally slow heart rates result from breakdowns in two principal areas of the heart. First, the sinoatrial, or SA, node sets your "resting" heart rate, usually somewhere between 60 and 100 beats ...

Abnormally slow heart rates result from breakdowns in two principal areas of the heart. First, the sinoatrial, or SA, node sets your “resting” heart rate, usually somewhere between 60 and 100 beats ...

Eleven studies describing sinoatrial (SA) nodal, atrioventricular (AV) nodal or infra-Hisian conduction parameters in the setting of cocaine use were found. Fourteen studies and two case series ...

Researchers discovered that gene deserts, non-coding DNA regions, regulate heart and embryo development through enhancer ...

Figure 1: Desensitization of the acetylcholine response in the sinoatrial pacemaker cell of the heart. Figure 2: Diagram showing the crosstalk between the M2 and M3 muscarinic acetylcholine ...

There are several key areas that conduct electrical signals through the heart – the sinoatrial node, atrioventricular node, and bundle branches all work like players in an orchestra to keep a ...

Conduction system abnormalities and sudden death Conduction system abnormalities have been described in a number of SCDs in athletes, usually due to premature aging, sclerosis of the left side of the ...

Abstract and Introduction Rationale for i.v. Antihypertensive Selection Clinical Pharmacology of i.v. Antihypertensives References There are potential concerns with the use of sodium nitroprusside ...

Your heart is made up of two atria and two ventricles. Typically, the signal for your heartbeat starts in the right atrium in the sinoatrial node and travels to both the left and right ventricles ...

More testing revealed that, in addition to a rapid heart rate, she had sick sinus syndrome, a condition in which the heart's sinoatrial node is damaged and can't produce normal heartbeats.