Ads
related to: cardiac pacemaker depolarization side effects in adults- Prepare For Your Visit
What to bring to your visit
plus heart & vascular resources
- Should I See a Heart Doc
Talk to your doc about your heart
and learn what to ask
- Find a Doctor
Meet with our experts to diagnose
your symptoms and receive treatment
- Patient Testimonials
Hear from our patients
about their Ohio State experience
- Prepare For Your Visit
Search results
Results from the WOW.Com Content Network
A pacemaker action potential is the kind of action potential that provides a reference rhythm for the network. The pacemaker potential is the slow depolarization because of sodium influx, and once threshold has been reached the continued depolarization due to calcium influx. [ 1 ]
These pacemakers will keep a patient alive until the emergency team arrives. [citation needed] An example of premature ventricular contraction is the classic athletic heart syndrome. Sustained training of athletes causes a cardiac adaptation where the resting SAN rate is lower (sometimes around 40 beats per minute).
The cardiac pacemaker is the heart's natural rhythm generator. It employs pacemaker cells that produce electrical impulses, known as cardiac action potentials, which control the rate of contraction of the cardiac muscle, that is, the heart rate. In most humans, these cells are concentrated in the sinoatrial (SA) node, the primary pacemaker ...
The duration of this slow diastolic depolarization (pacemaker phase) thus governs the cardiac chronotropism. It is also important to point out that the modulation of the cardiac rate by the autonomic nervous system also acts on this phase. Sympathetic stimuli induce the acceleration of rate by increasing the slope of the pacemaker phase, while ...
[1] [3] In general, the symptoms of the syndrome are a combination of decreased cardiac output, loss of atrial contribution to ventricular filling, loss of total peripheral resistance response, and nonphysiologic pressure waves. [2] [4] [5] Individuals with a low heart rate prior to pacemaker implantation are more at risk of developing ...
A pacemaker, also known as an artificial cardiac pacemaker, is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart. Each pulse causes the targeted chamber(s) to contract and pump blood, [ 3 ] thus regulating the function of the electrical conduction system of the heart .
The pacemaker current (I f, or I Kf, also called funny current) is an electric current in the heart that flows through the HCN channel or pacemaker channel. Such channels are important parts of the electrical conduction system of the heart and form a component of the natural pacemaker .
The American Heart Association recommends that the pacemaker be shielded as much as possible, and moved if it lies directly in the radiation field. [7] Short-wave or microwave diathermy uses high-frequency, high-intensity signals. These may bypass pacemaker's noise protection and interfere with or permanently damage the pulse generator. [7]
Ads
related to: cardiac pacemaker depolarization side effects in adults