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The sinoatrial node (SA node) is the primary pacemaker of the heart. It is a region of cardiac muscle on the wall of the upper right atrium near to the superior vena cava entrance. The cells that make up the SA node are specialized cardiomyocytes known as pacemaker cells that can spontaneously generate cardiac action potentials.
The primary purpose of a pacemaker is to maintain an even heart rate, either because the heart's natural cardiac pacemaker provides an inadequate or irregular heartbeat, or because there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow a cardiologist to select the optimal pacing ...
This page was last edited on 2 January 2015, at 22:11 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Implantable devices such as the artificial cardiac pacemaker and implantable cardioverter-defibrillator are capable of measuring a "far field" signal between the leads in the heart and the implanted battery/generator that resembles an ECG signal (technically, the signal recorded in the heart is called an electrogram, which is interpreted ...
Brain pacemaker, a device to treat movement disorders, epilepsy, depression, or other conditions Cardiac pacemaker , cells within the heart that initiate contractions and set the pace of beating Diaphragmatic pacemaker , a device used to help patients breathe through pacing of the diaphragm
At Beth Israel, Parsonnet served as Chief of Surgery at Beth Israel, Medical director of the Pacemaker and Defibrillator Evaluation Center and director of Surgical Research. [1] Parsonnet, helped co-found the North American Society of Pacing and Electrophysiology. [6] He has authored over 600 articles and 5 books. [1] He also held five patents. [1]
An experimental Wikipedia edition in the obsolete chữ Nôm script began in October 2006 at the Wikimedia Incubator. [6] It was deleted in April 2010. [7] [non-primary source needed] The Vietnam Wikimedians User Group supports the development of the Vietnamese Wikipedia and other Vietnamese-language Wikimedia projects.
The approach to primary prevention promotes a healthy diet, exercise, limited alcohol consumption, and smoking cessation. [ 5 ] Exercise is an effective preventative measure for cardiac arrest in the general population but may be risky for those with pre-existing conditions. [ 71 ]