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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 ...
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.
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
The difference between pacemakers and ICDs is that pacemakers are also available as temporary units and are generally designed to correct slow heart rates, i.e. bradycardia, while ICDs are often permanent safeguards against sudden life-threatening arrhythmias. S-ICD lead and generator position Sketch of an already-implanted cardioverter ...
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 ]
A ventricular assist device (VAD) is an electromechanical device that provides support for cardiac pump function, which is used either to partially or to completely replace the function of a failing heart.
Nguyễn Văn Nghị (11 January 1909 in Hanoi – 17 December 1999 in Marseille) was a Vietnamese-French physician who was prominent among those credited with bringing Chinese medicine to the West [1] [2] [3]