Physiology 4610A/B Lecture Notes - Artificial Cardiac Pacemaker, Electrocardiography, Medical Device
8 Jan 2013
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Ischemia: is a restriction in blood supply to tissues, causing a shortage of oxygen and glucoseneeded for cellular metabolism (to keep tissue alive. Myocardial infarction (mi) commonly known as a heart attack, results from the interruption of blood supply to a part of the heart, causing heart cells to die. A pacemaker (or artificial pacemaker, so as not to be confused with the heart"s natural pacemaker) is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the beating of the heart. Systemic circulation is the part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart. A transient ischemic attack is a transient episode of neurologic dysfunction caused by ischemia (loss of blood flow) either focal brain, spinal cordor retinal without acute infarction (tissue death).
