Angiograms are taken to localise plaques. Technique for unblocking the occluded arteries that have atherosclerotic plaque. Implant devices operated by battery are available for patients suffering from arrhythmic disorder. Shaped electrodes pressed across the chest. This is called defibrillation the electric shock is given through large-paddle Used during open-heart surgery in which a roller pump performs the function of heart whereas the function of lung is performed by oxygenator.Ĭompletely takes over the function of both heart and lung, and the blood circulates through the body without passing through the heart.įibrillation is abnormal and asynchronous contraction of cardiac muscles so that the efficiency of heart pumping is greatly reduced or completely lost.Ītrial fibrillation may occur in myocardial infarction, and in rheumatic heart disease.Ī strong electrical current passed across the chest for a short duration can stop ventricular fibrillation. Used during cardiac failure to maintain stroke volume and cardiac output. Inflated during diastole it enhances the blood flow in the proximal and distal aorta also increases coronary, renal and cerebral blood flow.ĭeflation of balloon at the onset of systole helps in offloading the ventricle and to increase its volume. Intra-aortic balloon counter pulsation is used to improve blood supply to heart wall and other organs.īalloon is placed in the descending aorta connected to an external pumping machine to inflate and deflate it rhythmically with helium. Used to know the binding acidity of hormones with their specific receptors and the time for which hormone receptor complex remains on the plasma membrane and time taken for its internalization. Also used for sealing of bleeding arteries in peptic ulcers, destruction of abnormal cells in various parts of the body such as the cervix and treatment of endometriosis. Widely used for operations on retina, like, the repair of retinal injury and removal of its tumor. Can be argon laser, neon laser, or carbondioxide laser. Medical Lasers (light amplification by stimulated emission of radiation) A concentrated beam of light radiation (with intense energy) is used as a light knife to cut the tissue without causing damage beyond the target area. A normal rate of heart beat suppresses the pacemaker. Two basic type are : fixed rate and demand type :įixed rate pacemakers discharge impulses at a steady rate irrespective of the hearts activity.ĭemand type pacemaker discharges impulse only when the heart rate slows or a beat is missed. Electrode consists of fine metallic wire enclosed in a thin biocompatible plastic layer, connected to pulse generator, its tip is extended to AV-node (in case of Stokes-Adam Syndrome) through pre-caval vein. Pulse generator is a sealed box containing lithium halide cells to provide power placed under skin below collar by surgery. Permanent pacemakers consists of a Pulse generator and an electrode. Temporary pacemaker : is used for few minutes to few hours to treat transient heart block and other arrhythmias electrical current is passed by electrodes placed on the chest wall.It is of two types : Temporary and Permanent Introduced by Chardack (1960) supplies electrical impulses to the heart to maintain the heartbeat at a regular rate when the heart beat drops from normal of 72-80 to low levels like 30-40. Artificial pacemaker is implanted when a person’s SA node does not function properly.
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