implantable cardioverter-defibrillator…

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heart, section, the middle, heart, normal heart rhythm, conduction system, the heart, icd an implantable cardioverter-defibrillator, icd, device designed to quickly detect a life-threatening, rapid heartbeat coming, bottom chamber, the heart, converts the abnormal rhythm back to normal by delivering an electrical shock, heart, an icd, effectively, prevent sudden cardiac death, an icd, minicomputer that consists of, a pulse generator, batteries, a capacitor, send a powerful shock, heart, an electronic logic circuit to tell the icd, to discharge, lead electrodes placed, in the heart, small electrodes placed under the skin, to sense the cardiac rhythm, deliver the shock, heart muscle, all icds have a built-in pacemaker, pacing necessary to support the heart, instances, after a shock, a very slow heart beat, pacemaker also allows the device to correct heartbeats, too fast, icd continously monitors the heartbeats, regularity, delivers a shock, heart, it senses a life-threatening rhythm, implantation of a pacemaker-type icd, electrodes, inserted, the veins, heart, pulse generator is surgically buried under the skin, the chest, generally below the left collarbone, who needs an icd, people, lower chamber, the heart either suddenly starts beating, disorganized manner, ventricular fibrillation, vf, starts beating very rapidly, ventricular tachycardia, vt, vf, vt, make the heart stop pumping blood, leading the person to a sudden loss of consciousness, death, abnormal rhythms, vt, vf, require emergency treatment, best treated in hospital coronary care units, in these units, vt, vf, converted back, normal rhythm, electric shock given across the chest, external defibrillation, many episodes of vt, vf, occur outside hospitals, icds often die, defibrillation is not immediately available, icds, people at risk of sudden death, survived a cardiac arrest, due to vf not triggered by a recent heart attack, life-threatening episodes of vt, survivors of a heart attack, weakened pumping function, structural defects, the heart muscle, dilated cardiomyopathy, hypertrophic cardiomyopathy, unexplained fainting episodes have occurred, a reduced pumping function, the heart, assessed, a left ventricular ejection fraction, lvef, 35%, an electrophysiological study, eps, required to make the decision, icd implantation, eps, special test conducted by a cardiologist, a specialization in arrhythmias, eps measures how much the heart is at risk, an event that could prove fatal, what to expect after icd implantation, recovery time, icd implantation is quite short, hospital stays, rarely longer than 1 day, patients quickly return to prior activity levels, full recovery of activity, expected in, 4 to 6 weeks, discharged, hospital, a wallet card listing the specifications of icd, providing contact information, emergencies, wallet card should always be, go out, make regular visits, icd, monitored, monitoring shows whether the device is sensing the heartbeat properly, how many shocks have been delivered, how much power is left, in the batteries, icd batteries, designed to last 5 to 8 years, to run down, icd generator must be replaced, minor surgery, icd generator is metal, detected by metal detectors those in airports, public places, safety checks, air travel, public events, admission to certain areas, wallet card, security personnel, prevent setting off any alarms, icds still need to follow doctor's advice, diet, exercise, benefits, the icd, among patients considered good candidates, an icd, icd has shown to prolong life by preventing sudden death, device provides peace of mind, relieving concerns, fainting spells, risks of death, most patients adapt, uncertainty, the shocks, most patients, resume driving, potential risks, the icd, icd is implanted, a surgical procedure which in might result in death, most common problem, the icd, it sometimes delivers shocks, not need them, though a shock lasts a very short time, feel it, every shock feel, notified to doctor, potential icd malfunctioning, prevented by the incorporation of audible alerts, programmed by electrophysiologist, icd alert goes off, should promptly contact doctor, warning, in june 2005, certain icd models, biventricular pacemaker-defibrillators were recalled by the manufacturer, a circuitry flaw, prevent the devices from delivering therapeutic electrical shocks, problem may result in patient death, two deaths, believed to be associated, the malfunction, although the, food, drug administration, did not make any specific recommendations, agency encourages patients who, have such a device to ask health care doctor, they should have it removed, replaced, devices, recall, prizm 2 dr, model 1861, manufactured on, april 16, contak renewal, model h135, manufactured on, august 26, contak renewal 2, model h155, manufactured on, august 26, us food, drug administration, fda issues nationwide notification of recall of certain guidant implantable defibrillators, cardiac resynchronization therapy defibrillators, national press office, june 17, paper p05-29, al-khatib sm, anstrom kj, eisenstein el, et al, clinical, economic implications, the multicenter automatic defibrillator implantation trial-ii, ann intern med, 2005 apr 19, 142(8), 593-600, goldstein ne, lampert r, bradley e, lynn j, krumholz hm, implantable cardioverter defibrillators in end-of-life care, ann intern med, 2004 dec 7, 141(11), 835-8.