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Topic: Artificial pacemaker

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	Pacemaker and Artificial Pacemaker (Site not responding. Last check: 2007-10-18)
		Journal of DermatologyImplantation of a permanent cardiac pacemaker is becoming common with the increase in the elderly population.
		PACEMAKER An artificial pacemaker is recommended when there is a problem that involves the heart's sinoatrial node (SA node), the heart's natural pacemaker.
		Artificial pacemaker A pacemaker (or "artificial pacemaker", so as not to be confused with the heart's natural pacemaker) is a medical device designed to regulate the beating of the heart.
	www.selectpacemaker.com /pacemakerrecall/artificialpacemaker (1227 words)

	Artificial pacemaker - Wikipedia, the free encyclopedia
		A pacemaker (or "artificial pacemaker", so as not to be confused with the heart's natural pacemaker) is a medical device designed to regulate the beating of the heart.
		The purpose of an artificial pacemaker is to stimulate the heart when either the heart's native pacemaker is not fast enough or if there are blocks in the heart's electrical conduction system preventing the propagation of electrical impulses from the native pacemaker to the lower chambers of the heart, known as the ventricles.
		The pacemaker generator is a hermetically sealed device containing a power source and the computer logic for the pacemaker.
	en.wikipedia.org /wiki/Artificial_pacemaker (1692 words)

	Pacemaker - Wikipedia, the free encyclopedia
		Cardiac pacemaker is a group of cells within the heart that together initiate contractions and set the pace of beating.
		Artificial pacemaker may be implanted to provide proper heart rhythm when the body's natural pacemaker does not function properly.
		In sports, a pacemaker or pacer is a competitor who enters an athletics race with little or no intention of winning, but purely to set a fast pace for other competitors to follow.
	en.wikipedia.org /wiki/Pacemaker (202 words)

	Cardiac pacemaker - Wikipedia, the free encyclopedia
		Artificial devices also called pacemakers can be used after damage to the body's intrinsic conduction system to produce these impulses synthetically.
		The key to the rhythmical firing of pacemaker cells is that, unlike muscle and neurons, these cells will slowly depolarise by themselves.
		As in all other cells, the resting potential of a pacemaker cell (-60mV to -70mV) is caused by a continuous outflow or "leak" of potassium ions through ion channel proteins in the membrane that surrounds the cells.
	en.wikipedia.org /wiki/Cardiac_pacemaker (1105 words)

	Dorlands Medical Dictionary
		an artificial cardiac pacemaker that delivers stimuli to the atrium at a fixed rate in the absence of sensed atrial activity; spontaneous cardiac activity causes inhibition of pacemaker output, termination of the current stimulation cycle, and initiation of a new cycle.
		an artificial cardiac pacemaker that delivers stimuli to the atrium at a fixed rate in the absence of sensed atrial activity; spontaneous cardiac activity triggers pacemaker output, which falls ineffectively in the myocardial refractory period and initiates a new pacemaker stimulation cycle.
		an artificial cardiac pacemaker that delivers stimuli to the ventricle at a fixed rate in the absence of sensed ventricular activity; spontaneous cardiac activity triggers pacemaker output, which falls ineffectively in the myocardial refractory period and initiates a new cycle of pacemaker stimulation.
	www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_p_01zPzhtm (3607 words)

	Post Pacemaker
		This code means the pacemaker is pacing the heart in the ventricle (first V) and sensing spontaneous depolarizations from the ventricle (second V) and that these spontaneous and sensed depolarizations are supposed to inhibit (I) the pacemaker from depolarizing.
		Note that the pacemaker does not sense this at all but continues on at its rate of 100 beats/minute (i.e., there is no break in the rhythm).
		The pacemaker generator does have a period of time after it fires during which it is refractory to stimulation (i.e., it has a refractory period).
	www.vmth.ucdavis.edu /cardio/cases/case14/post_pacemaker.htm (531 words)

	Artificial cardiac pacemakers
		An artificial pacemaker is an implantable device that mimics the actions of the nodes and conducting system, and helps to regulate the heart rate.
		Artificial pacemakers are successfully used to treat both sick sinus syndrome and heart block.
		An artificial cardiac pacemaker is a small battery-operated computer, called the pulse generator, which is connected to the heart via one or more pacing leads.
	www.betterhealth.vic.gov.au /bhcv2/bhcarticles.nsf/pages/Artificial_cardiac_pacemakers (1010 words)

	Coronary Angioplasty - Percutaneous Transluminal Coronary Angioplasty (PTCA)- The Doctors Lounge(TM)
		In most cases, the indication for permanent pacemaker placement is a slow heart rate (bradycardia) or a defect in the electrical conduction system of the heart (heart block) that causes the person symptoms.
		Pacemakers can also be placed in patients that are at high risk for one of these slow heart rhythms.
		External pacemakers can be used for initial stabilization of a patient, but implantation of a permanent pacemaker is usually required for most conditions.
	www.thedoctorslounge.net /cardiology/procedures/pacemaker.htm (957 words)

	Artificial pacemaker, the hearts pacemaker when it doesn't tick on its own.
		Artificial pacemakers are a two-part electrical system that includes a pulse generator (pacemaker) and one or two leads, or wires, which deliver impulses to the heart.
		An artificial pacemaker is roughly the size of a silver dollar and about as thick as 2 silver dollars together.
		Once the pacemaker is implanted, it is important that the patient be followed by a pacemaker clinic or a commercial group that specializes in pacemaker follow-up.
	www.heart-health-diets-and-exercises.com /artificial-pacemaker.html (1195 words)

	Living With a Pacemaker
		With advances in technology, artificial pacemakers today generally last eight to 10 years (depending upon the type of heart condition) and, in most cases, allow a child to lead a normal life.
		Pacemakers currently being manufactured should not be affected by these security devices, as long as its wearer moves through and away from the detector at a normal speed.
		Once the pacemaker has been implanted, children with pacemakers should be able to do the same activities everyone else in their age group is doing: living normally.
	www.healthsystem.virginia.edu /UVaHealth/peds_cardiac/lwp.cfm (1333 words)

	Heart Info - Pacemakers and ICDs: A Patient Guide (Site not responding. Last check: 2007-10-18)
		A pacemaker detect a heartbeat that is too slow or irregular and provides electrical signals that tell the heart to beat at a proper rate by delivering signals to the appropriate chambers of the heart.
		Another leading cause for pacemaker implantation is heart block-the failure of the electrical signal to reach the main pumping chambers of the heart, which in turn causes a slow heart rate.
		An artificial pacemaker or ICD is implanted by a minor surgical procedure performed under local anesthesia.
	www.heartinfo.com /ms/guides/1/main.html (1174 words)

	Artificial pacemaker at opensource encyclopedia (Site not responding. Last check: 2007-10-18)
		The purpose of an artificial pacemaker is to stimulate the heart when either the heart's native pacemaker is not fast enough or if there are blocks in the heart's electrical conduction system preventing the propogation of electrical impulses from the native pacemaker to the lower chambers of the heart, known as the ventricles.
		The first pacemaker was designed and built by the Canadian electrical engineer John Hopps in 1950, a substantial external device it was somewhat crude and also painful to the patient in use.
		One of the first true implantable pacemakers was completed in 1958 by the American Wilson Greatbatch.
	www.wiki.tatet.com /Artificial_pacemaker.html (1110 words)

	Topics in Depth : ep-history (Site not responding. Last check: 2007-10-18)
		During 1931-32, Albert Hyman employed the artificial pacemaker on small laboratory animals (rabbits, guinea pigs, and "one large dog") that had been brought to cardiac standstill through asphyxiation or other means.
		C, removal of the pacemaker needle was followed by a normal sinus rhythm corresponding in rate with that established by the artificial pacemaker.
		It was found however, that the reason certain dying hearts failed to respond to the artificial current was because the current was not strong enough in those particular cases, as some hearts require more than one thousandth of a volt.
	www.hrsonline.org /ep-history/topics_in_depth/topics/hymanpacemaker.asp (4052 words)

	Artificial pacemaker definition - Medical Dictionary definitions of popular medical terms
		Artificial pacemaker: A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm.
		An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within the body.
		Pacemakers may function continuously and stimulate the heart at a fixed rate or at an increased rate during exercise.
	www.medterms.com /script/main/art.asp?articlekey=7475 (423 words)

	Welcome to CJW Medical Center's Web Site
		The surgical insertion of an artificial pacemaker, which is a small, battery-operated device that helps maintain a normal heartbeat by sending electrical impulses to the heart.
		An artificial pacemaker is inserted when the body's natural pacemaker—the sinoatrial (SA) node—becomes defective due to heart disease, and causes the heart to beat too fast, too slow, or irregularly.
		Artificial pacemakers may also be used for malfunctions in the atrioventricular (AV) node—the portion of the heart’s electrical system that conveys signals from the SA node to the ventricles.
	healthlibrary.epnet.com /getcontent.aspx?siteid=83CDF2AE-1739-11D4-A2D1-00508B62BE1F&docid=/dsp/pacemaker (521 words)

	PACEMAKERS (Site not responding. Last check: 2007-10-18)
		An artificial pacemaker may be needed when the body's natural pacemaker is not sending proper signals to the heart muscle.
		One set of wires tells the pacemaker what the heart's contraction rate is. Another set of wires tells the heart to contract if the rate is too slow or too erratic.
		Pacemakers have allowed many patients who were affected by slow heartbeats to lead normal lives.
	www.metrohealth.org /HI/indexes/CARD3036.htm (556 words)

	AllRefer.com - pacemaker, artificial (Medicine) - Encyclopedia
		pacemaker, artificial, device used to stimulate a rhythmic heartbeat by means of electrical impulses.
		Implanted in the body when the heart's own electrical conduction system (natural pacemaker) does not function normally, the battery-powered device emits impulses that trigger heart-muscle contraction at a rate that is preset or is determined by demand.
		Most pacemakers run on lithium batteries, which need to be replaced about every 10 years.
	reference.allrefer.com /encyclopedia/P/pacemak.html (262 words)

	Pacemakers \| AHealthyMe.com
		An artificial pacemaker is a small device that helps your heart beat in a regular pattern, if it doesn't do so naturally.
		Artificial pacemakers are often prescribed to patients with sick sinus syndrome, a condition that makes the heart beat too slowly and, occasionally, too quickly.
		Each implantable pacemaker has two main parts, a "pulse generator" that emits the electrical signal and one or two "leads," or wires that carry the electricity to the heart.
	www.ahealthyme.com /topic/pacemaker (1138 words)

	Pacemaker - Page 1
		Pacemakers are most commonly used to correct an abnormally slow heartbeat by sending electrical impulses to one or more chambers of the heart.
		A permanent pacemaker is implanted into a patient’s chest during a minor surgical procedure.
		Temporary pacemakers are often used in emergency settings, or in the case of severely symptomatic bradycardia or tachycardia.
	heart.healthcentersonline.com /pacemaker/pacemaker.cfm (588 words)

	Artificial Pacemakers and ICD's (Site not responding. Last check: 2007-10-18)
		Artificial pacemakers are very successful in controlling sick sinus syndrome and heart block.
		Artificial pacemakers are strong enough to deal with normal daily activities, including most non-contact sports.
		Pacemakers are protected from electrical interference, although patients should discuss any concerns with their doctor.
	www.nevdgp.org.au /info/heartf/docs/art_pace.htm (1353 words)

	AllRefer Health - Pacemaker: Description (Artificial Pacemaker, Internal Pacemaker, Permanent Pacemaker)
		A pacemaker is a small, battery-operated electronic device which is inserted under the skin to help the heart beat regularly and at an appropriate rate.
		A pacemaker is often the treatment of choice for people who have a heart condition that causes their heart to beat too slowly (bradycardia).
		Less commonly, pacemakers may also be used to terminate an abnormally rapid heart rate (tachycardia).
	health.allrefer.com /health/pacemaker-info.html (578 words)

	[No title]
		Artificial Heart Pacemaker or Cardiac Pacemaker is a small (size of a pager), light weight battery-operated device that helps the heart to beat in a regular rhythm when the Natural Heart Pacemaker is malfunctioning or not functioning.
		Permanent (internal) Heart Pacemaker - This kind of Heart Pacemaker is implanted in a small pocket under your skin and is meant to be left in there for the rest of your life.
		Heart Pacemaker implantation is not only performed in older people, this procedure is widely used in children with Congenital Heart Disease in the conducting system of the heart.
	www.medsolution.com /content/surgery_cardiothoracic-permpacemkr.asp (1513 words)

	DaytonDailyNews: Dayton, Ohio, news and information
		A pacemaker is often the treatment of choice for people who have a heart condition that causes their heart to beat irregularly.
		Pacemakers are also used for people who have a rapid or irregular heart rate.
		Some medical and dental equipment might interfere with your pacemaker, so it is important to always let your health care providers know before having any treatment that you have a pacemaker in place.
	www.daytondailynews.com /search/healthfd/shared/health/adam/ency/article/007070.html (627 words)

	Pacemakers: Generating regular heartbeats - MayoClinic.com
		The latest advance in pacemakers is biventricular pacing, which is particularly valuable for people with congestive heart failure whose hearts' electrical systems have been damaged.
		Pacemaker surgery is usually performed under local anesthesia and typically takes about one or two hours.
		Because today's pacemakers are more sophisticated than their predecessors, pacemaker malfunction due to interference from electronics and security systems is rare.
	www.mayoclinic.com /health/pacemakers/HQ01165 (1396 words)

	pacemaker, artificial articles on Encyclopedia.com (Site not responding. Last check: 2007-10-18)
		Pacemakers Pacemakers, why they are used, what to expect during a procedure.
		pacemaker, artificial PACEMAKER, ARTIFICIAL [pacemaker, artificial] device used to stimulate a rhythmic heartbeat by means of electrical impulses.
		artificial life support ARTIFICIAL LIFE SUPPORT [artificial life support] systems that use medical technology to aid, support, or replace a vital function of the body that has been seriously damaged.
	www.encyclopedia.com /articles/09736.html (331 words)

	Artificial Pacemaker (Site not responding. Last check: 2007-10-18)
		Artificial Pacemaker Artificial Pacemaker A person's heartbeat is regulated by a small mass of cells called the sinoatrial node or sinus node located in the heart.
		The "natural" pacemaker of the heart is called the sinoatrial (S.A.) node or sinus node.
		The "natural" pacemaker of the heart is called the sinus node.
	www.vansd.org /alkweb/Curriculum/Health/IRP/artificial_pacemaker.html (230 words)

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