
	Where results make sense

Topic: Heart pacemaker

Related Topics

Artificial pacemaker

Cardiac pacemaker

Rapper

	Cardiac pacemaker - Wikipedia, the free encyclopedia
		The contractions of the heart are controlled by electrical impulses, these fire at a rate which controls the beat of the heart.
		Although all of the heart's cells possess the ability to generate these electrical impulses (or action potentials), a specialised portion of the heart, called the sinoatrial node, is responsible for the whole heart's beat.
		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 (1047 words)

	Cautery protection circuit for a heart pacemaker - Patent 4038990
		Typically, such pacemakers are implanted in the pectorial region or in the abdominal region of the patient by a surgical procedure, whereby an incision is made in such region and the pacemaker with its own internal power supply, is inserted within the patient's body.
		2, the artificial heart pulse generator 10 and its electrode 14 are disposed in the path of the field 18, whereby a signal is readily induced into the output portion of the heart pacemaker circuitry.
		It is a further object of this invention to provide a cautery protection circuit for a heart pacemaker that places a significantly less impedance and in particular, inductance upon the heart stimulating output of the pacemaker, whereby the battery life of the pacemaker is extended and the shape of the stimulating pulse is not distorted.
	www.freepatentsonline.com /4038990.html (2744 words)

	Read about the history of pacemakers, from the earliest to the most recent technological advances
		Pacemakers are prescribed for people of all ages whose hearts beat too slowly.
		Pacemakers detect the slow heart rate and send electrical impulses to the heart to stimulate the heart muscle to beat faster.
		Pacemaker and lead implants could now be done without opening the chest cavity or using general anesthesia.
	www.medtronic.com /brady/patient/pacemaker_history.html (744 words)

	Heart Failure Pacemaker Medical Technology Rating (Site not responding. Last check: 2007-10-26)
		The heart is a hollow muscle that consists of four chambers, called the atria (the top two chambers) and the ventricles (the bottom two chambers).
		Heart resynchronized therapy involves the use of a special pacemaker that stimulates or paces both of the heart's ventricles.
		The heart failure pacemaker consists of three parts: The generator used to create the electric impulses, the lead wires that carry the impulses, and the electrodes connecting the lead wires to the heart.
	www.tennesseehealth.com /main-before-you-buy/MedicalTechnologies/Medical_Value_Index/HEART_FAILURE_PACEMAKER_MEDICAL_TECHNOLOGY_RATING.HTM (1224 words)

	ICU-USA - Tour - Pacemaker
		A pacemaker is a device that produces a low electrical current that stimulates the heart muscle to beat.
		Pacemakers may also be used in patients who are at high risk to develop slow heart rates.
		The insertion of internal pacemakers may be associated with minor bleeding, poor positioning of the special pacemaker catheter, and rarely a collapsed lung.
	www.icu-usa.com /tour/procedures/pacemaker.htm (358 words)

	Child Health Library - Cardiovascular Disorders - Living With a Pacemaker
		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.
		As the heart pushes blood through the arteries, the arteries expand and contract with the flow of the blood, and this can be felt in various points in the body as a pulse.
		As the heart forces blood through the arteries, feel the beats by firmly pressing on the arteries, which are located close to the surface of the skin at certain points of the body.
	www.chp.edu /greystone/cardiac/lwp.php (1326 words)

	Pacemakers
		For the heart to beat properly, the signal must travel down a specific path to reach the ventricles (the heart's lower chambers).
		Heart rhythm problems may occur when the natural pacemaker is defective, causing the heartbeat to be too fast, too slow or irregular.
		The term "artificial pacemaker" is used for a small battery-operated device that helps the heart beat in a regular rhythm.
	www.americanheart.org /presenter.jhtml?identifier=24 (1090 words)

	Pacemakers - Texas Heart Institute Heart Information Center
		When an electrical impulse is released from this natural pacemaker, it causes the upper chambers of the heart (the atria) to contract.
		Pacemakers can help pace the heart in cases of slow heart rate, fast and slow heart rate, or a blockage in the heart's electrical system.
		Pacemakers may also be used to stop the heart from triggering impulses or from sending extra impulses.
	www.tmc.edu /thi/pacemake.html (929 words)

	Heart Info - Pacemakers and ICDs: A Patient Guide
		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.
		A pacemaker is needed when the function of the sinus node becomes too slow from age, heart disease, or heart medications.
		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.
	www.heartinfo.org /ms/guides/1/main.html (1159 words)

	Arrhythmia - Texas Heart Institute Heart Information Center
		Heart block happens when the SA node's electrical signal cannot travel to the heart's lower chambers (the ventricles).
		is a procedure that uses a catheter and a device for mapping the electrical pathways of the heart.
		Texas Heart Institute, Texas Heart Institute Journal, THI, Heart Owner's, The Heart of Discovery, and Leading With the Heart are members of the family of trademarks of the Texas Heart Institute.
	www.tmc.edu /thi/arrhythm.html (1305 words)

	Other Symptoms of Heart Rhythm Disorders
		Heart block occurs when the electrical impulse that originates in the upper chambers of the heart is unable to pass to the lower chambers of the heart at the right pace.
		Slow heart rates can be the result of certain medications, congenital heart diseases or the degenerative processes of aging.
		As the heart rate declines, there is insufficient blood flow to the brain, causing feelings of lightheadedness and, sometimes, fainting.
	www.hrspatients.org /patients/signs_symptoms/too_slow.asp (787 words)

	Heart Info - Pacemaker Patients Urged to Consult Their Doctor
		On Monday, the company alerted doctors that nine older models of its pacemakers have a defect that could cause them to malfunction, possibly resulting in death, particularly for patients who depend on their pacemaker to keep their heart beating.
		Of the 78,000 pacemakers sold, 69 exhibited a problem, with five patients suffering dizziness or temporary loss of consciousness.
		However, Prystowsky added that if the pacemaker was implanted to deal with other intermittent heart problems, such as a slow heart beat, he would not replace the device, but only replace it when it reached the end of its battery life.
	www.heartinfo.org /ms/news/526938/main.html (1173 words)

	Arrythmia: Getting a Pacemaker
		A pacemaker is actually a two-part system consisting of a pulse generator and a pacing lead.
		Most pacemakers are recommended when an individual experiences symptoms (such as fatigue, weakness, lightheadedness, shortness of breath or fainting) related to an inappropriately slow heart rate.
		Your pacemaker cannot be damaged by using properly operating household appliances, such as microwave ovens, electric blankets and most power tools.
	www.arrhythmia.org /getting_a_pacemaker.html (1124 words)

	Study Says Pacemaker/Defibrillator Devices Significantly Reduce Death & Hospitalization in Heart Failure Patients
		Researchers conclude that a special kind of heart pacemaker combined with a defibrillator significantly reduces the risk of death and hospitalization in certain patients with severe heart failure, compared to drug therapy alone.
		Gottlieb says the pacemaker, whether alone or combined with a defibrillator, probably played a role in reducing hospitalizations, because it can relieve the symptoms of heart failure, such as congestion in the lungs.
		Heart failure, which can result from a severe heart attack, is a progressive disorder in which the heart loses its ability to pump blood effectively.
	www.umm.edu /news/releases/pacemaker.html (591 words)

	Treating Abnormal Heart Rhythms: Pacemaker
		A pacemaker is a small device that sends electrical impulses to the heart muscle to maintain a suitable heart rate and rhythm.
		The dual chamber pacemaker has one lead in the upper chamber and one lead in the lower chamber of the heart.
		Pacemakers are used most commonly to treat bradyarrythmias, which are slow heart rhythms that may arise from disease in the heart's electrical conduction system (such as the SA node, AV node or HIS-Purkinje system).
	www.webmd.com /content/pages/9/1675_57808.htm (1182 words)

	Pacemaker - Heart Disease and other cardiovascular conditions on MedicineNet.com (Site not responding. Last check: 2007-10-26)
		The purpose of the pacemaker is to maintain heartbeats so that adequate oxygen and nutrients are delivered through the blood to the organs of the body.
		The heart is an organ consisting of four chambers that pump blood.
		The heartbeat (heart rate) is normally governed by the frequency of electrical signals which are generated by the heart's natural pacemaker called the SA node.
	www.medicinenet.com /pacemaker/article.htm (666 words)

	Pacemaker Center - HeartCenterOnline:
		A pacemaker is a device implanted into a patients chest to send electrical signals to the heart, telling it when to contract (or beat).
		Pacemakers are being combined with implantable defibrillators (ICDs) to detect and correct either a heart beat that is either abnormally fast or slow in the same patient.
		A biventricular pacemaker is a type of pacemaker being used in the treatment of heart failure.
	heart.healthcentersonline.com /pacemaker (310 words)

	CHFpatients.com - Pacemakers
		This kind of pacemaker therapy is called VRT for "ventricular resynchronization therapy" or CRT for "cardiac resynchronization therapy." The kind of pacemaker used is called a "biventricular pacemaker" because it "paces" both your heart's ventricles (pumping chambers).
		One group had their VRT pacemaker turned on while the other group's pacemakers were not turned on (unknown to them).
		Heart failure was seen more often in patients with single chamber pacers (35%) than in those with a double chamber pacer (18%); and in those with chronic a-fib (42%) compared to those in normal heart rhythm (21%).
	www.chfpatients.com /implants/pacemakers.htm (6853 words)

	Pacemakers
		The heart's "natural" pacemaker is called the sinoatrial (SA) node or sinus node.
		For the heart to beat properly, the signal must travel down a specific path to reach the ventricles, the heart's lower (pumping) chambers.
		The natural pacemaker may be defective, causing the heartbeat to be too fast, too slow or irregular.
	www.americanheart.org /presenter.jhtml?identifier=4676 (888 words)

	Find out what a pacemaker is and how it works to relieve bradycardia
		When people refer to a pacemaker, they are actually discussing a pacing system: a pacemaker, a pacing lead, and programmer.
		The pacemaker is a small metal case that contains electronic circuitry and a battery.
		By increasing the heart rate, the symptoms of bradycardia are often eliminated.
	www.medtronic.com /brady/patient/whatis_pacemaker.html (251 words)

	pacemaker
		They put a catheter in the vein in the back of the hand, I was then wheeled to the theatre on the bed, and I was transferred on to the operating table, they then gave me a local anaesthetic, and the procedure began.
		Then he finds the correct vein to put the electrodes down to the heart (it was a dual-chamber pacing) the team are monitoring your heart all the time and you can watch the whole operation on the monitor screens if you wish.
		They then connect the Medtronic pacemaker to the electrodes and tucked them just under the skin and you are stitched up with dissolvable stitches, a dressing is put over the wound.
	www.geocities.com /g4epnuk/pacemaker.html (299 words)

	Biologic Pacemaker Reprograms Heart
		Most other heart cells contain a potassium channel that makes it harder for them to "fire" and generate electricity on their own.
		When these pacemaker cells become damaged, a man-made electronic pacemaker must be implanted to restore the heart's rhythm.
		According to the researchers, about 250,000 of these electronic pacemakers are implanted each year in the U.S. But in initial tests in guinea pigs, researchers found that genetically blocking the potassium channel in the non-pacemaker heart cells allowed these cells to reconnect with their pacemaker past.
	www.webmd.com /content/article/50/40442.htm (343 words)

	Pacemaker \| Heart Center - Wake Forest University Baptist Medical Center
		The leads are wires that go from the generator through a large vein to the heart, where the wires are anchored.
		After the pacemaker leads have been positioned in the heart under X-ray guidance, they are then connected to the generator.
		Most patients are able to go home within 1 day of the pacemaker insertion procedure, if there are no other medical issues requiring further hospitalization.
	www1.wfubmc.edu /heart/pacemaker.html (312 words)

	Pacemaker (Site not responding. Last check: 2007-10-26)
		The heart has the remarkable ability to beat rhythmically approximately 100,000 times a day and pumps about five quarts of blood each minute or 75 gallons of blood every hour.
		The heart’s natural pacemaker is called the Sinoatrial or SA node and is located in the upper right chamber of the heart.
		This regular contraction of the heart forces the blood out of the heart and into all parts of the body.
	www.helenacardiology.com /pacemaker.htm (808 words)

	Cardiac Pacemakers From the Patient's Perspective -- Wood and Ellenbogen 105 (18): 2136 -- Circulation
		The pacemaker itself is placed under the skin below the collarbone.
		Wires are placed through the blood vessel beneath the collarbone to the heart and are connected to the pacemaker.
		A dual chamber pacemaker is shown here that has wires to both the upper (atrium) and lower (ventricle) chambers of the right side of the heart.
	circ.ahajournals.org /cgi/content/full/105/18/2136 (773 words)

	Biventricular Heart Pacemaker Implant by MedicineNet.com (Site not responding. Last check: 2007-10-26)
		In the normal heart, the heart's lower chambers (ventricles) pump at the same time and in sync with the heart's upper chambers (atria).
		Pacemakers regulate the right atrium and right ventricle to maintain a good heart rate and keep the atrium and ventricle working together.
		In addition, the heart failure patient may or may not need this type of pacemaker to treat slow heart rhythms and may or may not need an internal defibrillator (implantable cardioverter defibrillator, or ICD), which is designed to treat people at risk for sudden cardiac death or cardiac arrests.
	www.medicinenet.com /biventricular_pacemaker/article.htm (813 words)

	Pacemaker Ekg Results (Site not responding. Last check: 2007-10-26)
		An electrocardiogram (ECG / EKG) is an electrical recording of the heart and is used in the investigation of heart...
		Case 1: 54 year old man with a heart transplant: The EKG shows: Sinus rhythm with a right bundle branch block and a left anterior hemiblock.
		pacemaker spike: a vertical line on the EKG that indicates the pacemaker has discharged...
	www.ekg-machines.net /directory/pacemaker-ekg.html (365 words)

	Keeping Pace with Heart Technology
		New cellular pacemakers can shock a heart back to normal rhythm and then automatically send a real-time report from the patient's home to the doctor's office.
		"Slow heart rhythms usually occur as a result of two major kinds of problems: One is the development of disease affecting the electrical system of the heart - the natural pacemaker of the heart, called the sinus node.
		That causes the pacemaker to perform some basic actions that can be measured." The patient then transmits the data from the box through the telephone.
	healthlink.mcw.edu /article/1031002317.html (920 words)

	Bradycardia - Pacemakers and Heart Arrhythmias
		Bradycardia is a condition in which the heart beats too slowly – usually less than 60 beats per minute.
		Bradycardia may be caused by a problem with your heart's natural pacemaker (S-A node) or a problem with your heart's electrical pathways.
		Doctors may prescribe medications, a pacemaker, or both for the treatment of bradycardia.
	www.guidant.com /webapp/emarketing/compass/comp.jsp?lev1=brady&lev2=glance (115 words)

Try your search on: Qwika (all wikis)