Look up pacemaker in Wiktionary, the free dictionary.
A pacemaker is a medical device that regulates the beating of the heart.
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Pacemaker may also refer to:
A pacemaker is a medical device that regulates the beating of the heart.
Pacemaker may also refer to:
Cell most often refers to:
Terminal may refer to:
A pacemaker, also known as an artificial cardiac pacemaker, is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart. Each pulse causes the targeted chamber(s) to contract and pump blood, thus regulating the function of the electrical conduction system of the heart.
Defibrillation is a treatment for life-threatening cardiac arrhythmias, specifically ventricular fibrillation (V-Fib) and non-perfusing ventricular tachycardia (V-Tach). A defibrillator delivers a dose of electric current to the heart. Although not fully understood, this process depolarizes a large amount of the heart muscle, ending the arrhythmia. Subsequently, the body's natural pacemaker in the sinoatrial node of the heart is able to re-establish normal sinus rhythm. A heart which is in asystole (flatline) cannot be restarted by a defibrillator; it would be treated only by cardiopulmonary resuscitation (CPR) and medication, and then by cardioversion or defibrillation if it converts into a shockable rhythm.
DDD or Triple D may refer to:
The cardiac pacemaker is the heart's natural rhythm generator. It employs pacemaker cells that produce electrical impulses, known as cardiac action potentials, which control the rate of contraction of the cardiac muscle, that is, the heart rate. In most humans, these cells are concentrated in the sinoatrial (SA) node, the primary pacemaker, which regulates the heart’s sinus rhythm.
Pacing may refer to:
An implantable cardioverter-defibrillator (ICD) or automated implantable cardioverter defibrillator (AICD) is a device implantable inside the body, able to perform defibrillation, and depending on the type, cardioversion and pacing of the heart. The ICD is the first-line treatment and prophylactic therapy for patients at risk for sudden cardiac death due to ventricular fibrillation and ventricular tachycardia.
The sinoatrial node is an oval shaped region of special cardiac muscle in the upper back wall of the right atrium made up of cells known as pacemaker cells. The sinus node is approximately 15 mm long, 3 mm wide, and 1 mm thick, located directly below and to the side of the superior vena cava.
Third-degree atrioventricular block is a medical condition in which the electrical impulse generated in the sinoatrial node in the atrium of the heart can not propagate to the ventricles.
Feeder may refer to:
Wilson Greatbatch was an American engineer and pioneering inventor. He held more than 325 patents and was a member of the National Inventors Hall of Fame and a recipient of the Lemelson–MIT Prize and the National Medal of Technology and Innovation (1990).
An atomic battery, nuclear battery, radioisotope battery or radioisotope generator uses energy from the decay of a radioactive isotope to generate electricity. Like a nuclear reactor, it generates electricity from nuclear energy, but it differs by not using a chain reaction. Although commonly called batteries, atomic batteries are technically not electrochemical and cannot be charged or recharged. Although they are very costly, they have extremely long lives and high energy density, so they are typically used as power sources for equipment that must operate unattended for long periods, such as spacecraft, pacemakers, underwater systems, and automated scientific stations in remote parts of the world.
John Alexander Hopps, was a co-developer of both the first artificial pacemaker and the first combined pacemaker-defibrillator, and was the founder of the Canadian Medical and Biological Engineering Society (CMBES). He has been called the "Father of biomedical engineering in Canada."
Anthony J. Adducci was a pioneer of the medical device industry in Minnesota. He is best known for co-founding Cardiac Pacemakers, Inc., the company that manufactured the world's first lithium battery-powered artificial pacemaker. The lithium-iodide cell revolutionized the medical industry and is now the standard cell for pacemakers.
Albert Salisbury Hyman, a Harvard-trained New York cardiologist, together with his brother Charles, constructed in 1930-1932 an electromechanical device which was one of the earliest artificial pacemakers. The device was reportedly tested on experiment animals and at least one human patient.
Adrian Kantrowitz was an American cardiac surgeon whose team performed the world's second heart transplant attempt at Maimonides Medical Center in Brooklyn, New York on December 6, 1967. The infant lived for only six hours. At a press conference afterwards, Kantrowitz emphasized that he considered the operation to have been a failure.
Pacemaker syndrome is a condition that represents the clinical consequences of suboptimal atrioventricular (AV) synchrony or AV dyssynchrony, regardless of the pacing mode, after pacemaker implantation. It is an iatrogenic disease—an adverse effect resulting from medical treatment—that is often underdiagnosed. In general, the symptoms of the syndrome are a combination of decreased cardiac output, loss of atrial contribution to ventricular filling, loss of total peripheral resistance response, and nonphysiologic pressure waves.
Pacemaker failure is the inability of an implanted artificial pacemaker to perform its intended function of regulating the beating of the heart. A pacemaker uses electrical impulses delivered by electrodes in order to contract the heart muscles. Failure of a pacemaker is defined by the requirement of repeat surgical pacemaker-related procedures after the initial implantation. Most implanted pacemakers are dual chambered and have two leads, causing the implantation time to take longer because of this more complicated pacemaker system. These factors can contribute to an increased rate of complications which can lead to pacemaker failure.
Cardiac Pacemakers, Inc. (CPI), doing business as Guidant Cardiac Rhythm Management, manufactured implantable cardiac rhythm management devices, such as pacemakers and defibrillators. It sold microprocessor-controlled insulin pumps and equipment to regulate heart rhythm. It developed therapies to treat irregular heartbeat. The company was founded in 1971 and is based in Saint Paul, Minnesota, and is presently a subsidiary of Boston Scientific.