heart-lung machine

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heart-lung machine

 
a mechanical device that temporarily takes over the functions of the heart and lungs; it is used as an aid in some surgeries, especially cardiovascular surgery. The “heart” of the machine is a pump that draws blood from the patient's vessels before it reaches the heart. The blood is routed through a “lung” chamber (usually made of plastic), where it receives oxygen. The oxygenated blood is then returned to the patient's vessels and pumped through the circulatory system. (This method of circulating the blood outside the patient's body is known as extracorporeal circulation.) Called also pump oxygenator.

heart-·lung ma·chine

a device incorporating a blood pump (artificial heart) and a blood oxygenator (artificial lung) to provide extracorporeal circulation and oxygenation of the blood during cardiac surgery.

heart-lung machine

(härt′lŭng′)
n.
An apparatus through which blood is diverted in order to oxygenate it and pump it throughout the body, used especially during heart surgery to maintain circulation until normal heart and lung function are restored.

heart-lung machine

an apparatus consisting of a pump and an oxygenator that takes over the functions of the heart and lungs, especially during open heart surgery. The blood is shunted from the venous system through an oxygenator and returned to the arterial circulation.

heart-lung machine

Extracorporeal circulation, pump-oxygenator Heart surgery A device with a pump and a blood oxygenator, used during open heart–eg, cardiothoracic and cardiovascular surgery; the HLM does the work of the heart–pump blood and lungs–oxygenating the blood, by routing the blood through the machine before returning it to the arterial circulation

heart-lung ma·chine

(hahrt-lŭng mă-shēn')
A device incorporating a blood pump (artificial heart) and a blood oxygenator (artificial lung) to provide extracorporeal circulation and oxygenation of the blood during cardiac surgery.

heart-lung machine

Enlarge picture
HEART-LUNG MACHINE
A device that maintains the functions of the heart and lungs while either or both are unable to continue to function adequately. The device pumps, oxygenates, and removes carbon dioxide from the blood. In animal studies and in open heart surgery, these machines take over the function of the heart and lungs while these organs are being treated or possibly replaced. The function of the heart-lung machine is also called heart-lung bypass. See: illustration

heart-lung machine

A bulky device that is able to carry out the functions of the heart and the lungs, during the period of a surgical operation on the heart. The machine includes atraumatic rotary pumps powerful enough to maintain the circulation through the body, blood filters for particles, bubbles and foam, a blood oxygenator and carbon dioxide extractor, a cooler and a re-heater. Blood from the patient's main veins is carried in tubes to the machine and the machine output is connected to the main body artery (the aorta). ANTICOAGULANTS are used to prevent blood clotting.
References in periodicals archive ?
MI), a global medical device company and a leader in the treatment of cardiovascular diseases, announced today the delivery of the 1000th S5 Heart-Lung Machine to the Mount Sinai Medical Center, one of the world's leading centers for cardiovascular medicine, based in New York, USA.
A Heart-Lung Machine is a sophisticated piece of medical equipment that helps maintain a patient's life when undergoing an open-heart cardiac surgery procedure.
Sold worldwide in more than 50 countries, the S5 Heart-Lung Machine sets new standards in HLM technology through the culmination of more than 30 years of experience in extracorporeal perfusion system design and manufacturing.
and rest of the world between end 2005 and 2006, the Stockert S5 is the fifth-generation of heart-lung machines and the successor to Sorin Group's SIII perfusion system.
With the launch of the new S5 in Japan, I am confident the Sorin Group will gain market leadership in heart-lung machines in this key country and further consolidate its leading worldwide market share", said Michel Darnaud, President, Cardiopulmonary Business Unit and Intercontinental, Sorin Group.
Sorin Group collaborated with perfusionists across the globe to ensure that our newest heart-lung machine would include the most advanced features and technology," added Hahn, "and we are also excited to launch our triple channel heater cooler system in the U.
The MVST procedure eliminates the need for the median sternotomy incision and the heart-lung machine (cardiopulmonary bypass).
But heart-lung machines place patients at risk of potentially fatal complications such as stroke, abnormal rhythms, lung problems and fluid retention.
Studies find that while more than 95 percent of the cases are successful, there remain serious side effects and occasional deaths, many resulting not from the surgery itself, but from the heart-lung machine.
The technology -- consisting of a hand-held surgeon's "antenna" about the diameter of a lead of pencil -- allows doctors to treat atrial fibrillation without hooking up patients to heart-lung machines.