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Topic: Cardiac pump

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	Coronary Angioplasty - Percutaneous Transluminal Coronary Angioplasty (PTCA)- The Doctors Lounge(TM)
		Cardiac pumps are most often used in heart surgery, so that a patient's heart can be disconnected from the body for longer than the twenty minutes or so it takes a prepared patient to die.
		Cardiac pumps are also sometimes used to keep babies with birth defects alive, or to aerate bodies with transplantable organs.
		Chronic use of cardiac pumps is contraindicated because the pressure profile of most practical pumps is believed to cause circulatory damage to the brain, especially in extended use.
	www.doctorslounge.com /cardiology/procedures/cardiac_pump.htm (0 words)

	Cardiac pump - Biocrawler (Site not responding. Last check: )
		Cardiac pumps are most often used in heart surgery, so that a patient's heart can be disconnected from the body for longer than the twenty minutes or so it takes a prepared patient to die.
		Cardiac pumps are also sometimes used to keep babies with birth defects alive, or to aerate bodies with transplantable organs.
		Chronic use of cardiac pumps is contraindicated because the pressure profile of most practical pumps is believed to cause circulatory damage to the brain, especially in extended use.
	www.biocrawler.com /encyclopedia/Heart-lung_machine (334 words)

	Researchers Discover New Function Of Cardiac Sodium Pump
		During embryonic heart morphogenesis, the pump generates a change in the ion concentration within and outside the cells (ion gradient).
		The sodium pump is also involved in cell junction maintenance, thus ensuring that the heart cells stay connected with one another.
		If this hypothesis is confirmed, this means that the sodium pump plays a central role in the development of different types of epithelial cells not only in the heart but throughout the entire organism.
	www.sciencedaily.com /releases/2007/01/070115100535.htm (917 words)

	New technique to relieve pain after heart surgery
		Cardiac patients at the Northwestern Cardiovascular Institute are among the first in the country to benefit from a pump dispense system used to treat pain specifically after heart surgery.
		The pain relief pump helps patients to avoid the incapacitating side effects of narcotics that can delay surgical recovery, which means less pain and narcotics use, shorter hospital stays, and a quicker recovery for patients.
		While it is a new advancement to use the pain relief pump to treat pain after cardiac surgery, Northwestern Memorial also uses pain relief pumps to treat postoperative pain in a handful of other surgeries, including Bariatric surgery, plastic surgery and some spine surgeries.
	www.eurekalert.org /pub_releases/2004-06/nmh-ntt060704.php (929 words)

	Physiology And Pathophysiology text book/Cardiac action potentials and disorders - Pharmpedia
		The sinus node is the primary determinator of the cardiac rhythm, because its cells have the highest spontaneous frequency.
		The excitability of cardiac fibres, striated muscle cells and neurons is reduced by a reduction of the cellular Ca2+-gradient (hypocalcaemia), a rise in the Na+-gradient across the cell membrane, or the administration of Ca2+-blockers that prevent Ca2+ from entering the cell.
		Cardiac arrest is cessation of all spontaneous cardiac rhythmicity.
	www.pharmpedia.com /Physiology_And_Pathophysiology_text_book/Cardiac_action_potentials_and_disorders (6116 words)

	Cardiac pump - ArticleWorld (Site not responding. Last check: )
		A cardiac pump (more commonly referred to as cardiac bypass pump or heart-lung machine) is a machine that temporarily takes the role of the heart and the lungs during medical procedures.
		Another common use for cardiac pumps is to keep alive babies who have severe birth defects, or to continuously aerate bodies that contain organs which will be used in transplants.
		Cardiac valve repair or replacement, for the aortic valve, the mitral valve, tricuspid valve and the pulmonic valve.
	www.articleworld.org /index.php/Cardiac_pump (185 words)

	Cardiac Pump
		Pi inhibits the SR Ca2+ pump and stimulates pump-mediated Ca2+ leak in rabbit ca...
		Cardiac surgeons prove decreased mortality with off-pump coronary artery bypass...
		Increasing cardiac output and decreasing oxygenation sequence in pump twins of a...
	www.scienceoxygen.com /medical/84.html (418 words)

	Acute Orthostatic Intolerance and Syncope
		It may be due to medication, cardiac disease, most commonly arrhythmic disease, or severe impairment of cardiac output by mechanical failure or obstruction.
		Cardiac syncope is often quite serious and should be regarded as life-threatening.
		Cardiac syncope may first manifest during exercise, which is the best and most physiologic stressor of the myocardial circulation and overall cardiac function.
	www.nymc.edu /fhp/centers/syncope/acute_orthostatic_intolerance_and_syncope.htm (747 words)

	UC Davis Math: Colloquia and Seminars
		Pumping blood in one direction is the main function of the heart, and the heart is equipped with valves that ensure unidirectional flow.
		In the thoracic pump model, it has been reported that the heart is viewed as a passive conduit for blood flow and a mitral valve remains open throughout the cardiac during CPR.
		However, in the cardiac pump model, the heart acts as a pump and its valves function normally during the entire cycle of CPR.
	www.math.ucdavis.edu /research/seminars/?type=7&when=past&talkid=362 (253 words)

	Heart Failure
		It is predominantly a venodilator, and to a lesser extent, an arterial vasodilator that reduces cardiac preload and alleviates pulmonary congestion.
		Cardiac resynchronization therapy can be combined with an ICD as a single device if a patient meets criteria for both devices, as often is the case.
		Following cardiac transplantation, patients are subjected to lifelong immunosuppression to prevent rejection that renders them susceptible to various opportunistic infections and malignancies.
	www.clevelandclinicmeded.com /diseasemanagement/cardiology/heartfailure/heartfailure.htm (4757 words)

	PAC Q & A 3
		A patient in septic shock has a thermodilution cardiac output (measured as the mean of three injections) of 9.5 l/min, a mean arterial pressure of 65 mmHg, a right atrial pressure of 5 mmHg and a pulmonary capillary wedge pressure of 12 mmHg.
		Cardiac output injections should be timed to end-expiration, like pressure measurements, for the greatest accuracy.
		The calculation of cardiac output is based on the integrated area under the thermal decay curve and the quantum of indicator injected.
	www.thoracic.org /sections/clinical-information/critical-care/hemodynamic-monitoring/pulmonary-artery-catheter-primer/q-and-a/qa-3.html (914 words)

	eMedicine - Congestive Heart Failure : Article by Vibhuti N Singh, MD, MPH, FACC, FSCAI
		The heart's inability to pump a sufficient amount of blood to meet the needs of the body tissues may be due to insufficient or defective cardiac filling and/or impaired contraction and emptying.
		Reduced cardiac output is associated with a lowered glomerular filtration rate and an increased elaboration of renin, which, through the activation of angiotensin, results in the release of aldosterone.
		Implantable cardiac defibrillators are now the treatment of choice in patients with LV dysfunction who, have survived sudden cardiac death, who have symptomatic sustained ventricular tachycardia, or who have asymptomatic and nonsustained but inducible ventricular tachycardia.
	www.emedicine.com /radio/topic189.htm (7165 words)

	Cardiac Output
		Cardiac Output is the volume of blood that the heart is able to pump out per unit time, represented in Liters per minute.
		The cardiac output represents the volume of blood that is delivered to the body, and is therefore an important factor in the determination of the effectiveness of the heart to deliver blood to the rest of the body, (i.e., determining heart failure, inadequate circulation, etc).
		Cardiac Output is usually measured using the Fick Principle, which relates the cardiac output of the patient to the oxygen consumption, or by thermodilution, in which cold saline is injected into the right atrium and changes in the temperature in the pulmonary artery are recorded.
	bme.usc.edu /bme403/Section_3/cardiac_output.html (778 words)

	Electrophysiology of the Sodium-Potassium-ATPase in Cardiac Cells -- Glitsch 81 (4): 1791 -- Physiological Reviews (Site not responding. Last check: )
		that cytoplasmic Na binding to the cardiac Na pump is voltage insensitive (131).
		accumulating that the apparent affinity of the cardiac Na pump to intracellular Na is voltage dependent and increases with depolarization.
		Pump currents were obtained by subtracting currents recorded in the presence of 2 mM strophanthidin from the average of currents recorded just before, and just after, the brief exposure to strophanthindin.
	physrev.physiology.org /cgi/content/full/81/4/1791 (5037 words)

	BBC NEWS \| Health \| 'Easy fit' pump for heart disease
		Traditional cardiac pumps have to be inserted with open heart surgery which can be risky in heart disease patients.
		The technique to insert the new pump, which is only 4mm wide and 10cm long, is similar to the way in which stents are placed in blocked arteries.
		The pump is mounted on a stent and then fed on a deflated balloon through an incision in the groin into the upper aorta, a large artery that carries blood from the heart.
	news.bbc.co.uk /2/hi/health/5029206.stm (553 words)

	Datascope - Cardiac Assist - Balloon Pump Therapy
		Intra-aortic balloon pump therapy helps restore the balance between the supply of oxygen-rich blood the heart receives from the coronary arteries, and the amount of oxygen the heart needs to pump.
		The second component of balloon pump therapy is the pump itself.
		The pump continually inflates and deflates the balloon within your aorta in time with your heart beat.
	www.datascope.com /ca/balloonpump_therapy.html (758 words)

	Cardiology in Critical Care-IABP
		We are not attempting to mimic the pump, therefore, the timing of the balloon movement to the cardiac cycle is not important.
		Counterpulsation achieved by deflation of the IABP during the sestolic phase of the Cardiac Cycle, and inflation during the diastolic phase of the Cycle.
		In the event of sudden pump failure at night, it may be much quicker to have security assess a new pump.
	rnbob.tripod.com /iabp.htm (6285 words)

	Cardiac pump (Site not responding. Last check: )
		cardiac cardiac resuscitation cardiac murmur cardiac disease cardiac catheterization cardiac arrest cardiac flow meter arabic cardiac society advanced cardiac life support advance cardiac life support penis pump injection pump insulin pump
		It generally has two parts, the pump and the aerator.
		See also life support, medicine, advanced cardiac life support, artificial heart........
	www.purpleuniverse.com /true_associate-Cardiac_pump.html (294 words)

	Cardiac Services - Yale-New Haven Hospital Cardiac Services
		Find information about particular cardiac diseases and diagnoses, and see what diagnostic tests and treatment options are available for heart diseases and for heart attacks.
		A cardiac rehabilitation program can help speed your recovery and reduce the risk and severity of heart disease in the future.
		Individual stories of illness, rehabilitation and recovery drawn from the life experiences of cardiac patients and their doctors and nurses at Yale-New Haven.
	www.ynhh.org /cardiac (394 words)

	Cardiac pump function and mitochondrial respiration at early doxorubicin treatment and withdrawal
		The pump function of the isolated heart and mitochondrial in situ respiration were estimated.
		The cardiac distensibility curve was slightly shifted to the right, to higher distensibility.
		The maximal cardiac work in the doxorubicin-treated group at increased resistance was elevated by 33%.
	www.pulsus.com /europe/04_03/kape_ed.htm (255 words)

	Off-Pump Heart Bypass Surgery
		Most people are surprised to learn that in "traditional" bypass surgery, surgeons use the assistance of the heart-lung machine along with medications to stop the heart so the bypass can be performed on a motionless field.
		The heart-lung machine is referred to as a "pump" because it continues to mechanically pump oxygen and nutrients to the body during surgery.
		In recent years, cardiac surgeons have explored less invasive alternatives to traditional bypass procedures.
	www.heartsurgery-usa.com /What_s_New/Off_Pump_Heart_ByPass/body_off_pump_heart_bypass.html (0 words)

	Cardiac pump can extend life in end-stage heart failure
		Heart pumps can significantly extend the lives of end-stage heart failure patients who are not candidates for heart transplants, researchers reported at the American Heart Association's Scientific Sessions 2005.
		Left ventricular assist devices (LVADs), or mechanical cardiac pumps, are among the newest treatment options for congestive heart failure, which occurs when the heart can no longer pump enough blood to the body's organs.
		A tube connects the pump to an external controller and power supply that are worn outside the body.
	www.medicalnewstoday.com /medicalnews.php?newsid=33564 (544 words)

	Twin Reversed Arterial Perfusion Sequence (TRAP) : Fetal Diagnosis and Treatment - Children's Hospital of Philadelphia
		Due to the abnormal circulation and the increased demand that the abnormal twin places on the heart of the pump twin, cardiac failure is of primary concern in TRAP sequence.
		Increased cardiac demands on the pump twin results in increased cardiac output and blood flow to the kidneys, leading to the overproduction of fetal urine (the primary source of amniotic fluid) and eventual polyhydramnios (excess amniotic fluid), which leads to preterm labor and premature delivery.
		In this small series, pump twin survival in the bipolar group was 43 percent compared to 92 percent in the RFA group.
	www.chop.edu /consumer/jsp/division/generic.jsp?id=81174 (3195 words)

	SAFT : The Battery Company
		The range of applications extends from cardiac support prior to transplantation (bridge to transplant) to heart support leading to recovery (bridge to recovery), which subsequently renders a transplant unnecessary.
		Blood coming from the heart flows into an axial pump and then on to what are known as an impeller and a stationary diffuser wheel.
		It pumps blood in pulses, according to the rhythm of the patient's heart, thereby assisting the diseased heart in circulating the patient's blood.
	www.saftbatteries.com /050-MS_Medical/20-20-80_vascular_cardiac_pump.asp (325 words)

	Journal of Cardiothoracic Surgery \| Full text \| Mechanisms of pulmonary dysfunction after on-pump and off-pump cardiac ...
		Cardiac surgery involving cardiopulmonary bypass (CPB) can be complicated by pulmonary dysfunction after surgery, sometimes necessitating prolonged mechanical ventilation, the causes of which remain largely unclear [1,2].
		The difference in cardiac output and oxygen delivery is unlikely explained by a difference in body temperature, when, at the time of study, rewarming of patients undergoing hypothermic CPB was not yet completed.
		Together with similar filling pressures, the data suggest a diminished cardiac function and tissue oxygenation after on-pump as compared to off-pump surgery, as observed before, and possibly related to greater myocardial damage during hypothermic cardioplegia [17,19,23,24,26,27,31].
	www.cardiothoracicsurgery.org /content/2/1/11 (4268 words)

	EM2 SHOCK
		Shock is classified into four categories by etiology: (1) hypovolemic (due to inadequate circulating volume), (2) cardiogenic (due to inadequate cardiac pump function), (3) distributive (maldistribution of blood flow), and (4) obstructive (extracardiac obstruction to blood flow).
		Cardiac output typically falls during hemorrhage due to a decrease in atrial filling or preload despite increases in myocardial rate and contractility.
		Early blood therapy is particularly important in the elderly and in those with significant respiratory and cardiac disease, as their ability to tolerate a decrease in oxygen-carrying capacity is significantly reduced.
	faculty.washington.edu /alexbert/MEDEX/Spring/EM2SHOCK.htm (6856 words)

	New Function of Cardiac Sodium Pump
		The sodium-potassium pump conducts this transport activity by pumping potassium ions into the cell interior and allowing sodium ions to flow out of the cell.
		The sodium pump is also involved in cell junction maintenance, thus ensuring that the heart cells stay connected with one another.
		If this hypothesis is confirmed, this means that the sodium pump plays a central role in the development of different types of epithelial cells not only in the heart but throughout the entire organism.
	www.chemlin.net /news/2007/jan2007/sodium-pump.htm (574 words)

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