Term
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Definition
| Relating to nerve fibers that release norepinephrine or epinephrine at synapses. |
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Term
| adrenergic neuron-blocking agents |
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Definition
| Substances that inhibit transmission of sympathetic nerve stimuli regardless of whether alpha- or beta-adrenergic receptors are involved. |
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Term
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Definition
| the forces that impede the flow of blood out of the heart. The heart contracts against a resistance primarily composed of the pressure in the peripheral vasculature, the compliance of the aorta, and the mass and viscosity of blood. |
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Term
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Definition
| Severe pain around the heart caused by a relative deficiency of oxygen supply to the heart muscle. |
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Term
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Definition
| Alteration of a blood vessel, either surgically or by dilating the vessel using a balloon inside the lumen. |
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Term
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Definition
| A drug or physical force that acts to control or prevent cardiac arrhythmias |
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Term
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Definition
| Irregularity or loss of rhythm, esp. of the heartbeat. |
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Term
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Definition
A hemodynamic monitoring system consisting of a catheter in an artery connected to pressure tubing, a transducer, and an electronic monitor. |
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Term
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Definition
| Cardiac standstill; absence of contractions of the heart. |
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Term
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Definition
| An experimental technique for removing atheromatous plaques from arteries. |
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Term
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Definition
| The most common form of arteriosclerosis, marked by cholesterol-lipid-calcium deposits in arterial linings. |
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Term
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Definition
| Irregular and rapid discharges from multiple ectopic atrial foci that cause randomized quivering of the atria. |
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Term
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Definition
| A cardiac arrhythmia originating in the atrial muscle cells; marked by rapid (approx. 300 times per minute) regular atrial activity and usually regular ventricular response of varying rates. |
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Term
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Definition
| Rapid heart rate, usually less than 200 beats per minute |
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Term
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Definition
| A condition in which the depolarization impulse is delayed or blocked at the atrioventricular (A-V) node or a more distal site, as in the A-V bundle or bundle branches. |
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Term
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Definition
| The unique property of cardiac muscle tissue to contract without nervous stimulation. |
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Term
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Definition
| A period of silence that sometimes occurs in the determination of blood pressure by auscultation. |
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Term
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Definition
| A slow heartbeat characterized by a pulse rate below 60 beats per minute |
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Term
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Definition
| Percutaneous intravascular insertion of a catheter into any chamber of the heart or great vessels for diagnosis, assessment of abnormalities, interventional treatment, and evaluation of the effects of pathology on the heart and great vessels. |
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Term
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Definition
| Any of a group of drugs that slow the influx of calcium ions into muscle cells, resulting in decreased arterial resistance and decreased myocardial oxygen demand |
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Term
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Definition
| The amount of blood discharged from the left or right ventricle per minute. |
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Term
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Definition
| A pathological condition resulting from the accumulation of excess fluid in the pericardium; it may result from pericarditis or injuries to the heart or great blood vessels, with accumulation of blood. |
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Term
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Definition
| Shock resulting from failure to maintain the blood supply to the circulatory system and tissues because of inadequate cardiac output. |
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Term
| cardiopulmonary resuscitation |
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Definition
| The process of ventilating and circulating blood for a patient in cardiopulmonary arrest, usually by combining mouth-to-mouth ventilation with external chest compressions. |
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Term
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Definition
| Synchronized electric shock used to terminate cardiac arrhythmias. |
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Term
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Definition
| Lameness. Limping, abnormal gait, or hobbling resulting from partial loss of function in a leg. |
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Term
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Definition
| Compression of the walls of a vessel |
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Term
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Definition
| Surgical incision of any commissure; used in treating mitral stenosis to increase the size of the mitral orifice. |
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Term
| coronary artery bypass surgery |
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Definition
Surgical establishment of a shunt that permits blood to travel from the aorta to a branch of the coronary artery at a point past an obstruction. |
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Term
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Definition
| A murmur occurring during relaxation of the heart. |
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Term
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Definition
| Aneurysm in which the blood makes its way between the layers of a blood vessel wall, separating them; a result of necrosis of the medial portion of the arterial wall. |
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Term
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Definition
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Term
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Definition
| A noninvasive diagnostic method that uses ultrasound to visualize internal cardiac structures. |
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Term
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Definition
| A record of the electrical activity of the heart. |
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Term
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Definition
| Aneurysm in which all the walls of a blood vessel dilate more or less equally, creating a tubular swelling. |
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Term
| intermittent claudication |
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Definition
| A severe pain in the calf muscles that occurs during walking but subsides with rest. |
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Term
| intra-aortic balloon counterpulsation |
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Definition
| The use of a balloon attached to a catheter inserted through the femoral artery into the descending thoracic aorta to produce alternating inflation and deflation during diastole and systole, respectively |
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Term
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Definition
| A local and temporary deficiency of blood supply due to obstruction of the circulation to a part. |
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Term
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Definition
| Regular heart rhythm in which strong beats alternate with weak ones. |
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Term
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Definition
| Aneurysm in which there is weakness on one side of the vessel; usually due to trauma. It is attached to the artery by a narrow neck. |
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Term
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Definition
| A slow sinus rhythm with an atrial rate below 60 beats per minute in an adult, 70 beats per minute in a child |
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Term
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Definition
| A heart rate of 90 beats per min or more. |
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Term
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Definition
| A soft, flexible catheter that is inserted into the pulmonary artery of patients in shock or acute pulmonary edema to determine intracardiac pressures, oxygen saturation, and other hemodynamic parameters. |
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Term
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Definition
| An abnormal rapidity of heart action, usually defined as a heart rate greater than 100 beats per minute in adults |
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Term
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Definition
An anomaly of the heart consisting of: pulmonary stenosis interventricular septal defect dextroposed aorta that receives blood from both ventricles, and hypertrophy of the right ventricle. |
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