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Chapter 48 Terms
Med Surg I
24
Nursing
Undergraduate 2
11/06/2010

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Term
Aneurysm
Definition
Localized dilation of the wall of the blood vessel. Usually caused by atherosclerosis and hypertension. It is less commonly caused by congenital weakness in vessel wall.
Term
Angina Pectoris
Definition
Paroxysmal pain and choking feeling caused by anoxia of the myocardium.
Term
Arteriosclerosis
Definition
Common arterial disorder characterized by thickening, loss of elasticity and calcification of arterial walls, resulting in decreased blood supply.
Term
Atherosclerosis
Definition
Common arterial disorder characterized by yellowish plaques of cholesterol, lipids and cellular debris in the inner layer of walls of large and medium sized arteries.
Term
Bradycardia
Definition
Slow rhythm characterized by a pulse rate of fewer than 60 beats per minute.
Term
B-Type natriurectic peptide (BNP)
Definition
A neurohormone secreted by the heart in response to ventricular expansion.
Term
Cardioversion
Definition
Restoration of the hearts normal sinus rhythm by delivery of a synchronized electric shock through two metal paddles placed on the patient’s chest.
Term
Coronary artery disease (CAD)
Definition
Variety of conditions that obstruct blood flow in the coronary arteries.
Term
Defibrillation
Definition
The termination of a ventricular fibrillation by delivering a direct electrical countershock to the precordium
Term
Dysrhythmia
Definition
Any disturbance or abnormality in normal rhythmic pattern, specifically, irregularity in the normal rhythm of the heart. Also called arrhythmia.
Term
Embolus
Definition
A foreign object, quantity of air or gas, biit of tissue or tumor, or a piece of thrombus that circulates in the bloodstream until it becomes lodged in a vessel.
Term
Endartectomy
Definition
Surgical removal of the intimal lining of an artery.
Term
Heart failure (HF)
Definition
Syndrome characterized by circulatory congestion due to the hearst inability to act as an effective Pump; It should be viewed as a neurohormonal problem in which pathology progresses as a result of chronic release in the body of substances such as catecholamines (ephinephrine and nonepinephrine).
Term
Hypoxemia
Definition
An abnormal deficiency of Oxygen in the arterial blood.
Term
Intermittent claudication
Definition
A weakness of the legs accompanied by cramp like pains in the calves caused by poor arterial circulation of the blood to the leg muscles.
Term
Ischemia
Definition
Decreased blood supply to a body organ or part, often marked by pain and organ dysfunction.
Term
Myocardial infarction
Definition
An occlusion of a major coronary artery or one of its branches: it is caused by artherosclerosis or an embolus resulting in necrosis of a portion of cardiac muscle.
Term
Occlusion
Definition
An obstruction or closing off of a canal, vessel or passage of the body.
Term
Orthopnea
Definition
An abnormal condition in which a person must sit or stand to breathe deeply or comfortably.
Term
Peripheral
Definition
Pertaining to the outside surface or surrounding area of an organ, other structure or fluid of vision.
Term
Pleural effusion
Definition
An abnormal accumulation of fluid in the thoracic cavity between the visceral and parietal pleurae.
Term
Polycythemia
Definition
Abnormal increase in the number of red blood cells in the blood.
Term
Pulmonary Edema
Definition
Accumulation of extravascular fluid in lung tissue and alveoli; caused most commonly by left-side heart failure.
Term
Tachycardia
Definition
Tachycardia An abnormal condition in which the myocardium contracts regularly but at a rate greater than 100 beats per minute.
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