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Side Effect
Side Effect
An unintended effect of a drug on tissues or organs other than the drug benefits.
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Saphenous Vein
Vein located in the leg(s) and used for coronary artery bypass surgery. It is surgically removed from the leg and sewn from the aorta to the coronary artery beyond the site of blockage.
Secondary Pulmonary Hypertension
Pulmonary hypertension is high blood pressure of the pulmonary arteries. Secondary hypertension is a disease process which reduces the blood supply to the lungs such as a blood clot (pulmonary emboli).
Sensitization
Potential recipients are "sensitized" if there are antibodies in their blood, usually because of pregnancy, blood transfusions or previous rejection of an organ transplant. Sensitization is measured by PRA. Highly sensitized patients are more likely to reject an organ transplant than unsensitized patients.
Septal Defect
A hole or "defect" is in the heart muscle forming a wall between the left and right side of the heart. Can be an atrial septal defect (ASD) or ventricular septal defect (VSD).
Sestamibi Exercise Stress Test (Sestamibi stress test, stress perfusion scan, stress Sestamibi)
A diagnostic study, which uses a small amount of radioactive tracer, injected into the body, and a special camera, which detects the radiation, released by the substance to produce a computer image of the heart. Combined with exercise, the study can help determine if there is adequate blood flow to the heart at rest, as compared with activity.
Side Effect
Sodium
A mineral found in most of the foods we eat. The largest source of dietary sodium comes from sodium chloride or table salt. Intake of sodium tends to increase the retention of water.
Status
Indicated degree of medical urgency for patients awaiting transplants.
Sternum (breastbone)
Bone in chest separated during open heart surgery.
Stress Test
See exercise stress test
Stroke (also called cerebral vascular accident or CVA)
Impaired artery blood flow to the brain. During a stroke, brain cells in the affected area are starved for oxygen and subsequently die.
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