Hypotension: Any blood pressure that is below the normal expected for an individual in a given environment. Hypotension is the opposite of hypertension (abnormally high blood pressure).
Hypotension is a relative term because the blood pressure normally varies greatly with activity, age, medications, and underlying medical conditions.
Low blood pressure can result from conditions of the nervous system, conditions that do not begin in the nervous system, and drugs.
Neurologic conditions that can lead to low blood pressure include changing position from lying to more vertical (postural hypotension), stroke, shock, lightheadedness after urinating or defecating, Parkinson's disease, neuropathy and simply fright.
Nonneurologic conditions that can cause low blood pressure include bleeding, infections, dehydration, heart disease, adrenal insufficiency, pregnancy, prolonged bed rest, poisoning, toxic shock syndrome, and blood transfusion reactions.
Hypotensive drugs include blood pressure drugs, diuretics (water pills), heart medications (especially calcium antagonists- nifedipine / Procardia, beta blockers-propranolol / Inderal and others), depression medications (such as amitriptyline / Elavil), and alcohol.
The word hypotension is a hybrid of the Greek "hypo" meaning "under" and the Latin "tensio" meaning "to stretch." In French, "la tension" is "the blood pressure."
Abnormally low blood pressure, commonly considered to be levels below 100 diastolic and 40 systolic.
Low blood pressure (hypotension) â€” Comprehensive overview covers symptoms, causes and treatment of this condition.
Low blood pressure, or hypotension, occurs when blood pressure during and after each heartbeat is much lower than usual. This means the heart, brain, and ...
Low blood pressure; Blood pressure - low; Postprandial hypotension; Orthostatic hypotension; Neurally mediated hypotension; NMH
In physiology and medicine, hypotension refers to a condition of abnormally low blood pressure, in contrast to hypertension, which is high blood pressure.