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Orthostatic hypotension, also known as postural hypotension, [2] is a medical condition wherein a person's blood pressure drops when they are standing up (orthostasis) or sitting down. Primary orthostatic hypotension is also often referred to as neurogenic orthostatic hypotension. [ 3 ]
Orthostatic syncope refers to syncope resulting from a postural decrease in blood pressure, termed orthostatic hypotension. [1]Orthostatic hypotension occurs when there is a persistent reduction in blood pressure of at least 20mmHg systolic or 10mmHg diastolic within three minutes of standing or being upright to 60 degrees on the head-up tilt table.
Orthostatic vital signs are also taken after surgery. [7] A patient is considered to have orthostatic hypotension when the systolic blood pressure falls by more than 20 mm Hg, the diastolic blood pressure falls by more than 10 mm Hg, or the pulse rises by more than 20 beats per minute within 3 minutes of standing [5] [7]
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Although the posture is not dangerous in itself, there are pathologies associated with prolonged intervals of unrelieved standing. One short-term condition is orthostatic hypotension, and long-term conditions are sore feet, stiff legs, and low back pain. Some variations of standing are:
Before taking the test, the patient may be instructed to fast for a period before the test will take place and to stop taking any medications. On the day of the tilt table test, an intravenous line may be placed in case the patient needs to be given medications quickly; however, this may influence the results of the test and may only be indicated in particular circumstances.
Autonomic dysreflexia differs from autonomic instability, the various modest cardiac and neurological changes that accompany a spinal cord injury, including bradycardia, orthostatic hypotension, and ambient temperature intolerance. Because of this, elevated blood pressures in patients with baseline hypotension may not be recognized unless ...
Standing, also referred to as orthostasis, is a position in which the body is held in an upright (orthostatic) position and supported only by the feet. Although seemingly static, the body rocks slightly back and forth from the ankle in the sagittal plane , which bisects the body into right and left sides.