DefinitionOrthostatic hypotension is a condition of abnormal blood pressure regulation upon standing. The blood pressure quickly decreases, more than 20/10 mm Hg, when rising from a lying down or sitting position to a standing position.
|Measuring of Blood Pressure|
|Copyright © Nucleus Medical Media, Inc.|
CausesAs you stand, blood falls toward your lower body in response to gravity. To help keep blood in the upper body:
- Blood vessels in the lower body will tighten to help push blood back up.
- The muscles in the lower body contract, or squeeze, to help push blood to upper body.
- The heart will contract a little harder to pump blood up toward the brain.
- Excessive use of loop diuretic medications
- Vasodilator medications, such as nitrate preparations, calcium channel blockers, or angiotensin-converting enzyme (ACE) inhibitors
- Prolonged bedrest
- Addisons disease with inadequate salt intake
- Diseases or conditions that impair the nervous system or nerves that control the widening or shrinking of blood vessels
- Decreased ability of the heart to contract or reaction of blood vessels
- Medications that can affect the nervous system or cardiovascular system
- Alcohol—can slow the reaction of the nervous system
More from Beliefnet
Improving parent-adolescent sexual communication has been noted as one factor that could help to encourage adolescents to practice safer sex behavior. This study found that sexual communication with parents plays a small protective role in safer sex behavior among adolescents.
Celiac Disease May Increase the Risk of Bone Fractures
Music May Improve Sleep Quality in Adults with Insomnia
CPAP May Help Older Adults with Obstructive Sleep Apnea