Orthostatic hypotension: Difference between revisions
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In [[medicine]], '''orthostatic hypotension''' is "a significant drop in blood pressure after assuming a standing position. Orthostatic hypotension is a finding, and defined as a 20-mm hg decrease in systolic pressure or a 10-mm hg decrease in diastolic pressure 3 minutes after the person has risen from supine to standing. Symptoms generally include [[dizziness]], blurred vision, and [[syncope]]."<ref>{{MeSH}}</ref> | In [[medicine]], '''orthostatic hypotension''' is "a significant drop in blood pressure after assuming a standing position. Orthostatic hypotension is a finding, and defined as a 20-mm hg decrease in systolic pressure or a 10-mm hg decrease in diastolic pressure 3 minutes after the person has risen from supine to standing. Symptoms generally include [[dizziness]], blurred vision, and [[syncope]]."<ref>{{MeSH}}</ref> | ||
Orthostatic hypotension is an [[orthostatic intolerance]] along with [[postural orthostatic tachycardia syndrome]] (POTS) and [[vasovagal syncope]]. | Orthostatic hypotension is an [[orthostatic intolerance]] along with [[postural orthostatic tachycardia syndrome]] (POTS)<ref name="pmid18625897">{{cite journal |author=Grubb BP, Karabin B |title=Cardiology patient page. Postural tachycardia syndrome: perspectives for patients |journal=Circulation |volume=118 |issue=3 |pages=e61–2 |year=2008 |month=July |pmid=18625897 |doi=10.1161/CIRCULATIONAHA.107.761650 |url=http://circ.ahajournals.org/cgi/pmidlookup?view=long&pmid=18625897 |issn=}}</ref><ref name="pmid19207771">{{cite journal |author=Low PA, Sandroni P, Joyner M, Shen WK |title=Postural Tachycardia Syndrome (POTS) |journal=J. Cardiovasc. Electrophysiol. |volume= |issue= |pages= |year=2009 |month=January |pmid=19207771 |doi=10.1111/j.1540-8167.2008.01407.x |url=http://dx.doi.org/10.1111/j.1540-8167.2008.01407.x |issn=}}</ref> and [[vasovagal syncope]]. | ||
==Causes== | ==Causes== | ||
Revision as of 23:07, 24 February 2009
In medicine, orthostatic hypotension is "a significant drop in blood pressure after assuming a standing position. Orthostatic hypotension is a finding, and defined as a 20-mm hg decrease in systolic pressure or a 10-mm hg decrease in diastolic pressure 3 minutes after the person has risen from supine to standing. Symptoms generally include dizziness, blurred vision, and syncope."[1]
Orthostatic hypotension is an orthostatic intolerance along with postural orthostatic tachycardia syndrome (POTS)[2][3] and vasovagal syncope.
Causes
Endarterectomy of the internal carotid artery may be a cause.[4][5]
However, orthostasis may be improved by endarterectomy[6] if there is "vasodepressor-type carotid sinus syndrome caused by compression of the carotid baroreceptors by atherosclerotic plaques."[7]
References
- ↑ Anonymous (2024), Orthostatic hypotension (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Grubb BP, Karabin B (July 2008). "Cardiology patient page. Postural tachycardia syndrome: perspectives for patients". Circulation 118 (3): e61–2. DOI:10.1161/CIRCULATIONAHA.107.761650. PMID 18625897. Research Blogging.
- ↑ Low PA, Sandroni P, Joyner M, Shen WK (January 2009). "Postural Tachycardia Syndrome (POTS)". J. Cardiovasc. Electrophysiol.. DOI:10.1111/j.1540-8167.2008.01407.x. PMID 19207771. Research Blogging.
- ↑ Nouraei SA, Al-Rawi PG, Sigaudo-Roussel D, Giussani DA, Gaunt ME (April 2005). "Carotid endarterectomy impairs blood pressure homeostasis by reducing the physiologic baroreflex reserve". J. Vasc. Surg. 41 (4): 631–7. DOI:10.1016/j.jvs.2005.01.009. PMID 15874927. Research Blogging.
- ↑ Azuma Y, Imai K, Oda K, Niwa F, Makino M, Oshima F (October 2007). "[Case of baroreflex failure after bilateral revascularization of the cervical carotid artery]" (in Japanese). Rinsho Shinkeigaku 47 (10): 657–61. PMID 18095499. [e]
- ↑ Hirschl M, Kundi M, Blazek G (July 1996). "Five-year follow-up of patients after thromboendarterectomy of the internal carotid artery: Relevance of baroreceptor sensitivity". Stroke 27 (7): 1167–72. PMID 8685922. [e]
- ↑ Akiyama Y, Hashimoto N, Morimoto M (February 1999). "Orthostatic hypotension improved after bilateral carotid endarterectomy--case report". Neurol. Med. Chir. (Tokyo) 39 (2): 153–6. PMID 10193149. [e]