Aortic dissection resident survival guide: Difference between revisions
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==Definition== | ==Definition== | ||
A tear in the layers of the aorta especially in the intima leading to bleeding and separation of the layers of the aorta from within which creates a false lumen. | A tear in the layers of the aorta especially in the intima leading to bleeding and separation of the layers of the aorta from within which creates a false lumen. | ||
Aortic dissction can be further defined as: | |||
#Acute dissection- Dissection occurring within 2 weeks of onset of pain | |||
#Subacute dissection-Dissection occurring witin 2-6 weeks of onset of pain | |||
#Chronic dissection- Dissection occurring within 6 weeks of pain. | |||
==Classification== | ==Classification== | ||
Line 22: | Line 26: | ||
#Distal- Descending aortic involvement distal to left subclavian artery. | #Distal- Descending aortic involvement distal to left subclavian artery. | ||
==Causes== | ==Causes== |
Revision as of 17:19, 7 March 2014
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Chetan Lokhande, M.B.B.S [2]
Definition
A tear in the layers of the aorta especially in the intima leading to bleeding and separation of the layers of the aorta from within which creates a false lumen. Aortic dissction can be further defined as:
- Acute dissection- Dissection occurring within 2 weeks of onset of pain
- Subacute dissection-Dissection occurring witin 2-6 weeks of onset of pain
- Chronic dissection- Dissection occurring within 6 weeks of pain.
Classification
Aortic dissection can be classified into four types .DeBakey and Daily (Stanford) systems are the commonly used systems used to classify aortic dissection.[1][2][3][4]
- Stanford system classifies dissection into the following two types based on whether ascending aorta is involved or not.
- Ascending aortic dissection or type A
- All other dissections or type B
- DeBakey system classifies dissection according to location of the tear.
- Type I- Starts at ascending aorta and extension upto the aortic arch.
- Type II- Starts and is limited till the ascending aorta
- Type III- Starts in the descending aorta and progresses proximally or distally.
- Type IIIA- Restricted till the descending thoracic aorta.
- Type IIIB- Dissection extending below the diaphragm.
- The third type of classification divides aortic dissection according to the proximity
- Proximal- Ascending aortic involvement
- Distal- Descending aortic involvement distal to left subclavian artery.
Causes
Life Threatening Causes
Aortic dissection is a life-threatening condition and must be treated as such irrespective of the causes. Life-threatening conditions may result in death or permanent disability within 24 hours if left untreated.
Common Causes
- Atherosclerosis
- Complication of cardiac procedures
- Chest trauma
- Connective tissue disorders
- Hypertension
- Vasculitis[5]
Management
Do's
Dont's
References
- ↑ Nienaber, CA.; Eagle, KA. (2003). "Aortic dissection: new frontiers in diagnosis and management: Part I: from etiology to diagnostic strategies". Circulation. 108 (5): 628–35. doi:10.1161/01.CIR.0000087009.16755.E4. PMID 12900496. Unknown parameter
|month=
ignored (help) - ↑ Tsai, TT.; Nienaber, CA.; Eagle, KA. (2005). "Acute aortic syndromes". Circulation. 112 (24): 3802–13. doi:10.1161/CIRCULATIONAHA.105.534198. PMID 16344407. Unknown parameter
|month=
ignored (help) - ↑ DEBAKEY, ME.; HENLY, WS.; COOLEY, DA.; MORRIS, GC.; CRAWFORD, ES.; BEALL, AC. (1965). "SURGICAL MANAGEMENT OF DISSECTING ANEURYSMS OF THE AORTA". J Thorac Cardiovasc Surg. 49: 130–49. PMID 14261867. Unknown parameter
|month=
ignored (help) - ↑ Daily, PO.; Trueblood, HW.; Stinson, EB.; Wuerflein, RD.; Shumway, NE. (1970). "Management of acute aortic dissections". Ann Thorac Surg. 10 (3): 237–47. PMID 5458238. Unknown parameter
|month=
ignored (help) - ↑ "Classification of diabetic retinopathy from fluorescein angiograms. ETDRS report number 11. Early Treatment Diabetic Retinopathy Study Research Group". Ophthalmology. 98 (5 Suppl): 807–22. 1991. PMID 2062514.