Atrial infarction
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| Myocardial infarction Classification and external resources | |
| ICD-10 | I21.-I22. |
|---|---|
| ICD-9 | 410 |
| DiseasesDB | 8664 |
| MedlinePlus | 000195 |
| eMedicine | med/1567 emerg/327 ped/2520 |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-632-7753
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Overview
Atrial infarction is ischemic necrosis of the upper chamber of the heart (the atrium). It is a disease that has not been well studied.[1]
Incidence
In autopsy studies, the incidence is highly variable ranging from 0.7% to 42%. The largest series to date involved 182 patients, and the incidence in that study was 17%.
Pathophysiology
The right atrium is involved five times as often as the left, with the auricle the predominant site in either atria.
EKG Findings:
The following may be present: supraventricular arrhythmias, atrial rupture, hemodynamic compromise from loss of atrial "kick," and thromboembolic phenomena.
Electrocardiographic diagnostic criteria [2] [3] [4]
Major criteria
- PTa-segment elevation >0.5 mm in leads V3 and V6 with reciprocal depression of PTa segments in V1 and V2 leads.
- PTa-segment elevation >0.5 mm in lead I with reciprocal depressions in leads II and III.
- PTa-segment depression >1.5mm in precordial leads and 1.2mm in leads I, II and III, associated with any atrial arrhythmia.
Minor criteria
- Abormal P-waves, flattening of P-wave in M, flattening of P-wave
Echocardiography
Transesophageal echocardiography may demonstrate abnormalities.
References
- ↑ Lazar, E.J.; Goldberger, J.; Peled, H.; Sherman, M.; Frishman, W.H. (1988). "Atrial infarction: diagnosis and management.". Am Heart J 116 (4): 1058-63. Retrieved on 2007-10-10.
- ↑ Liu CK, Greenspan G, Piccirilio RT. Atrial infarction of the heart. Circulation 1961; 23: 331-8.
- ↑ Mayuga RD, Singer DH. Atrial infarction: clinical significance and diagnostic criteria. Pratical Cardiol 1985; 11: 142-60.
- ↑ Mayuga RD, Singer DH. Atrial infarction: clinical significance and diagnostic criteria. Pratical Cardiol 1985; 11: 142-60.
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Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
