Atrial infarction
| Myocardial infarction | |
| ICD-10 | I21-I22 |
|---|---|
| ICD-9 | 410 |
| DiseasesDB | 8664 |
| MedlinePlus | 000195 |
| eMedicine | med/1567 emerg/327 ped/2520 |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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. (1988). "Atrial infarction: diagnosis and management". Am Heart J. 116 (4): 1058–63. Retrieved 2007-10-10. Unknown parameter
|coauthors=ignored (help) - ↑ 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.