Loading...
Clinicians are using computed tomographic angiography (CTA) increasingly to look for anatomic evidence of coronary artery disease. In this prospective observational study, investigators followed 568 low-risk patients (TIMI risk score, ≤2; JAMA 2000; 284:876) who underwent CTA as part of their work-ups in a Pennsylvania emergency department. A scan was considered negative if it showed <50% coronary stenosis and a calcium score <100.
Five hundred eight patients had negative scans: 476 (84%) were discharged after CTA, and 32 were admitted. Telephone follow-up revealed that no patient with a negative scan result died or experienced nonfatal myocardial infarction in the 30 days after presentation.