Incidental LAD stenosis identified on non –gated chest CTA

A 57 –year–old male former smoker presented to the Emergency Department (ED) with blurry vision, headache, and generalized weakness. He was hypoxic on room air and ECG showed sinus tachycardia. A CT pulmonary angiogram was ordered in the ED and revealed no pulmonary embolism but incidentally noted a likely significant stenosis in the proximal LAD. Subsequent cardiac catheterization revealed a 90% stenotic lesion with percutaneous coronary intervention leading to symptom resolution. Unlike coronary CTA, CTPA is performed with non–ECG gated helical scanning and generates motion artifacts associ ated with myocardial contraction.
Source: The American Journal of Emergency Medicine - Category: Emergency Medicine Authors: Source Type: research