CONCEALED WPW SYNDROME PRESENTING LIKE LMCA DISEASE AND SIGNIFICANCE OF LEAD AVR

Wolff-Parkinson-White (WPW) syndrome is a complex arrhythmic syndrome with numerous pathways and varied ECG presentations. ST segment elevation in lead aVR with diffuse ST depression in most other leads is an ECG marker of Left main coronary artery (LMCA) occlusion but can also occur in lesions involving the left anterior descending artery and some left circumflexartery occlusions and in some tachyarrhythmias. We present here a case ofconcealed WPW syndrome presenting with ECG changes resembling left main disease.