Critical proximal obstruction of LAD, transient intraventricular conduction disturbances, and Brugada ECG pattern: BrS?

Male Asian patient, 58 years old, mesomorph biotype, reported that approximately 72 hours ago he had presented several episodes of constrictive precordial pain, each of short duration (≤ 10 minutes) that ceased with rest, and some of them radiated to the mandible and the inner part of the left upper arm until the wrist. The patient also reported cold sweating and nausea triggered by usual activities such as walking or driving a car.