MRCP2-0447

A 28-year-old man is admitted to the cardiology ward after collapsing during a game of soccer. He cannot recall anything except running on the field and waking up in the ambulance. He has been experiencing occasional palpitations for the past 2-3 months, which he attributed to job-related stress. He has no history of chest pain and no significant medical history.

The patient’s vital signs are within normal limits. Upon auscultation, his chest sounds are clear, and his heart sounds are normal. His abdomen is soft and non-tender, and his neurological exam is unremarkable.

A bedside echocardiogram reveals a hypokinetic right ventricle.

What is the most distinctive finding on this patient’s ECG, given the probable diagnosis?