A patient admitted for substernal chest pain is transferred…
A patient admitted for substernal chest pain is transferred to the cardiac care unit (CCU) after nitroglycerine was given and thrombolytic therapy was initiated. Physical examination reveals a heart rate of 84 bpm, respiration of 28 bpm, and BP of 116/68 mm Hg. His chest pain is relieved. An additional sign of successful re-perfusion would be: