Fig. 4From: Consecutive electrocardiographic changes during percutaneous coronary intervention for acute coronary syndrome with high-grade atrioventricular block: a case reportCoronary angiography and ECG after PCI to the RCA. Successful PCI to the RCA lesions is shown a. The ECG improved to normal sinus rhythm with CRBBB b. The prolonged QRS interval normalized within three days c PCI, percutaneous coronary intervention; RCA, right coronary artery; ECG, electrocardiogram; CRBBB, complete right bundle branch blockBack to article page