PMC7184078_01
The electrocardiography at the initial visit. The patient's heart rate was 20 beat per minute, and complete right bundle branch block (QRS: 144 ms) was observed.
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Inverted T waves were seen in leads II, III, aVF, and V1-4 (Fig. 1).
The post-implantation electrocardiography at rest under pacing. The pacemaker settings were VVI-closed-loop stimulation (CLS) mode, basic rate of 60, and sensor rate of 120 ppm. The heart rate is 77 beat per minute, indicating that the CLS function is working.
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An inspection of the pacemaker and ECG Holter monitoring after the patient's pacemaker implantation indicated that even though pacing was being performed by a lead placed on the epicardial side of the coronary vein, the CLS functionality was good, as indicated by an increased pacing rate (Fig. 2) and the following data: total heart beats (/day), 100,108; maximum HR (bpm), 121; minimum HR (bpm), 59; average HR (bpm), 70; and longest RR interval (sec), 1.22 (Table).
Post-implantation X-ray images taken at the outpatient clinic after discharge. Postero-anterior (left) and lateral (right) views. A pacing lead (arrow) placed in the coronary vein (lateral branch) is shown. No findings indicating pulmonary congestion or pleural effusion are seen.
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Post-pacemaker implantation chest X-ray performed after the patient's discharge did not show pulmonary congestion (Fig. 3).