PMC5769782_01
Preoperative electrocardiography of the patient.
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Her heart rate was 58/min with sinus rhythm, and the QT interval was 44.5 mm on electrocardiography (ECG) (Figure 1).
Atrial fibrillation on the third postoperative day (fever and infection).
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On the third postoperative day, subfebrile fever (37.8 C) and atrial fibrillation (Figure 2) developed.