Figure Legends
Fig. 1. Chest X-ray on the day of admission (A), day 6 (B), and day 13 (C) of hospitalization. Ground glass opacities and nodular opacities in the left middle and both lower lobes deteriorated on day 6 of admission and improved on day 13 of admission
Fig. 2. ECG on the day of admission. Initial ECG was normal for the QRS complex and PR interval
Fig. 3. ECG of paroxysmal complete atrioventricular block. ECG strips presented paroxysmal complete atrioventricular block with slow escape ventricular beats
Fig. 4. ECG after recovery from a paroxysmal complete atrioventricular block. The ECG showed normal sinus rhythm with a heart rate of 68 beats/min and normal PR and QRS intervals