PMC5497651_01
Electrocardiogram of the patient taken on the fourth day of his hospitalization due to dizziness and a low heart rate, showing sinus bradycardia.
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However, on the fourth day of his hospitalization, the patient developed bradycardia down to 40 beats per minute, which was associated with mild dizziness while standing without improvement of the heart rate, with the electrocardiogram showing a sinus bradycardia (Figure 1).