PMC4712208_01
(A) ECG on admission showing normal sinus rhythm. (B) ECG on day three showing Mobitz type I atrio-ventricular block. Blue arrows indicate the P waves. (C) ECG showing a paced rhythm on day three. (D) ECG following discontinuation of pacing showing normal sinus rhythm.
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His serum potassium was 4.1 mmol/l RF [3.6-5.2], while magnesium and calcium levels were within the normal range. His renal and liver functions were normal and a 12 lead electrocardiogram (ECG) on admission (Fig. 1A) revealed normal sinus rhythm at a rate of 70 bpm. His 12 lead ECG (Fig. 1B) revealed Mobitz type I A-V block, there was no ST elevation or evidence of ischemia. Pacing was commenced at this stage (Fig. 1C) and he was treated with intravenous methylprednisolone at a dose of 8 mg/kg per day for 2 days. A 12 lead ECG (Fig. 1D) done after discontinuation of pacing revealed normal sinus rhythm.