PMC8716199_01
Pre-cardiac arrest ECG.
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fig1
ECG showed sinus rhythm with PR interval prolongation and QRS widening (Figure 1).
Course of hospitalisation with serum potassium levels.
CRIE2021-3103011.002.jpg
PMC8716199_01_CRIE2021-3103011.002.jpg
fig2
His potassium levels gradually came back to normal levels on CRRT (Figure 2).