case_images: PMC6199886_01
case_images: EKGs obtained after the patient experienced cardiac arrest demonstrated a prolonged QTc.
case_images: CRIEM2018-5023954.001.jpg
case_images: PMC6199886_01_CRIEM2018-5023954.001.jpg
case_images: fig1
case_images: The post-arrest ECGs (Figure 1) were notable for normal sinus rhythm with a rate of 98-99, and a QTc of 495-521 ms (normal QTc is <440 ms in men).
case_images: EKG on hospital day 11 with a QTc of 611 ms with a serum potassium level of 3.8 mEq/L and a magnesium level of 2.1 mEq/L.
case_images: CRIEM2018-5023954.002.jpg
case_images: PMC6199886_01_CRIEM2018-5023954.002.jpg
case_images: fig2
case_images: Multiple post-arrest ECGs consistently demonstrated a prolonged QTc with measurements up to 611 ms despite optimization of electrolytes (Figure 2).