PMC9076350_01
Electrocardiogram.
CRIM2022-5827664.001.jpg
PMC9076350_01_CRIM2022-5827664.001.jpg
fig1
Electrocardiogram showed sinus tachycardia but no u-waves (Figure 1).
Serum potassium trend.
CRIM2022-5827664.002.jpg
PMC9076350_01_CRIM2022-5827664.002.jpg
fig2
Carbimazole 20 mg OM and propranolol 20 mg TDS were continued, and serum potassium levels remained stable (Figure 2).