PMC4734662_01
ECG at the time of presyncopal attack (29 hours after admission).
ccrep-9-2016-005f1.jpg
PMC4734662_01_ccrep-9-2016-005f1.jpg
f1-ccrep-9-2016-005
The ECG revealed a wide complex tachycardia (Fig. 1), and his serum potassium level was 2.0 mmol/L.
ECG upon arrival at King Fahad Medical City (four days after cardioversion).
ccrep-9-2016-005f2.jpg
PMC4734662_01_ccrep-9-2016-005f2.jpg
f2-ccrep-9-2016-005
ECG (Fig. 2) showed normal sinus rhythm and narrow QRS complex.
Thyroid scintigraphy.
ccrep-9-2016-005f3.jpg
PMC4734662_01_ccrep-9-2016-005f3.jpg
f3-ccrep-9-2016-005
TC-99m showed diffuse enhancement of the enlarged thyroid gland bilaterally (Fig. 3). The diagnosis of thyrotoxic periodic paralysis (TPP) due to Graves' disease was made, and the patient was started on carbimazole and continued on bisoprolol as provided by the referring hospital.