Electrocardiographical case. Young man with generalised myalgia
1Department of Emergency Medicine, Singapore General Hospital, Outram Road, Singapore 169608. Adeline_ngo@singhealth.com.sg
Abstract:
A 24-year-old man presented with generalised malaise and myalgia for three days. He presented to the Emergency Department after a fall at his workplace due to weakness. 12-lead electrocardiogram (ECG) showed normal sinus rhythm with ST depression in the leads V4 to V6, with a U wave. The tallest U wave appeared in V3. These ECG features are characteristic of hypokalaemia. ECG changes in hypokalaemia and differential diagnosis are discussed. A second case of thyrotoxic periodic paralysis with similar ECG changes of hypokalaemia is also presented.
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