Chemistry (potassium)
Magnesium
Thyroid function tests for first presentation
Sinus bradycardia
ECG signs of<unk>  may be present but not always diagnostic
U waves in leads II, V-2, V-3, and V-4
Progressive flattening of T waves and depression of ST segment
Prolongation of the PR and QT intervals
U waves in leads II, V-2, V-3, and V-4
Progressive flattening of T waves and depression of ST segment
Prolongation of the PR and QT intervals
Hypokalemic periodic paralysis
Neuromuscular weakness
Thyrotoxic periodic paralysis
Upper motor neuron:
Tianeptine toxicity
CVA
Yohimbine toxicity
Hemorrhagic stroke