ECG changes in hypokalaemia
Last edited 02/2018 and last reviewed 07/2021
Hypokalaemia can cause:
- flattened T waves
- ST segment depression
- prolonged QT interval
- tall U waves
- atrial arrythmias
- ventricular tachycardia or ventricular fibrillation and torsade de pointes.
Note:
- ECG changes seen in hypokalaemia is not reliable since some severe hypokalaemic patients may not exhibit these changes (1)
Click here for an example ECG and further information
Reference: