All you need to know about ‘U’ waves

A U wave is a small, rounded wave that follows the T wave on an electrocardiogram. Normally its polarity is that of the T wave. Its mechanism is unknown. The U wave becomes taller in hypokalaemia and inverted in heart disease. It may signify decreased potassium levels in the blood. Read more about U waves here.

U waves screenshot

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A Shock to the System – electrical injuries

Electric shock screenshot

Read more about the early management and clinical assessment for people who have sustained an electrical injury.