Final answer:
An EKG tracing might have a U wave in certain situations, such as hypokalemia or bradycardia.
Step-by-step explanation:
An EKG tracing may have a U wave in certain situations.
The U wave is a small deflection that occurs after the T wave on an EKG. It is usually seen in leads that look at the precordial (chest) area of the heart, such as V2 and V3.
The U wave is thought to represent repolarization of the papillary muscles in the ventricles. It can be seen in conditions such as hypokalemia, bradycardia, or certain heart diseases.