II. Definitions
- U Wave
- EKG variably present wave occurring between the T and P Waves
- May represent delayed repolarization of the bundle branches or Purkinje Fibers
III. Findings: Normal
- U Wave best seen in lead V3
- In Hypokalemia, may also appear as a biphasic T Wave in V1-3
- Mattu (2017) Crit Dec Emerg Med 31(3): 11
- U Wave with same polarity as T Wave
IV. Causes: Prominent U Wave
V. Causes: Inverted U Wave
- Myocardial Ischemia
- Myocardial strain pattern