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U Wave
Aka: U Wave, EKG U Wave
- See Also
- Electrocardiogram
- Cardiac Electrophysiology Anatomy
- 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
- 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
- Causes: Prominent U Wave
- Hypokalemia
- Causes: Inverted U Wave
- Myocardial Ischemia
- Myocardial strain pattern
- Causes: Increased U Wave amplitude
- Digoxin (Digitalis)
- Quinidine
- Hypercalcemia
- Epinephrine
- Thyrotoxicosis