The<unk>  T-wave<unk>  refers to a normal electrocardiographic variant in which T wave inversions are present in the right precordial leads (V1, V2, and V3) along with an early repolarization<unk> . Shallow T-wave inversion is usually found in the right precordial leads during infancy, and T wave rises upwards during childhood. If this inverted T-wave<unk>  sustained to adulthood, it is called<unk> .
Persistent juvenile T-wave pattern
Retrograde P wave
Sine wave pattern
Pulseless electrical activity
Low QRS voltage
Ventricular escape beat
U wave alternans
PR interval alternans