<unk>  is an electrocardiographic pattern of<unk>  segment<unk>  whereby the QRS complex, the<unk>  segment and the T wave merge to form a large upright monophasic deflection called a<unk> ".  This electrocardiographic pattern has been associated with poorer clinical outcomes in the setting of<unk>  segment<unk>  myocardial infarction.
Tombstone ST elevation
U wave alternans
T wave alternans
Sine wave pattern
T wave inversion
PR interval alternans
Peaked T waves
Inverted P wave