PTa segment

The PTa segment is the part between the P wave and the Q. The PTa segment is sometimes called PTA (P - atrial T) segment or PR or PQ or PTp (P - T wave of P wave) segment.[1]. It can be depressed in pericarditis or atrial myocardial infarction.

The PTa segment

Overt PTa depression in a patient with pericarditis

References

1. ABILDSKOV JA. The atrial complex of the electrocardiogram. Am Heart J. 1959 Jun;57(6):930-41. DOI:10.1016/0002-8703(59)90303-5 |