PTa segment

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The PTa segment
Overt PTa depression in a patient with pericarditis

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.

References

  1. ABILDSKOV JA. The atrial complex of the electrocardiogram. Am Heart J. 1959 Jun;57(6):930-41. PubMed ID:13649561 | HubMed [Abildskov]