A predictive value of the dynamic changes of the P-wave terminal force in lead V1 in the long-term prognosis of patients with non-ST-segment elevation acute coronary syndrome

Abstract

Background: The purpose of this study was to investigate the prognostic value of dynamic changes of P-wave terminal force in lead V₁ (PtfV₁ ) at electrocardiogram (ECG) in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS) during the long-term major adverse cardiovascular events (MACEs) of patients.

Methods: According to the PtfV₁ value, the patients were divided into four groups: PtfV₁ (-)/PtfV₁ (-), PtfV₁ (-)/PtfV₁ (+), PtfV₁ (+)/PtfV₁ (-), and PtfV₁ (+)/PtfV₁ (+).

Results: The highest incidence of MACEs was the PtfV₁ (-)/(+) group with 24 patients (24.7%). The lowest incidence was the PtfV₁ (-)/(-) group with 28 patients (4.9%). Compared with the PtfV₁ (-)/(-) group, the risk for the occurrence of MACEs in the PtfV₁ (-)/(+)group was significantly increased (24.7% vs 4.9%, P = .000). Similarly, the risk in the PtfV₁ (+)/(+) group was also increased (10.1% vs 4.9%, P = .000).

Conclusion: The persistence of PtfV₁ (+) and conversion of PtfV₁ /(-) to PtfV₁ /(+) at discharge significantly increased the incidence of MACEs.

Keywords: P-wave terminal force in lead V1; electrocardiogram; major adverse cardiovascular event; non-ST-segment elevation acute coronary syndrome.