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 V 1 (PtfV 1 ) 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 PtfV 1 value, the patients were divided into four groups: PtfV 1 (−)/PtfV 1 (−), PtfV 1 (−)/PtfV 1 (+), PtfV 1 (+)/PtfV 1 (−), and PtfV 1 (+)/PtfV 1 (+). Results The highest incidence of MACEs was the PtfV 1 (−)/(+) group with 24 patients (24.7%). The lowest incidence was the PtfV 1 (−)/(−) group with 28 patients (4.9%). Compared with the PtfV 1 (−)/(−) group, the risk for the occurrence of MACEs in the PtfV 1 (−)/(+)group was significantly increased (24.7% vs 4.9%, P = .000). Similarly, the risk in the PtfV 1 (+)/(+) group was also increased (10.1% vs 4.9%, P = .000). Conclusion The persistence of PtfV 1 (+) and conversion of PtfV 1 /(−) to PtfV 1 /(+) at discharge significantly increased the incidence of MACEs.