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

BackgroundThe 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.MethodsAccording to the PtfV1 value, the patients were divided into four groups: PtfV1 (−)/PtfV1 (−), PtfV1 (−)/PtfV1 (+), PtfV1 (+)/PtfV1 (−), and PtfV1 (+)/PtfV1 (+).ResultsThe 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).ConclusionThe persistence of PtfV1 (+) and conversion of PtfV1/(−) to PtfV1/(+) at discharge significantly increased the incidence of MACEs.