Correlation between P-wave characteristic ECG indexes and occurrence of paroxysmal atrial fibrillation in patients with different left atrial diameters
Abstract：Objective To explore the correlation between P-wave characteristic ECG indexes and the occurrence of paroxysmal atrial fibrillation (PAF) in patients with different left atrial diameters (LADs). Methods A total of 75 PAF patients were selected as the observation group. According to LAD, they were divided into group A (LAD≥40 mm, 16 cases), group B (35 mm≤LAD<40 mm, 25 cases) and group C (LAD<35 mm, 34 cases). Another 30 nonPAF people accepting physical examinations in our hospital during the same period were selected as the control group. ECG examination was performed in the above groups. The minimum Pwave duration (Pmin), the maximum P-wave duration (Pmax) and P-wave terminal force in lead V1 (PtfV1 ) were compared between the observation group and the control group. The indexes of Pmin, Pmax and PtfV1 were compared among the subgroup A, B and C in the observation group. The correlation between P-wave characteristics of ECG in patients with different LADs and the occurrence of PAF was analyzed with Pearson correlation coefficient. The ROC curve was used to evaluate the diagnostic value of P-wave characteristics of ECG for PAF. ResultsCompared with the control group, Pmin of the observation group significantly decreases while Pmax and PtfV1 significantly increase (P<0.05). With the increase of LAD, Pmin gradually decreases while Pmax and PtfV1 gradually increase among the three subgroups of the observation group (P<0.05); Pmin of PAF patients with different LADs is negatively related to LAD while Pmax and PtfV1 are positively related to LAD (P<0.05). In the diagnosis of PAF, the sensitivity, specificity, accuracy, positive and negative predictive value, and area under curve of the joint detection of Pmin, Pmax and PtfV1 are all significantly higher than those detected by any single index of the above (P<005). ConclusionT he P-wave ECG characteristics of patients with different LADs are closely related to the occurrence of PAF.
孙羽，王庆义，祝娜. 不同左心房内径患者心电图P波特征指标与阵发性房颤发生的相关性[J]. 实用心电学杂志, 2021, 30(4): 269-273.
SUN Yu1, WANG Qingyi2, ZHU Na1 . Correlation between P-wave characteristic ECG indexes and occurrence of paroxysmal atrial fibrillation in patients with different left atrial diameters. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2021, 30(4): 269-273.
