Predictive value of P wave dispersion and left atrial size of paroxysmal atrial fibrillation
WANG Yan-lin
DI Xin-xin
GAO Min
Abstract：Objective To explore the predictive value of P wave dispersion (Pd),the maximum P wave duration (Pmax) and left atrial size of paroxysmal atrial fibrillation (PAF).Methods 12-lead synchronous ECG and ultrasonic cardiograph were used to measure the Pd,Pmax and left atrial diameter(LAD) of 160 PAF patients (PAF group),and 160 patients without PAF were analyzed as control group.Results Compared with the control group,Pd[(47 ±9)ms vs (33 ± 4)ms],Pmax[(123 ± 14)ms vs (104 ± 11)ms],and LAD [(4.2 ± 0.6)cm vs (3.5 ± 0.4) cm] of PAF group were significantly prolonged (P ＜ 0.05).Pd,Pmax and LAD were similar in patients with PAF result form with a different etiology (P ＞ 0.05).Linear correlation analysis showed that Pd and Pmax had significant positive correlation with LAD (r =0.426,0.558,P ＜ 0.05).The sensitivity,specificity,accuracy,positive predictive value of Pmax≥110 ms for PAF were 81.9％,73.8％ and 75.7％ ;those of Pd≥40 ms were 81.3％,82.5％ and 82.3％.When combined with Pmax≥ 110 ms and Pd ≥40 ms,the sensitivity was 74.4％,the specificity was 91.3％ and the positive predictive value was 89.5％.The prediction of PAF sensitivity,specificity and positive predictive value were 68.1％,65.6％ and 66.5％,respectively,according to LAD acuity 4.0 cm for left atrium enlarge diagnostic criteria.Conclusion Pd and Pmax are significantly correlated with left atrial size of PAF patients,regardless of different etiology.Both of Pd and Pmax are predictive index of PAF and combined application can improve the specificity and positive predictive value.
Keywords：Atrial fibrillationHeart atriumP wave dispersion
Publication Date：2013-07-30
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：3( 881-883 )