The Relationship Between P-Wave Dispersion, QTc Dispersion, and Gestational Hypertension

Abstract Background To analyze the relationship between gestational hypertension and P-wave dispersion and QTc interval dispersion. Methods From January 2017 to December 2019, 213 pregnant women who met the diagnosis of hypertension were selected as gestational hypertension with 248 healthy pregnant women as controls. The basic data, P-wave dispersion, and QTc dispersion were compared between the 2 groups, and binary logistic regression analysis was performed. Results The minimum time of P wave (78.59 ± 9.32 vs. 94.61 ± 7.03 ms) and the minimum time of QTc (384.65 ± 21.69 vs. 401.91 ± 15.49 ms) in gestational hypertension were significantly lower than those in the controls. The dispersion of P wave (42.75 ± 9.94 vs. 14.91 ± 4.03 ms), QTc (57.15 ± 16.10 vs. 21.42 ± 6.07 ms), the maximum time of P wave (121.34 ± 7.22 vs. 112.53 ± 6.43 ms), and the maximum time of QTc (441.80 ± 25.42 vs. 429.74 ± 27.83 ms) in gestational hypertension were significantly higher than those in the controls (all P < 0.05). Logistic regression analysis showed that P-wave dispersion (odds ratio = 1.795, 95% confidence interval 1.266–2.546), QTc minimum time (odds ratio = 0.905, 95% confidence interval 0.833–0.983), and QTc dispersion (odds ratio = 1.216, 95% confidence interval 1.042–1.420) were correlated with gestational hypertension. Conclusions P-wave dispersion and QTc dispersion are associated with gestational hypertension.