Electrocardiographic P-Wave Duration, QT Interval, T Peak to End Interval and Tp-e/QT Ratio in Pregnancy with Respect to Trimesters

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dc.authoridYarci Gursoy, Asli/0000-0002-7497-2414|akgun, nilufer/0000-0003-0414-9470;
dc.contributor.authorTanindi, Asli
dc.contributor.authorAkgun, Nilufer
dc.contributor.authorPabuccu, Emre Goksan
dc.contributor.authorGursoy, Asli Yarci
dc.contributor.authorYuce, Ebru
dc.contributor.authorTore, Hasan Fehmi
dc.contributor.authorDuvan, Candan Iltemir
dc.date.accessioned2025-10-24T18:09:22Z
dc.date.available2025-10-24T18:09:22Z
dc.date.issued2016
dc.departmentMalatya Turgut Özal Üniversitesi
dc.description.abstractBackground: P-wave duration helps to determine the risk of atrial arrhythmia, especially atrial fibrillation. QT interval, T peak to end interval (Tp-e), and Tp-e/QT ratio are electrocardiographic indices related to ventricular repolarization which are used to determine the risk of ventricular arrhythmias. We search for any alterations in electrocardiographic indices of arrhythmia in the pregnancy period with respect to trimesters. Methods: We enrolled 154 pregnant and 62 nonpregnant, healthy women into this cross-sectional study. Maximum and minimum P-wave durations (Pmax, Pmin), and QT intervals (QTmax, QTmin) were measured from 12 leads. QT measurements were corrected using Fridericia (QTc-Fr) and Bazett's (QTc-Bz) correction. Tp-e interval was obtained from the difference between QT interval, and QT peak interval (QTp) measured from the beginning of the QRS until the peak of the T wave. Tp-e/QT ratio was calculated using these measurements. Results: Pmax were 93.0 +/- 9.1, 93.9 +/- 8.9, 97.9 +/- 5.6, 99.0 +/- 6.1 in nonpregnant women, first, second, third trimesters of pregnancy, respectively (P = 0.001); whereas Pmin values were not significantly different. QTc-Fr max were 407.4 +/- 14.2, 408.5 +/- 16.1, 410.1 +/- 13.1, 415.1 +/- 10.1 (P = 0.007); Tp-e were 72.7 +/- 6.2, 73.2 +/- 6.5, 77.2 +/- 8.9, 87.2 +/- 9.6 (P < 0.001); and Tp-e/QT were 0.17 (0.14-0.20), 0.17 (0.14-0.20), 0.18 (0.15-0.23), 0.20 (0.16-0.25) in nonpregnant women, first, second, and third trimesters of pregnancy respectively (P < 0.001). None of the participants experienced any arrhythmic event. Conclusions: P-wave duration is prolonged in the second trimester, and resumes a plateau thereafter. Maximum QTc interval, Tp-e interval and Tp-e/QT ratio are increased in the late pregnancy. Although these indices are altered during the course of pregnancy, they all remain in the normal ranges.
dc.identifier.doi10.1111/anec.12285
dc.identifier.endpage174
dc.identifier.issn1082-720X
dc.identifier.issn1542-474X
dc.identifier.issue2
dc.identifier.pmid26084968
dc.identifier.scopus2-s2.0-84931026449
dc.identifier.scopusqualityQ2
dc.identifier.startpage169
dc.identifier.urihttps://doi.org/10.1111/anec.12285
dc.identifier.urihttps://hdl.handle.net/20.500.12899/3606
dc.identifier.volume21
dc.identifier.wosWOS:000377594600007
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofAnnals Of Noninvasive Electrocardiology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20251023
dc.subjectP-wave duration; QT interval; T peak to end interval; Tp-e/QT ratio
dc.titleElectrocardiographic P-Wave Duration, QT Interval, T Peak to End Interval and Tp-e/QT Ratio in Pregnancy with Respect to Trimesters
dc.typeArticle

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