Presence of fragmented QRS may be associated with complex ventricular arrhythmias in patients with essential hypertension

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dc.contributor.authorBekar, Lütfü
dc.contributor.authorKalçık, Macit
dc.contributor.authorKilci, Hakan
dc.contributor.authorÇelik, Oğuzhan
dc.contributor.authorYetim, Mücahit
dc.contributor.authorDoğan, Tolga
dc.contributor.authorÖnalan, Orhan
dc.date.accessioned2019-05-10T09:38:56Z
dc.date.available2019-05-10T09:38:56Z
dc.date.issued2019
dc.departmentHitit Üniversitesi, Tıp Fakültesi, Dahili Tıp Bilimleri Bölümü
dc.description.abstractBackground: Ventricular arrhythmias (VAs)are frequent in hypertensive patients. Myocardial fibrosis is one of the components of left ventricular hypertrophy secondary to hypertension. Fragmented QRS (fQRS)on electrocardiography (ECG)has been shown to be a marker of myocardial fibrosis. In this study, we aimed to investigate the association between fQRS and complex VAs in patients with essential hypertension. Methods: Two hundreds consecutive patients who were diagnosed with hypertension were included in the study. The control group consisted of 153 age and sex matched healthy individuals. ECG and transthoracic echocardiography were performed to all patients. fQRS was defined as additional R' wave or notching/splitting of S wave in two contiguous ECG leads. All patients underwent 24-hour Holter monitoring and VAs were classified using Lown's scoring system. Lown class ?3 VAs were considered as complex VAs. Results: There was no significant difference with respect to age (52 ± 8 vs 52 ± 6 years, p = 0.836)and gender distribution (female: 64% vs 63%, p = 0.907)between the groups. As compared to the healthy individuals, prevalence of fQRS (67% vs 9.2%, p < 0.001)and complex VAs (19% vs 0%, p < 0.001)were significantly higher in patients with hypertension. Furthermore, complex VAs (25.4% vs 6.1%, p = 0.001)were significantly higher in hypertensive patients with fQRS. In multiple logistic regression analysis, left ventricular ejection fraction (OR: 1.11, 95%CI: 1.025 to 1.183; p = 0.006), left ventricular mass index (OR: 1.04, 95%CI: 1.021 to 1.107; p = 0.001)and presence of fQRS (OR: 5.605, 95%CI: 1.427 to 22.019; p = 0.014)were independent predictors for complex VAs. Conclusion: The presence of fQRS may be associated with complex VAs in patients with essential hypertension. Therefore, fQRS may be used in risk stratification of complex VAs and sudden cardiac death especially in hypertensive patients with left ventricular hypertrophy. © 2019 Elsevier Inc.
dc.identifier.citationBekar, L., Kalçık, M., Kilci, H., Çelik, O., Yetim, M., Doğan, T., & Önalan, O. (2019). Presence of fragmented QRS may be associated with complex ventricular arrhythmias in patients with essential hypertension. Journal of electrocardiology, 55, 20-25.
dc.identifier.doi10.1016/j.jelectrocard.2019.04.009
dc.identifier.endpage25en_US
dc.identifier.issn0022-0736
dc.identifier.scopusqualityQ3
dc.identifier.startpage20en_US
dc.identifier.urihttps://doi.org/10.1016/j.jelectrocard.2019.04.009
dc.identifier.urihttps://hdl.handle.net/11491/556
dc.identifier.volume55en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherChurchill Livingstone Inc.
dc.relation.ispartofJournal of Electrocardiology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEchocardiographyen_US
dc.subjectFragmented QRSen_US
dc.subjectHypertensionen_US
dc.subjectLeft Ventricular Hypertrophyen_US
dc.subjectVentricular Arrhythmiaen_US
dc.titlePresence of fragmented QRS may be associated with complex ventricular arrhythmias in patients with essential hypertension
dc.typeArticle

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