Fatih Aydin1, Meryem Aktoz2, Armagan Altun3, Erdal Gursul4, Ercan Aksit4. 1. Kocaeli State Hospital, Cardiology Department, Kocaeli, Turkey. 2. Trakya University Medical Faculty, Cardiology Department, Edirne, Turkey. 3. Baskent University Medical Faculty, Cardiology Department, Istanbul, Turkey. 4. Biga State Hospital, Cardiology Department, Canakkale, Turkey.
Abstract
BACKGROUND: Distinctions between electrocardiograms of female and male subjects have been recognized for many years. Due to these differences, arrhythmias in each gender have a tendency to differ. In our study, we aimed to compare electrocardiography intervals between men and women with short QRS durations. METHODS: Subjects with a QRS interval of ≤80 ms were included in the study. Patients were grouped by gender and the parameters were compared. Patients with diseases that might affect QRS interval and/or who were on medications were excluded. The electrocardiogram intervals of the subjects were measured, Holter monitors were placed, and parameters of time-based heart rate variation were analyzed. RESULTS: A total of 100 patients (55% female) were included in the study. According to statistical analysis, no significant difference between the genders was observed in the heart rate or in the parameters, such as QT, JT, JTp, and TpTe intervals or heart rate-corrected QTc, JTc, JTpc, and TpTec intervals, which affect repolarization and are known to be arrhythmia precursors by shortening or elongation. No statistically significant difference was found between the two groups for the parameters of heart rate variability time measures (SDNN, SDANN, rMSSD, and pNN50). CONCLUSION: We observed that when the QRS interval gets shorter, repolarization differences between the genders disappear. New studies are required on this subject.
BACKGROUND: Distinctions between electrocardiograms of female and male subjects have been recognized for many years. Due to these differences, arrhythmias in each gender have a tendency to differ. In our study, we aimed to compare electrocardiography intervals between men and women with short QRS durations. METHODS: Subjects with a QRS interval of ≤80 ms were included in the study. Patients were grouped by gender and the parameters were compared. Patients with diseases that might affect QRS interval and/or who were on medications were excluded. The electrocardiogram intervals of the subjects were measured, Holter monitors were placed, and parameters of time-based heart rate variation were analyzed. RESULTS: A total of 100 patients (55% female) were included in the study. According to statistical analysis, no significant difference between the genders was observed in the heart rate or in the parameters, such as QT, JT, JTp, and TpTe intervals or heart rate-corrected QTc, JTc, JTpc, and TpTec intervals, which affect repolarization and are known to be arrhythmia precursors by shortening or elongation. No statistically significant difference was found between the two groups for the parameters of heart rate variability time measures (SDNN, SDANN, rMSSD, and pNN50). CONCLUSION: We observed that when the QRS interval gets shorter, repolarization differences between the genders disappear. New studies are required on this subject.
Authors: Stephan E Lehnart; Michael J Ackerman; D Woodrow Benson; Ramon Brugada; Colleen E Clancy; J Kevin Donahue; Alfred L George; Augustus O Grant; Stephen C Groft; Craig T January; David A Lathrop; W Jonathan Lederer; Jonathan C Makielski; Peter J Mohler; Arthur Moss; Jeanne M Nerbonne; Timothy M Olson; Dennis A Przywara; Jeffrey A Towbin; Lan-Hsiang Wang; Andrew R Marks Journal: Circulation Date: 2007-11-13 Impact factor: 29.690
Authors: Christian Haarmark; Claus Graff; Mads P Andersen; Thomas Hardahl; Johannes J Struijk; Egon Toft; Joel Xue; Gordon I Rowlandson; Peter R Hansen; Jørgen K Kanters Journal: J Electrocardiol Date: 2010 Jan-Feb Impact factor: 1.438