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International Journal of Pediatrics، جلد ۶، شماره ۳، صفحات ۷۳۴۵-۷۳۵۱
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عنوان انگلیسی Atrial and Ventricular Electrocardiographic Dromotropic Disturbances in Down Syndrome Patients with Structurally Normal Heart: A Cross-Sectional Study
چکیده انگلیسی مقاله Background: We designed a cross-sectional study to determine electrocardiographic disorders in Down syndrome patients with congenitally normal hearts in a bid to predict fatal cardiac arrhythmia in the future. Materials and Methods: We investigated 60 children with DS without congenital abnormal hearts. Sixty healthy juveniles were also included in the study as a control group. Physical examination, electrocardiography, and echocardiography were performed in all subjects. Corrected QT interval (QTc) was measured according to Bazett's formula. Results: Patients with DS consisted of 32 males (53.33%), and 28 females (46.66%), aged 6–13 (9.21 ± 6.24) years old. Healthy subjects comprised 31 males (51.66%), and 29 females (48.33%) with a mean age of 9.15 ± 5.01. The two groups were significantly different in terms of heart rate (P=0.006), maximum P-wave duration (P=0.001), and P-wave dispersion (PWd, P=0.0001). There was no statistically significant difference regarding minimum P-wave duration (P=0.176). The patients with DS had a greater maximum QTc interval, QT dispersion, and corrected QT interval dispersion (QTc-d) than the healthy control subjects (P=0.001). However, there was no difference in maximum QT interval and minimum QTc interval between the two groups (P=0.67 and P=0.553, respectively). A positive correlation was found between age, heart rate, and all electrocardiographic variables. Conclusion: All DS patients, even in the absence of concomitant congenital heart disease should be followed up carefully by electrocardiography, looking for increased PWd and QTc-d to detect predisposed cases to arrhythmia.
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نویسندگان مقاله یزدان قندی | yazdan ghandi
assistant professor, department of pediatric cardiology, faculty of medicine, arak university of medical sciences, arak, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

مهرزاد شریفی | mehrzad sharifi
assistant professor, department of cardiovascular surgery, faculty of medicine, arak university of medical sciences, arak, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

دانیال حبیبی | danial habibi
master of sciences in biostatistics, department of biostatistics and epidemiology, faculty of medicine, arak university of medical sciences, arak, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

سعید علی نژاد | saeed alinejad
assistant professor, department of neonatology, faculty of medicine, arak university of medical sciences, arak, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

علی ارجمند | ali arjmand
assistant professor, department of pediatrics, faculty of medicine, arak university of medical sciences, arak, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

سارا نیکدل | sara nikdel
general practitioner, faculty of medicine, arak university of medical sciences, arak, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

نشانی اینترنتی http://ijp.mums.ac.ir/article_9648.html
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