TY - JOUR T1 - The relationship between QT dispersion, fragmented QRS, and collateral circulation in patients with chronic total coronary artery occlusion TT - Kronik koroner arter total oklüzyonlu hastalarda fragmente QRS, QT dispersiyonu ile kollateral dolaşım arasındaki ilişki AU - Nurkoç, Serdar Gökhan AU - Karayiğit, Orhan AU - Günay, İmam PY - 2025 DA - March Y2 - 2025 DO - 10.32322/jhsm.1627315 JF - Journal of Health Sciences and Medicine JO - J Health Sci Med /JHSM /jhsm PB - MediHealth Academy Yayıncılık WT - DergiPark SN - 2636-8579 SP - 356 EP - 360 VL - 8 IS - 2 LA - en AB - Aims: Corrected QT dispersion (QTcD), prolonged QT dispersion (QTD), and fragmented QRS (fQRS) are known as indicators of high risk for cardiac arrhythmias. Within this context, our research was conducted to assess the role of coronary collateral circulation (CCC) on QTD and fQRS in participants with chronic total coronary artery occlusion. Methods: This study examined 131 participants with CCC in total. The participants were divided into two groups based on the Rentrop classification: group 1 (Rentrop 0 and 1) and group 2 (rentrop 2 and 3). Demographic data, laboratory results, and electrocardiogram findings were analyzed retrospectively.Results: Significantly, variability was observed between the poor and good collateral groups in terms of QTcD (91.3±21.6 vs 57.2±26.2, p KW - Fragmented QRS KW - coronary collateral circulation KW - QT dispersion N2 - Amaç: Düzeltilmiş QT dağılımı (QTcD), uzamış QT dağılımı (QTD) ve fragmente QRS (fQRS), kardiyak aritmiler için yüksek risk göstergeleri olarak bilinir. Bu bağlamda, araştırmamız, kronik total koroner arter oklüzyonu olan hastalarda kollateral dolaşımın (CCC) QTD ve fQRS üzerindeki rolünü değerlendirmeyi amaçlamıştır.Yöntemler: Çalışma, toplamda 131 CCC'li katılımcıyı inceledi. Katılımcılar, Rentrop sınıflamasına göre iki gruba ayrıldı: Grup 1 (Rentrop 0 ve 1) ve Grup 2 (Rentrop 2 ve 3). Demografik veriler, laboratuvar sonuçları ve elektrokardiyogram bulguları retrospektif olarak analiz edilmiştir.Bulgular: Zayıf ve iyi kollateral gruplar arasında QTcD (91,3±21,6 vs 57,2±26,2, p CR - Buxton AE, Ellison KE, Kirk MM, et al. Primary prevention of sudden cardiac death: trials in patients with coronary artery disease. J Interv Card Electrophysiol. 2003;9(2):203-206. doi:10.1023/a:1026236524273 CR - Meissner MD, Akhtar M, Lehmann MH. Nonischemic sudden tachyarrhythmic death in atherosclerotic heart disease. Circulation. 1991;84(2):905-912. doi:10.1161/01.cir.84.2.905 CR - Virmani R, Burke AP, Farb A. Sudden cardiac death. Cardiovasc Pathol. 2001;10(5):211-218. doi:10.1016/s1054-8807(01)00091-6 CR - Das MK, Suradi H, Maskoun W, et al. Fragmented wide QRS on a 12-lead ECG: a sign of myocardial scar and poor prognosis. 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J Cardiovasc Med (Hagerstown). 2010;11(11):801-809. doi: 10.2459/JCM.0b013e32833b9816 UR - https://doi.org/10.32322/jhsm.1627315 L1 - https://dergipark.org.tr/en/download/article-file/4553659 ER -