Journals / Anadolu Kardiyoloji Dergisi / 2007 / Cilt: 7 - Sayı: 3

Hemodiyaliz hastalarında vücut demir depoları ile düzeltilmiş QT dispersiyonu arasındaki ilişki

The relationship between iron stores and corrected QT dispersion in patients undergoing hemodialysis

Pages
270–274
Publication Date
2022-10-10
DOI
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Conclusion: Although hemodialysis patients have greater QTc dispersion than control subjects, their levels of iron stores as reflected by TSAT and ferritin levels, does not correlate with the degree of QT dispersion. (Anadolu Kardiyol Derg 2007; 7: 270-4)

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Cardiac arrhythmias commonly occur in hemodialysis patients.
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Key Findings & Data:QT dispersion (QTd=QTmax-QTmin) reflects heterogeneity of cardiac repolarization, and increased QTd is known to predispose the heart to ventricular arrhythmias and sudden cardiac death.
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Conclusion & Impact:Conclusion: Although hemodialysis patients have greater QTc dispersion than control subjects, their levels of iron stores as reflected by TSAT and ferritin levels, does not correlate with the degree of QT dispersion. (Anadolu Kardiyol Derg 2007; 7: 270-4)
🔬Design:Research Article
📍Scope:2007 Verileri
⚙️Variables:Domain Parameters

Abstract

Objective: Cardiac arrhythmias commonly occur in hemodialysis patients. QT dispersion (QTd=QTmax-QTmin) reflects heterogeneity of cardiac repolarization, and increased QTd is known to predispose the heart to ventricular arrhythmias and sudden cardiac death. The aim of our study was to assess the association of iron stores, reflected by transferrin saturation (TSAT) and ferritin, with the dispersion of corrected QT intervals (QTc) in patients undergoing hemodialysis. Methods: This cross-sectional, case-controlled study included 40 patients (23 men and 17 women) with renal failure undergoing hemodialysis (Patient group) and 27 subjects (10 men and 17 women) with normal renal function (Control group). In all patients and control subjects, QT intervals were measured on electrocardiogram, and QTc intervals and QTc dispersion were calculated. Electrolyte, hemoglobin and serum TSAT and ferritin levels were also determined.Results: Hemodialysis patients had significantly greater QTc dispersion compared to that of control subjects (61.7±23.0 msec vs. 46.0±15.7 msec; p=0.001). Though serum iron levels were significantly associated with greater QTc dispersion (r=0.324, p=0.042), other electrolyte levels, duration of dialysis, TSAT and serum ferritin levels were not. Conclusion: Although hemodialysis patients have greater QTc dispersion than control subjects, their levels of iron stores as reflected by TSAT and ferritin levels, does not correlate with the degree of QT dispersion. (Anadolu Kardiyol Derg 2007; 7: 270-4)

Özet

Amaç: Hemodiyaliz hastalarında kardiyak aritmilere sık rastlanılmaktadır. Kardiyak repolarizasyonun heterojenitesini yansıtan QT dispersiyonundaki (QTmax-QTmin) artışın, kalbi ventriküler aritmilere duyarlı hale getirdiği ve ani kalp ölümüne yol açabildiği bilinmektedir. Bu çalışmanın amacı hemodiyaliz hastalarında total vücut demirini yansıtan serum transferin satürasyonu (TSAT) ve ferritin ile bu hastaların düzeltilmiş QT dispersiyonu (QTc) ölçümleri arasındaki ilişkinin araştırılmasıdır. Yöntemler: Vaka-kontrollü, kros-seksiyonel çalışmaya hemodiyaliz tedavisi altında olan böbrek yetmezlikli 40 hasta (23 erkek, 17 kadın) (Hasta grubu) ve böbrek fonksiyonları normal olan 27 birey (10 erkek, 17 kadın) (Kontrol grubu) alınmıştır. Tüm hastalara ve sağlıklı bireylere elektrokardiyografi ile QT ve QTc dispersiyonu ölçümleri yapılmıştır. Serum elektrolit, hemoglobin, TSAT ve ferritin seviyeleri de tayin edilmiştir.Bulgular: Hemodiyaliz hastalarının QTc dispersiyonunun kontrol grubundaki bireylere kıyasla belirgin olarak artmış olduğu saptanmıştır(61.7±23.0’ye karşılık 46.0±15.7 ms; p=0.001). Serum demiri ile QTc dispersiyonu artışı arasında anlamlı ilişki tespit edilirken (r=0.324, p=0.042), serum elektrolit seviyeleri, diyaliz tedavisi süresi, TSAT ve serum ferritin düzeyleri ile QTc dispersiyonu artışı arasında anlamlı ilişki tespit edilememiştir.Sonuç: Hemodiyaliz hastalarında QTc dispersiyonu kontrol bireylere göre arttığı, TSAT ve ferritin düzeyi ile yansıtılan serum demir depolarının QT dispersiyonunun derecesi ile ilişkisinin olmadığı sonucuna varılmıştır. (Anadolu Kardiyol Derg 2007; 7: 270-4)

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Cite This Article

KALENDER, B., DERVİŞOĞLU, E., SEVİN, E., YILMAZ, A. (2022). Hemodiyaliz hastalarında vücut demir depoları ile düzeltilmiş QT dispersiyonu arasındaki ilişki. Anadolu Kardiyoloji Dergisi, Cilt: 7 - Sayı: 3, 270–274. https://ajindex.com/articles/437120

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