Key result
Renal transplant recipients demonstrated similar QTc dispersion compared to healthy individuals (54 ms vs 52 ms), indicating that renal transplantation may reverse the repolarization abnormalities typically seen in uremia.
Why the study?
Cardiovascular diseases are the most common cause of death in end-stage renal failure, and increased QTc interval and QT dispersion raise arrhythmia and mortality risks.
Does renal transplantation normalize QT and QTc dispersion compared to healthy individuals?
Cross-Sectional (n=150)
No
Does renal transplantation normalize QT and QTc dispersion compared to healthy individuals?
Renal transplantation appears to reverse the pathophysiological mechanisms that increase QT dispersion in uremic patients, normalizing it to levels seen in healthy individuals.
Supports potential QTc normalization post-transplant; hypothesis-generating and requires prospective validation before practice change.
Introduction Cardiovascular diseases are the most common cause of death in patients with end-stage renal failure. The increase in QTc interval time and QT dispersion increases the risk of cardiac arrhythmia and mortality. In our study, QT and QTc dispersions (QTcd) of patients who underwent renal transplantation were compared with normal healthy individuals. Methods Electrocardiograms (ECGs) of 80 renal transplant recipients and 70 healthy individuals were taken. QTc dispersion was calculated by using the longest and the shortest QT interval and QT dispersion and Bazett's formula. Results When the groups were compared, similar QT dispersion and QTc dispersion were observed (control group and renal transplant recipient patients: 35 ± 17 ms and 36 ± 16 ms and 52 ± 18 ms and 54 ± 22 ms, respectively). Conclusion No statistical difference was observed between QT and QTc dispersions of renal transplant patients compared to healthy individuals. This result shows that the increase in QT dispersion and pathophysiological mechanisms observed frequently in uremic patients can be reversed by renal transplantation.
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Durak et al. (2022) conducted a cross-sectional in End-stage renal disease post-renal transplantation (n=150). Renal transplantation vs. Healthy individuals was evaluated on QTc dispersion (ms) (p=NS). Renal transplant recipients demonstrated similar QTc dispersion compared to healthy individuals (54 ms vs 52 ms), indicating that renal transplantation may reverse the repolarization abnormalities typically seen in uremia.
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