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Minimizing Myocardial Ischemic Injury by Cool dialysate in maintenance hemodialysis patients: A Randomized Controlled Trial

• 2021
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Publication Information
Authors El-MetwalLy Lotfy El-Shahawy, Hassan Galal Abdelsalam, Ashraf Talaat Mahmoud, Mohamed El Tantawy Ibrahim, and Heba Ahmed Mohamed Mokhtar
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publication.type Local
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Abstract
Background: Emerging evidence supports a cardiovascular protective role of Cooled Dialysis (CD) in incident Hemodialysis (HD) patients, whether this benefit can be extended to maintenance HD patients remains to be established.
Aim and objectives: The aim of the present study was to assess the impact of CD by lowering Dialysate temperature (dt) 0.5 ℃ below Core Body Temperature (CBT), on minimizing myocardial ischemia in maintenance HD patients (>1 year on HD).
Patients and Methods: from March 2019 to January 2021, we randomized one hundred maintenance HD patients to receive either Cooled Dialysis (dt - 0.5 ℃ below CBT, intervention) or Standard Dialysis (dt= CBT, control) for 12 months. Over the study period, serial measurements of ECG, Echocardiography, and myocardial enzymes (CK-MB & Troponin-T) were performed for the whole study population as surrogates for myocardial ischemic injury.

Results: By the end of 12-months, compared to Standard Dialysis (ST) patients, Cooled Dialysis (CD) patients had overall less incidence of new myocardial ischemia (composite surrogate outcomes: ECG, Echo and CK-MB) (p=0.032). In logistic regression analysis, CD was found to be independently protective against myocardial ischemia ((OR 0.54, p-value 0.033, CI: 0.3-0.95).

Conclusion: In maintenance HD patients, Cooled Dialysis might help decrease myocardial ischemia with a reasonable safety profile. Further studies are warranted to explore these findings.