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Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test
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Does Ramadan Fasting Affect Hydration Status and Kidney Function in CKD Patients?

Shadia Hassan1, Fadi Hassan2, Nur Abbas3

  • 1Department of Pediatric, Galilee Medical Center, Nahariya, Israel.

Annals of Nutrition & Metabolism
|March 9, 2018
PubMed
Summary

Ramadan fasting is safe for chronic kidney disease (CKD) patients, with no significant decline in kidney function observed. Hydration and brain natriuretic peptide (BNP) levels temporarily decreased but returned to normal post-fasting.

Keywords:
Brain natriuretic peptideChronic kidney diseaseFastingHydration statusRamadan

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Area of Science:

  • Nephrology
  • Internal Medicine
  • Endocrinology

Background:

  • Chronic kidney disease (CKD) affects renal function.
  • Ramadan fasting involves daily fluid and food restriction.
  • Impact of fasting on CKD patients is not well-established.

Purpose of the Study:

  • To investigate the effects of Ramadan fasting on hydration, kidney function, and brain natriuretic peptide (BNP) levels in CKD patients.
  • To assess the safety and impact of Ramadan fasting on individuals with CKD grades 2-4.

Main Methods:

  • Prospective cohort study comparing CKD patients who fasted during Ramadan with a non-fasting control group.
  • Measurements of hydration status, serum urea, creatinine, and plasma BNP levels were taken before, during, and after Ramadan.
  • Included 31 fasting and 26 non-fasting CKD patients (grades 2-4).

Main Results:

  • Fasting CKD patients showed a significant increase in serum urea during Ramadan, returning to baseline post-fasting.
  • Estimated glomerular filtration rate (eGFR) remained stable throughout the study period.
  • Hydration status and plasma BNP levels decreased significantly during fasting but normalized 4 weeks after Ramadan.

Conclusions:

  • Ramadan fasting can be undertaken by CKD patients (grades 2-4) without significant renal function deterioration.
  • Fasting appears to be reasonably safe for this patient group.
  • Monitoring hydration and BNP levels is advisable during and after fasting.