Abstract
BackgroundRamadan fasting is compulsory for all healthy adult Muslims. Although sick people are exempted from Ramadan fasting, some patients such as hemodialysis patients prefer to fast during Ramadan. The effect of Ramadan fasting on clinical outcomes and biochemical markers among hemodialysis patients is not clear. The aim of this study was to examine the effects of daily Ramadan fasting and partial Ramadan fasting on key biochemical and clinical markers among hemodialysis patients as compared to hemodialysis patients who chose not to fast during Ramadan.MethodsA prospective cohort study of 269 end stage renal disease patients were recruited from the hemodialysis unit in An-Najah National University Hospital, Nablus, Palestine. The participants were divided into three cohorts based on their plans for fasting during Ramadan in May 2018; Ramadan fasting group (RFG), Ramadan partial fasting group (RPFG) and Ramadan not-fasting group (RNFG). Key clinical and biochemical markers were measured before, during and after Ramadan.ResultsAfter adjustment for diabetic and hypertension status and other sociodemographic variables, RFG had higher mean inter-dialytic weight gain (IDWG) by 0.62 kg than RNFG (95% confidence interval (CI) 0.26, 0.99). RPFG also had slight increase in mean IDWG than RNFG by 0.35 kg (95% CI 0.11, 0.60). Additionally, RFG and RPFG had significant increase in mean serum potassium as compared to RNFG. Diabetes was independently associated with increased IDWG by 0.48 kg (0.25, 0.72). Diabetes and hypertension were associated with some independent changes in biochemical markers, but these were clinically negligible.ConclusionOur findings suggest that Ramadan fasting (fully or partially) is tolerable by hemodialysis patients and is not associated with important clinical complications. However, these patients should be made aware of the potential risk of fluid overload and hyperkalemia, if they decide to fast during Ramadan. Thus, they should be closely monitored and instructed to adhere to their dietary and fluid intake allowances. Further prospective cohort studies with comprehensive dietary measures and information on adverse clinical outcomes may provide more evidence about the tolerability and safety of Ramadan fasting by hemodialysis patients.
Highlights
Ramadan is the ninth month of the Islamic lunar calendar during which all healthy adult Muslims are required to abstain from eating any food and drinks from dawn to sunset, with special exceptions for those severely ill, menstruating females, pre-pubertal children and travelers [1,2,3]
Ramadan partial fasting group (RPFG) had slight increase in mean inter-dialytic weight gain (IDWG) than Ramadan not-fasting group (RNFG) by 0.35 kg
The current study found that Ramadan fasting group (RFG) and RPFG had slightly higher mean IDWG by 0.6 kg and 0.4 kg than RNFG, respectively
Summary
Ramadan is the ninth month of the Islamic lunar calendar during which all healthy adult Muslims are required to abstain from eating any food and drinks from dawn to sunset, with special exceptions for those severely ill, menstruating females, pre-pubertal children and travelers [1,2,3]. Other studies reported that Ramadan fasting is not associated with significant adverse effects on function of different body systems [14, 15]. Several studies have examined the effect of Ramadan fasting on physiological and biomedical markers in patients with kidney diseases. Some studies have reported that Ramadan fasting was associated with significant changes in clinical and biomedical markers, such as fluid overload and hyperkalemia, but with no significant complications requiring hospitalization [3, 20]. One large multicenter study in Egypt reported that out of 2055 hemodialysis patients 18.5% and 28.4% chose to fast daily or partially during Ramadan in 2016, respectively [23]. We hypothesize that Ramadan fasting is tolerable by hemodialysis patients and is not associated with significant changes in biochemical markers. The aim of this study was to examine the effects of daily Ramadan fasting and partial Ramadan fasting on key biochemical and clinical markers among hemodialysis patients as compared to hemodialysis patients who chose not to fast during Ramadan.
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