My husband has CKD and kidney function approx 30%. He is scheduled for a hernia repair and pre op liquid diet. Is it safe to have two days of only liquid when he has been limiting or at least monitoring fluids for past many months?

Someone with no heart disease or liver disease and only kidney disease does not need to limit his fluid intake.  He should limit his salt intake but there is no need to limit fluid intake for someone with chronic kidney disease (CKD) and an estimated glomerular filtration rate of 30 milliliters per minute per 1.73 meters squared.  A liquid diet should be safe for him.

 

 

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