Sodium Bicarbonate Use in Patients with Elevated Creatinine

Indications for Sodium Bicarbonate in Renal Impairment

The American Journal of Kidney Diseases recommends sodium bicarbonate supplementation for patients with chronic kidney disease who have serum bicarbonate concentrations <22 mmol/L to maintain serum bicarbonate within normal range and potentially slow the decline of renal function 1, 2
For patients with CKD and serum bicarbonate <22 mmol/L, oral bicarbonate supplementation is suggested to maintain serum bicarbonate within normal range, as recommended by the American Journal of Kidney Diseases and Kidney International 1, 2, 3
Sodium bicarbonate may be used in prevention of contrast-induced nephropathy (CIN) in patients undergoing radiographic procedures, though evidence is mixed regarding its superiority over isotonic saline, according to the European Heart Journal 4, 5

For patients who find commercial tablets unpalatable or expensive, baking soda from a food store (1/4 teaspoon = 1 g of sodium bicarbonate) may be used as an alternative, as suggested by the American Journal of Kidney Diseases 1
For contrast-induced nephropathy prevention: 154 mEq/L sodium bicarbonate administered as 3 mL/kg for 1 hour before contrast medium, followed by 1 mL/kg/h for 6 hours after the procedure, as recommended by the European Heart Journal 4, 5, 6

Sodium bicarbonate supplementation should be used with caution in patients at risk for volume overload, particularly those with congestive heart failure, as recommended by the American Journal of Kidney Diseases 1

The American Journal of Kidney Diseases recommends assessing serum bicarbonate level and considering sodium bicarbonate supplementation if <22 mmol/L in CKD patients 1, 2
For contrast procedures in patients with renal impairment, the European Heart Journal recommends hydration with either isotonic sodium chloride or sodium bicarbonate, and considering sodium bicarbonate particularly when rapid pre-treatment is needed 4, 5
The European Heart Journal and American Journal of Kidney Diseases also recommend adding oral N-acetylcysteine (600 mg twice daily) before and after procedure 4, 5, 7

The American Journal of Kidney Diseases recommends that sodium bicarbonate is not used for routine suppression of elevated PTH concentrations in CKD patients 1, 2
The European Heart Journal notes that evidence for sodium bicarbonate's effectiveness in preventing contrast-induced nephropathy is mixed; some studies show benefit while others show no difference compared to isotonic saline 4, 5
The American Journal of Kidney Diseases recommends that patients should be monitored for potential sodium and fluid overload, especially those with heart failure or hypertension 1