Key result
Oral sodium bicarbonate raises blood bicarbonate by ~3.5 mmol/L without worsening blood pressure or arterial stiffness.
Why the study?
The study evaluated the effect of a 3-month oral sodium bicarbonate administration on arterial wall stiffness, arterial pressure, and serum nutritional markers in non-dialysed CKD stages 3-5 patients with metabolic acidosis.
Does 3-month oral sodium bicarbonate supplementation (2 g daily) improve metabolic acidosis, serum nutritional markers, blood pressure, and arterial wall stiffness in non-dialysed patients with CKD stages 3–5 and metabolic acidosis?
Cohort (n=18)
Open-label
No
Does 3-month oral sodium bicarbonate supplementation (2 g daily) improve metabolic acidosis, serum nutritional markers, blood pressure, and arterial wall stiffness in non-dialysed patients with CKD stages 3–5 and metabolic acidosis?
Three months of oral sodium bicarbonate (2 g/day) in non-dialysed stage 3–5 CKD patients corrects metabolic acidosis and improves serum albumin and haemoglobin without worsening 24-hour blood pressure or arterial stiffness, though it is associated with increased NT-proBNP and antihypertensive/diuretic medication requirements.
Answers are grounded in this paper and cite their sources.
Supports bicarbonate for acidosis correction in non-dialysis CKD without vascular effects; leaves open long-term outcomes and safety in RCTs.
Background and Objectives: Kidneys play a key role in maintaining the acid−base balance. The aim of this study was to evaluate the effect of a 3-month oral sodium bicarbonate administration on arterial wall stiffness, arterial pressure and serum nutritional markers in non-dialysed patients with chronic kidney disease (CKD) stages 3−5 and metabolic acidosis. Methods: Eighteen CKD patients with eGFR < 45 mL/min/1.73 m2 and capillary blood bicarbonate (HCO3) < 22 mmol/L were enrolled in this single-centre, prospective study. Anthropometric parameters, pulse wave velocity, 24-h ambulatory blood pressure measurements, blood and urine parameters were assessed at the beginning and at the end of the study. The patients received supplementation with 2 g of sodium bicarbonate daily for three months. Results: A significant increase of pH: 7.32 ± 0.06 to 7.36 ± 0.06; p = 0.025, HCO3 from 18.7 mmol/L (17.7−21.3) to 22.2 mmol/L (20.2−23.9); p < 0.001 and a decrease in base excess from −6.0 ± 2.4 to −1.9 ± 3.1 mmol/L; p < 0.001 were found. An increase in serum total protein from 62.7 ± 6.9 to 65.8 ± 6.2; p < 0.013 and albumin from 37.3 ± 5.4 to 39.4 ± 4.8; p < 0.037 but, also, NT-pro-BNP (N-Terminal Pro-B-Type Natriuretic Peptide) from 794.7 (291.2−1819.0) to 1247.10 (384.7−4545.0); p < 0.006, CRP(C Reactive Protein) from 1.3 (0.7−2.9) to 2.8 (1.1−3.1); p < 0.025 and PTH (parathyroid hormone) from 21.5 ± 13.7 to 27.01 ± 16.3; p < 0.006 were observed, as well as an increase in erythrocyte count from 3.4 ± 0.6 to 3.6 ± 0.6; p < 0.004, haemoglobin from 10.2 ± 2.0 to 11.00 ± 1.7; p < 0.006 and haematocrit from 31.6 ± 6.00 to 33.6 ± 4.8; p < 0.009. The mean eGFR during sodium bicarbonate administration did not change significantly: There were no significant differences in pulse wave velocity or in the systolic and diastolic BP values. Conclusion: The administration of sodium bicarbonate in non-dialysed CKD patients in stages 3−5 improves the parameters of metabolic acidosis and serum nutritional markers; however, it does not affect the blood pressure and vascular stiffness.
No takes yet. Share an insight, caveat, or question.
Szczecińska et al. (2022) conducted a cohort in Non-dialysed chronic kidney disease stages 3-5 with metabolic acidosis (n=18). Oral sodium bicarbonate vs. Baseline (pre-treatment values; single-arm study) was evaluated on Capillary blood bicarbonate (HCO3) concentration at 3 months (p=<0.001). Oral sodium bicarbonate (2 g/day for 3 months) increased blood HCO3 from 18.7 to 22.2 mmol/L and albumin from 37.3 to 39.4 g/L without altering blood pressure or pulse wave velocity.
Synapse has enriched 10 related papers. Consider them for comparative context: