Pituitary & hypothalamus

Overcorrection and undercorrection with fixed dosing of bolus hypertonic saline for symptomatic hyponatremia

Eur J EndocrinolPublished Retrospective cohort study

Authors' conclusion

Our real-world data suggest that fixed dosing of bolus hypertonic saline may expose patients with low and high body weight to more overcorrection and undercorrection, respectively. Prospective studies are needed to develop and validate individualized dosing models.

Study context

Population
Patients treated with ≥1 bolus 100 or 150 mL 3% NaCl for symptomatic hyponatremia, 2017–2021
Participants
180 patients
Exposure
Body weight categories with fixed-dose bolus 3% NaCl
Outcome
Overcorrection (plasma sodium rise >10 mmol/L/24 h, >18 mmol/L/48 h, or relowering therapy) and undercorrection (rise <5 mmol/L/24 h)
Methodological detailssingle-center
  • Single-center

Main finding

As reported in the abstract

Overcorrection

32 patients

18%

Undercorrection

52 patients

29%

Observational data: associations, not effects.

Further findings

Plasma sodium · 24 h and 48 h

Plasma sodium rose from 120 mmol/L to 126.4 mmol/L (24 h) and 130.4 mmol/L (48 h)

Overcorrection in patients without rapidly reversible causes

Overcorrection still occurred more often in patients ≤60 kg

Original publication

Overcorrection and undercorrection with fixed dosing of bolus hypertonic saline for symptomatic hyponatremia. Eur J Endocrinol. Published 7 March 2023. doi:10.1093/ejendo/lvad028

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