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Hyponatraemia

A Canadian clinical summary of hyponatraemia, with source-attributed priorities and explicit jurisdiction boundaries.

JurisdictionCanada
Source check2026-08-20
Clinical reviewiatroX editorial team · Clinical editorial review · reviewed 2026-08-20 · due 2027-08-20
AudienceHealthcare professionals practising in Canada
This is an iatroX educational summary of named Canada sources, not an official guideline. It does not replace the complete source documents, local policy, specialist advice or clinical judgement. British Columbia is used as an explicit Canadian implementation example, not as a national rule. Verify the equivalent pathway, formulary and escalation route in the patient’s province or territory.

British Columbia source: bounded use

Hyponatremia – Diagnosis and Treatment supplies a Canadian implementation example for this summary. It must not be presented as the rule outside British Columbia.
sources for this section:ECBC hyponatremia

Source-attributed clinical priorities

  • Confirm hypotonic hyponatremia and assess symptoms, acuity, volume status, glucose, kidney function and relevant medicines.
  • Treat severe neurologic symptoms as an emergency with monitored correction and frequent sodium measurement.
  • Avoid overly rapid correction and seek specialist help when chronicity, cause or safe correction limits are uncertain.
  • Base the correction plan on symptoms and chronicity as well as the sodium concentration.
sources for this section:ECBC hyponatremia

Practical assessment and management workflow

1
Confirm true hypotonic hyponatremia and correct interpretation for glucose where relevant.
2
Assess volume, urine osmolality and sodium, kidney, adrenal and thyroid function and medicine causes.
3
Treat the cause and choose monitored fluid restriction, saline or other therapy for the phenotype.
4
Measure sodium frequently during active correction and adjust to prevent overcorrection.
sources for this section:ECBC hyponatremia

Safety, red flags and urgent escalation

  • Use monitored hypertonic saline for severe neurologic symptoms under an emergency protocol.
  • Prevent osmotic demyelination by respecting correction limits and reversing overcorrection when required.
  • Treat hypovolemia, adrenal crisis or other urgent causes rather than assuming SIADH.
sources for this section:ECBC hyponatremia

Confirm the local pathway before acting

British Columbia is used as an explicit Canadian implementation example, not as a national rule. Verify the equivalent pathway, formulary and escalation route in the patient’s province or territory.
sources for this section:ECBC hyponatremia

Source and implementation boundary

Read this educational summary with the linked source, current Canadian product information where medicines are involved, and the applicable provincial or territorial pathway. Local formularies, reporting duties, referral routes and service availability can differ.
sources for this section:ECBC hyponatremia

Source documents

Use the linked source documents for complete recommendations, evidence grading, exclusions and implementation detail.

  1. Emergency Care BCHyponatremia – Diagnosis and TreatmentLast reviewed 2021-10-29 · accessed 2026-08-20
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