Hypermagnesemia

Background

High >3.5

Diagnosis

• 2–3 - Nausea
• 3–4 - Somnolence
• 4–8 - Loss of DTRs
• 8–12 - Respiratory depression
• 12–15 - Hypotension, heart block, cardiac arrest

DDX

1. Renal failure
2. Lithium
3. Volume depletion
4. Rhabdo

Treatment

1. IVF (NS)
2. Furosemide 20-40mg IVP
3. CaCl 10% 5mL IV over 5min

Source

Tintinalli