Category: speciality

Methaemoglobinaemia

Q: Why are Smurf’s Blue? 

A: Methaemoglobin (MetHb) of course!

MetHb is produced by oxidisation of the Iron in Haemoglobin (Hb) from Fe2+ to Fe3+

Fe3+ prevents Hb carrying oxygen (thus produces symptoms of hypoxia)

Often due to chemical ingestion, but may also be genetic

Treated with Methyl Blue & supportive measures

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Hypernatraemia

Hypernatraemia is a not a common presentation in ED, as intense thirst often prevents significant hypernatraemia in neurologically intact individuals. So… Mortality rates are high (20-70%) and the severity of hypernatraemia has been shown be an independent predictor of mortality.

However, there is little good data on hypernatremia to base guidance on, and definitions vary within the literature

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Measles

Suspected/Confirmed patients should be ISOLATED & wear PPE 

Treating Staff – (should not be; non-immunised, pregnant or immunocompromised)

  • single-use, disposable gloves
  • single-use, disposable apron (or gown if extensive splashing or spraying, or performing an aerosol generating procedure (AGP))
  • FFP3 – respiratory protective equipment (RPE)
  • eye/face protection (goggles or visor)

Patient

  • Surgical face mask

Background

  • Measles is highly infectious – (4 day prior to and after rash appears) suspected patients should be isolated within the ED
  • Measles Immunisation – 1 dose 90% effective, 2 doses 95% effective
  • Measles is a notifiable disease
EM3

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