Inhaled methoxyflurane as a prehospital analgesic in children

  1. Franz E Babl1,2,*,
  2. Sarah R Jamison1,
  3. Maureen Spicer1,
  4. Stephen Bernard3

Article first published online: 29 JUN 2006

DOI: 10.1111/j.1742-6723.2006.00874.x

Issue

Emergency Medicine Australasia

Emergency Medicine Australasia

Volume 18, Issue 4, pages 404–410, August 2006

Additional Information

How to Cite

Babl, F. E., Jamison, S. R., Spicer, M. and Bernard, S. (2006), Inhaled methoxyflurane as a prehospital analgesic in children. Emergency Medicine Australasia, 18: 404–410. doi: 10.1111/j.1742-6723.2006.00874.x

Author Information

  1. 1

    Emergency Department, Royal Children’s Hospital,

  2. 2

    Murdoch Children’s Research Institute, and

  3. 3

    Metropolitan Ambulance Service, Melbourne, Victoria, Australia

*Dr Franz E Babl, Emergency Department, Royal Children’s Hospital, Parkville, Vic. 3055, Australia. Email: franz.babl@rch.org.au

Publication History

  1. Issue published online: 29 JUN 2006
  2. Article first published online: 29 JUN 2006
  3. Accepted 27 March 2006

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Keywords:

  • analgesia;
  • children;
  • methoxyflurane;
  • prehospital

Abstract

Objective:  Despite widespread use of methoxyflurane as an inhaled analgesic by ambulance services in Australia there are no published data as to its use pattern, efficacy and safety in the prehospital setting. We set out to characterize methoxyflurane use in children in the prehospital setting.

Methods:  An observational case series was conducted over an 8 month period. Children who received methoxyflurane while being transported to a tertiary children’s hospital by ambulance were enrolled. We analysed indications for use, verbal numerical pain scores, adverse events and depth of sedation based on paramedic, patient, parent and ED staff surveys and review of ambulance care records.

Results:  During the study period 105 patients were enrolled with an age range of 15 months to 17 years (median age 11 years). Methoxyflurane was mainly used for extremity injuries (82%). Paramedic pain scores dropped from a mean of 7.9 (95% confidence interval [CI] 7.5–8.3) prior to methoxyflurane use to 4.5 (95% CI 3.9–5.0) at 2–5 min and to 3.2 (95% CI 2.8–3.7) at 10 min. There were no serious adverse events (one-sided 97.5% CI 0–3%). Mild adverse events occurred in 38 patients (36.2%; 95% CI 27.0–46.1%). Five of 15 (33.3%) patients under 5 years of age were deeply sedated.

Conclusion:  In the present paediatric case series methoxyflurane appears to be an efficacious analgesic with a low adverse events profile. In young children in particular it can briefly lead to deep sedation.

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