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Anaesthesia in the field. Spontaneous ventilation--a new technique
J Restall1, M C Thompson, I G Johnston
1Cambridge Military Hospital, Aldershot, Hampshire.
Anaesthesia
|November 1, 1990
Summary
A new field anesthesia method uses isoflurane inhalation with a ketamine, midazolam, and alfentanil infusion for spontaneously breathing patients. This approach addresses limitations of older anesthetic agents in military settings.
Area of Science:
- Anesthesiology
- Military Medicine
- Respiratory Physiology
Background:
- The British Army utilizes the Triservice Anaesthetic Apparatus for field operations.
- Trichloroethylene is unavailable in the UK, and halothane is not advised for repeated anesthetic use.
- Existing anesthetic protocols require adaptation for modern military medical requirements.
Purpose of the Study:
- To describe a modified anesthetic technique for field use in spontaneously breathing patients.
- To provide a viable alternative to outdated or unavailable anesthetic agents.
- To optimize patient care in austere environments using available resources.
Main Methods:
- A method utilizing existing equipment for spontaneously breathing patients is detailed.
- Isoflurane in oxygen-enriched air is administered via inhalation.
- A continuous background infusion of ketamine, midazolam, and alfentanil is employed.
Main Results:
- The described method offers a practical approach to field anesthesia.
- The combination of inhaled isoflurane and intravenous agents provides adequate anesthesia.
- The technique is suitable for patients breathing spontaneously.
Conclusions:
- This modified anesthetic technique is a feasible option for British Army field medical units.
- The method addresses the unavailability of certain anesthetic agents and provides a safe alternative.
- Further evaluation may be warranted to assess long-term efficacy and safety in diverse field conditions.