Atmospheric pollution with halothane in operating theatres. A clinical study using activated charcoal

Area of Science:

• Anesthesiology
• Environmental Health
• Chemical Engineering

Background:

• Operating theatre environments face challenges with anesthetic gas pollution.
• Halothane, a volatile anesthetic, contributes to operating room air contamination.
• Effective pollution control measures are crucial for healthcare worker safety and environmental protection.

Purpose of the Study:

• To evaluate the efficacy of activated charcoal canisters in reducing halothane pollution.
• To determine the influence of different anesthetic delivery methods (endotracheal intubation vs. facemask) on pollution reduction.
• To provide practical recommendations for minimizing anesthetic gas exposure in surgical settings.

Main Methods:

• Utilized activated charcoal canisters connected to the expiratory limb of the anesthetic circuit.
• Monitored halothane concentrations in the operating theatre environment during patient anesthesia.
• Compared pollution reduction efficacy between endotracheal intubation and facemask anesthesia.

Main Results:

• Activated charcoal canisters demonstrated considerable reductions in halothane pollution.
• The highest efficiency of halothane reduction was observed during cases requiring endotracheal intubation.
• Effective pollution control with facemask anesthesia necessitates a tight seal against the patient's face.

Conclusions:

• Activated charcoal canisters are an effective method for mitigating halothane pollution in operating theatres.
• Anesthetic delivery technique significantly impacts the efficiency of pollution control.
• Proper application of facemask anesthesia is essential to prevent environmental contamination.