What type of fire extinguisher should be available for laser surgery?

• A. Water
• B. Foam
• C. Halon
• D. Dry chemical

Answer: (C)

Laser surgery creates a fire risk around drapes and alcohol-based prep near delicate equipment. The extinguisher chosen should suppress a fire quickly without leaving residue that could foul optics or contaminate the sterile field, and it must be suitable for electrical/electronic equipment. Halon, a clean extinguishing agent, interrupts the flame chemistry and does not leave conductive or corrosive residue, making it ideal for an operating room with laser devices and other electronics. Water or foam would risk electrical hazards or damage to optics, and dry chemical can leave residues that could contaminate the laser system or obscure lenses. Therefore, Halon is the best fit.