A patient with severe COPD on home oxygen is having an excision of a submandibular tumour under local anaesthesia. The best way to prevent fire in the operating room is:
A. seal the surgical site from the patients airway with adhesive drapes
B. use bipolar instead of monopolar diathermy
C. decr FIO2 to maintain sats 97%
D. use alcoholic chlorhex instead of iodine
E. add nitrous oxide to the inhaled gases to reduce the FiO2 and provide sedation
Answer: B