Perhaps more importantly in theatre is the effect of electrostatic shocks which build up below 40%RH. The uncomfortable, surprising jolts caused by a sudden ‘static discharge can have potentially damaging and dangerous effects on surgery.
Consideration must also be given to the prevention of electrostatic sparks in relation to flammable anesthetic gases.
The humidity levels in maternity and obstetric departments should always be maintained as babies are particularly sensitive to a dry atmosphere. Also, low relative humidity can severely exacerbate the condition of patients with respiratory problems.