§ Sir S. McAdden
asked the Minister of Health how many operating theatres there are in the National Health Ser- 298W vice; how many of these are air-conditioned; how many such theatres are under construction; and of these how many will be air-conditioned.
§ Mr. K. Robinson
Information about the total number of operating theatres in the National Health Service and whether they are air-conditioned is not available. In the period 5th July, 1948–30th September, 1966, 524 new operating theatres were provided and a further 226 are currently being constructed. For a number of years it has been normal to provide positive pressure ventilation by warmed and filtered air in new operating theatres. Where the type of surgery justifies it, full temperature and humidity control is provided in addition.