| Wharfdale Hospital | BAM FM Case study | 1 Challenge The hospital facilities are operational on weekdays only, however the Heating, Ventilation and Air Conditioning (HVAC) system in the two Operating Theatres was on constantly, whether or not the theatre was actually in use. This was due to concerns over airborne contamination and infection control. solution An experimental study at the Freiburg University Hospital in 2003 had concluded that shutting down Operating Theatre ventilation during off- duty periods was hygienically safe, provided the HVAC systems had been restarted for some time before surgery procedures began. It also concluded that low microbial contamination was only required during the time between incision and suture, i.e. microbial

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