Experimental measurements of surgical microenvironments in two operating rooms with laminar airflow and mixing ventilation systems

At present, laminar airflow (LAF) systems and mixing ventilation (MV) are two commonly used solutions for operating rooms (ORs) to ensure the required indoor air quality. However, recent studies have shown that there is little difference in prevalence of surgical site infection (SSI) LAF MV systems. The objective this study was compare performance an system with ORs at St. Olavs hospital, Norway. In study, all experimental measurements were conducted real This found velocity above incision approximately times higher OR than MV. use lamps different patterns may contribute microenvironment