Does a mobile laminar airflow screen reduce bacterial contamination in the operating room? A numerical study using computational fluid dynamics technique

Table 1 Mean values of volumetric bacteria-carrying particles for different centerline velocity of the mobile laminar screen unit

MLAF screen velocity	Operating table	Instrument table one	Instrument table two
MLAF screen velocity	CFU/m³	CFU/m³	CFU/m³
(m/s)	Mean (min–max)	Mean (min–max)	Mean (min–max)
off	19.08 (9–32)	18.12 (13–28)	7.66 (5–24)
0.2	9.94 (4–12)	8.36 (3–13)	1.82 (1–4)
0.4	1.21 (1–4)	1.14 (0–5)	0.90 (0–3)
0.6	0.72 (0–3)	0.08 (0–1)	0.08 (0–1)
0.8	0.04 (0–1)	0.06 (0–1)	0.00 (0–0)
1.0	0.00 (0–0)	0.00 (0–0)	0.00 (0–0)

CFD simulation results were based on active air-sampling method. (CFU: colony-forming unit, MLAF: mobile laminar airflow).

ISSN: 1754-9493