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Table 2 Mean values of sedimenting bacteria-carrying particles for different centerline velocities of the MLAF unit

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

MLAF screen velocity Operating table Instrument table one Instrument table two OR periphery
CFU/m2/h CFU/m2/h CFU/m2/h CFU/m2/h
(m/s) Mean (min–max) Mean (min–max) Mean (min–max) Mean (min–max)
off 180.78 (157–210) 225.80 (155–312) 51.06 (32–63) 382.85 (289–401)
0.2 43.94 (34–55) 96.44 (83–121) 27.86 (23–35) 380.36 (254–421)
0.4 14.02 (11–20) 37.42 (32–65) 19.92 (14–29) 393.69 (298–501)
0.6 15.84 (8–19) 29.54 (21–52) 18.80 (15–24) 390.50 (301–423)
0.8 14.70 (9–14) 22.72 (21–40) 17.44 (13–22) 384.85 (319–419)
1.0 14.60 (8–14) 17.32 (12–38) 14.46 (14–21) 386.07 (329–438)
  1. CFD simulation results were based on the passive air-sampling method. (CFU: colony-forming unit, MLAF: mobile laminar airflow).