Figure 1.
Floor plan of the operating theater, showing the positions of the samplers.
Table 1.
Mean values, standard deviations (SD), minimum and maximum values, median and quartiles (Q1–Q3) of the total bacterial load (CFU/m3) and counts of particles (Sampler A) of diameter ≥0.5 µm and diameter ≥5 µm (no./m3) in all the procedures monitored and in each of the two types of procedure.
Table 2.
Mean, standard deviation (SD), median and range of the values of procedure length (min), number of persons present in theatre, and door-opening rate (no./min) for all surgical procedures and for hip and knee replacements.
Figure 2.
Duration of use of the ultrasonic scalpel as a percentage of operating time, subdivided by type of procedure.
Table 3.
Spearman’s correlation coefficients (Rho) and significances (p) between the mean concentration of particulate measured by Sampler A (≥5 and ≥0.5 µm) and data on procedure duration (min), ultrasonic scalpel use, number of persons present in theatre and door-opening rates, referred to all procedures and broken down by procedure type (hip and knee replacement).