Table 3 Bacterial air sampling with settle plates during surgery and ultrasound examination

OR^c

Anaesthesia machine (38^d/29^e)

3 (2–6)

48.3% Staphylococcus spp. (21.4% S. epidermidis, 14.3% S. spp., 14.3% S. hominis, 14.3% S. pseudintermedius, 14.3% S. saprophyticus, 7.1% S. capitis, 7.1% S. caprae, 7.1% S. warneri), 17.2% Micrococcus spp. (100% M. luteus)

OR

Computer Table (38/61)

13 (8–18)

42.6% Staphylococcus spp. (26.9% S. spp., 26.9% S. epidermidis, 23.1% S. capitis, 11.5% S. hominis, 3.8% S. cohnii, 3.8% S. equorum, 3.8% S. saprophyticus), 26.2% Micrococcus spp. (81.3% M. luteus, 12.5% M. flavus, 6.3% M. cohnii)

OR

Shelf (38/47)

9 (5–11)

38.3% Staphylococcus spp. (38.9% S. spp., 22.2% S. capitis, 16.7% S. epidermidis, 11.1% S. aureus, 5.6% S. hominis, 5.6% S. lugdunensis), 34.0% Micrococcus spp. (68.8% M. luteus, 12.5% M. flavus, 6.3% M. spp., 6.3% M. lylae, 6.3% M. terreus)

UR^f

Computer Table (21/53)

31 (30–38)

35.8% Staphylococcus spp. (36.8% S. epidermidis, 21.5% S. spp., 15.8% S. capitis, 15.8% S. hominis, 5.3% S. equorum, 5.3% S. saprophyticus), 26.4% Micrococcus spp. (100% M. luteus)

UR

Ultrasound machine (21/55)

32 (31–38)

36.4% Staphylococcus spp. (30% S. hominis, 25% S. spp., 20% S. epidermidis, 10% S. lugdunensis, 5% S. aureus, 5% S. capitis, 5% S. petrasii), 18.2% Micrococcus spp. (60% M. luteus, 20% M. spp., 20% M. flavus), 14.5% Bacillus spp. (50% B. spp., 12.5% B. licheniformis, 12.5% B. megaterium, 12.5% B. pumilus, 12.5% B. weihenstaphanensis)