Correlation between surface and air counts of particles carrying aerobic bacteria in operating rooms with turbulent ventilation: an experimental study

Wound ventilation with carbon dioxide: a simple method to prevent direct airborne contamination during cardiac surgery?

“…Friberg et al 23 found a strong correlation between the air count and the surface count of bacteria-carrying particles, while Lidwell et al 24 found the air count of bacteria near the wound to correlate with the infection rate in joint replacement operations. Conventional cardiac surgery is similarly exposed to airborne infection as it also involves the introduction of foreign material in the form of prosthetic devices and metal wires for fixation of the sternum.…”

“…We did not carry out simulated surgery in a fully ventilated operating room as this would provide insufficiently low contamination rates on a small 9 cm agar plate. 23,31 In order to increase the sensitivity of our settle plate sampling method the experiment was carried out in a place where there were people in activity outside the operating room. 32 The differences in contamination rates in the controls between the three experiments were therefore most probably due to differences in number and activity of the people present in the facilities.…”

The index of microbial air contamination

“…It is therefore difficult to find good correlation between the results. 35,40,53,60,75,[82][83][84] Through a series of parallel counts by settle plates used according to the 1/1/1 scheme (IMA) and the bacteriological air pollution detector (BAPD) active impact air sampler (PBI), Pitzurra found a regression line with an angular coefficient of 2.47 and a correlation coefficient (r) of 0.63. 83 The design of the BAPD sampler is the same as the SAS.…”

Effect of enhanced ultraviolet germicidal irradiation in the heating ventilation and air conditioning system on ventilator-associated pneumonia in a neonatal intensive care unit

“…32 In addition to reports of airborne transmission of infection in medical patients, surgical wound infections have been correlated with air bacteria levels. 33 In a preliminary report of eUVGI placed in HVACs that supply air in operating rooms, eUVGI decreased the number of positive bacterial cultures in the HVAC system as well as in the air sampled at the level of the operating table. 34 Pneumonia is the second most frequent nosocomial infection for all patient populations.…”