摘要:There is a gap in the literature with regard to the numerical standards of indoor air quality of operating rooms in veterinary hospitals. As an effort to fill this gap, the aim of this study is to determine the quantity of Culturable Airborne Bacteria (CAB) from different operating rooms of an operation unit in a veterinary hospital and to assess variations in microbial counts at different times and locations within this operation unit. For this purpose, we have determined appropriate procedures that could be pursued in a veterinary hospital by evaluating different sampling techniques and culture methods. Using Microbial Air Monitoring Sampl'air~™, indoor air samples were taken from the rooms of the operation unit twice a month in a period of four months. Colonies on Blood Agar or Plate Count Agar (PCA) plates were counted and CAB concentrations (cfu/m~3) were calculated according to Feller Correction Table. By this pilot study, the sampling techniques and culture methods were evaluated and we had a chance to decide on the adequate procedure that could be applied in a veterinary hospital. As a result, in terms of bacterial load, we found that the bacterial load in the samples taken after the operation had higher values than the ones taken before the operation. The importance of the indoor air quality and of the establishment of permanent standards are becoming more apparent, when it is considered that different operations of different animal species can be performed in any veterinary clinic.