title: [Bacteriologic examination in experimental maxillary sinusitis of rabbits].
abstract: OBJECTIVE
  To investigate how to induce experimental maxillary sinusitis so as to explore its bacteriologic changes.
  
  
  METHODS
  Forty New Zealand white rabbits were divided into six groups according to different methods to create experimental sinusitis. The purulent discharge of sinus and bacteria culture is investigated in different times.
  
  
  RESULTS
  The positive rate of bacteria culture are 0%(control group), 20%(sham-operation group), 84.6% (ostia-block group), 10%(bacteria inoculation group) and 100%(ostia-block plus bacteria inoculation group). The cultivate bacteria are mainly inoculate ones when sinusitis induced shorter than 2 weeks. If maxillary sinusitis induced more than 3 weeks, the cultivate bacteria are mainly opportunistic pathogens of rabbits.
  
  
  CONCLUSIONS
  Experimental maxillary sinusitis can be successfully induced by bacteria inoculation with an ostium closed. The cultivate rate of opportunistic bacteria is related to the process of sinusitis.
authors.affiliation: Department of Otolaryngology, Changhai Hospital, Second Military Medical University, Shanghai 200433.
authors.forename: Feng
authors.initials: F
authors.lastname: Liu
authors.forename: Shuimiao
authors.initials: S
authors.lastname: Zhou
authors.forename: Zhaoji
authors.initials: Z
authors.lastname: Li
authors.forename: Suqin
authors.initials: S
authors.lastname: Zhang
authors.forename: Yue
authors.initials: Y
authors.lastname: Xu
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D015523:Maxillary Sinusitis / Q000382:microbiology*; D009894:Opportunistic Infections / Q000382:microbiology*; D011817:Rabbits