Effect Of The Bacteria Of Upper Respiratory Tract On Adenoid Hypertrophy In Child

Objective To determine effect of the bacteria of upper respiratory tract on adenoid hypertrophy in child.Methods Selected193patients who were undergo adenoidectomy or tonsillectomy in our hospital from Dec.2010to Aug.2011, of which149had adenoid hypertrophy,44had tonsil hypertrophy. After general anesthesia, nasopharyngeal swabs were taken from the external wall of the nasal cavity, the nasopharynx and the oropharynx sterilely, without touching the surroundings. Specimen collection was put in a comfortable temperature, then were immediately transported to the microbiology laboratory under sterile conditions, Put the specimens onto culture media was never in excess of30min. According to "the national clinical inspection operating rules", identified the species of bacteria with automatic identification ATB Expression identification system.Results1With Fisher exact, the relevance ratio between the adenoid hypertrophy group and the control group:nasal cavity, H=5.129P=0.659, nasopharynx H=8.472P=0.564, oropharynx H=11.018P=0.202were insignificance, but there were absence on the bacteria species for each group. The normal flora for every part of the two groups were similar, mainly streptococcus viridans, Neisseria sicca, coagulase negative staphylococcus, and the pathogenic bacteria mainly were staphylococcus aureus, streptococcus pneumonia.2Compared with the bacteria relevance ratio in winter and spring with that in summer and autumn with Fisher exact, it was different (P<0.05).3Compared with the relevance ratio of nasal cavity, nasopharynx, oropharynx of the secretory otitis media patient and without, there were no difference (P>0.05).Conclusion Bacterial interference mechanisms may play an important role in pathogenesis of adenoid hypertrophy, for the bacteria species of the upper respiratory tract was signed difference between the adenoid hypertrophy group and the control group, but the bacteria relevance ratio in each part was similar. The relevance ratio was not different in different seasons. The relevance ratio of the denoid hypertrophy with secretory otitis media or not was signed no difference.