A comparison between endoscopically middle meatal aspiration culture using modified aspiration instrument and direct maxillary antral tap culture in chronic rhinosinusitis.
OBJECTIVE
To evaluate the accuracy of endoscopically guided middle meatal aspiration culture by comparing the culture results between middle meatal aspiration using the modified aspiration instrument and direct maxillary antral tap.


METHODS
Sixteen patients with chronic rhinosinusitis underwent functional endoscopic sinus surgery (FESS) were enrolled. Both endoscopically middle meatal aspiration culture (EMAC) using modified aspiration instrument and direct antral tap culture (ATC) were performed before FESS. Microbiologic data were compared and analyzed for any statistical differences between EMAC and ATC.


RESULTS
The positive culture rates were 93.75% in both EMAC and ATC groups. Aerobic and facultative anaerobic bacteria were found in 87.5% of EMAC group and 81.25% of ATC group. The two most common bacteria in both groups were coagulase-negative Staphylococcus and Staphylococcus aureus. The association between EMAC and ATC was strong to moderate (13/16) 81.25%.


CONCLUSIONS
EMAC appears to be a valuable alternative to ATC for guiding bacterial-specific therapy in chronic rhinosinusitis. This modified aspiration instrument should be useful in clinical practice and serve as a cost effective procedure.
Kirtsreesakul
Virat
V
Division of Allergy and Rhinology, Department of Otolaryngology, Faculty of Medicine, Prince of Songkla University, Hal Yai, Songkhla, 90110, Thailand. kvirat2002@yahoo.com
Chatwiwat
Yanin
Y
Laohaprertthisan
Varaporn
V
D000293:Adolescent; D000328:Adult; D001707:Biopsy, Needle / Q000295:instrumentation* / Q000379:methods; D002908:Chronic Disease; D004724:Endoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D015523:Maxillary Sinusitis / Q000175:diagnosis* / Q000382:microbiology; D008875:Middle Aged; D009297:Nasal Mucosa / Q000382:microbiology*; D011446:Prospective Studies; D011677:Punctures / Q000295:instrumentation; D012220:Rhinitis / Q000175:diagnosis* / Q000382:microbiology; D013048:Specimen Handling / Q000379:methods*; D013396:Suction / Q000295:instrumentation