Gram Staining for the Treatment of Peritonsillar Abscess. (20th February 2012)

• Record Type: Journal Article
• Authors: Takenaka, Yukinori; Takeda, Kazuya; Yoshii, Tadashi; Hashimoto, Michiko; Inohara, Hidenori
• Other Names: Rybak Leonard P. Academic Editor.
• Is Part Of: International journal of otolaryngology. Volume 2012(2012)
• Publication Date: 2012-02-20
• Subjects: Otolaryngology -- Periodicals; Otorhinolaryngologic Diseases; Otolaryngology; Electronic journals; Periodicals; Periodicals; 617.51
• DOI: 10.1155/2012/464973
• Languages: English
• ISSNs: 1687-9201

Abstract

Abstract : Objective . To examine whether Gram staining can influence the choice of antibiotic for the treatment of peritonsillar abscess. Methods . Between 2005 and 2009, a total of 57 cases of peritonsillar abscess were analyzed with regard to cultured bacteria and Gram staining. Results . Only aerobes were cultured in 16% of cases, and only anaerobes were cultured in 51% of cases. Mixed growth of aerobes and anaerobes was observed in 21% of cases. The cultured bacteria were mainly aerobic Streptococcus, anaerobic Gram-positive cocci, and anaerobic Gram-negative rods. Phagocytosis of bacteria on Gram staining was observed in 9 cases. The bacteria cultured from these cases were aerobic Streptococcus, anaerobic Gram-positive cocci, and anaerobic Gram-negative rods. The sensitivity of Gram staining for the Gram-positive cocci and Gram-negative rods was 90% and 64%, respectively. The specificity of Gram staining for the Gram-positive cocci and Gram-negative rods was 62% and 76%, respectively. Most of the Gram-positive cocci were sensitive to penicillin, but some of anaerobic Gram-negative rods were resistant to penicillin. Conclusion . When Gram staining shows only Gram-positive cocci, penicillin is the treatment of choice. In other cases, antibiotics effective for the penicillin-resistant organisms should be used.