Antibiotic sensitivity and resistance of bacteria from odontogenic maxillofacial abscesses

OBJECTIVES: This study investigated the types and antibiotic sensitivity of bacteria in odontogenic abscesses.MATERIALS AND METHODS: Pus specimens from 1,772 patients were collected from affected areas during incision and drainage, and bacterial cultures and antibiotic sensitivity tests were performed. The number of antibiotic-resistant bacteria was analyzed relative to the total number of bacteria that were tested for antibiotic susceptibility.RESULTS: Bacterial cultures from 1,772 patients showed a total of 2,489 bacterial species, 2,101 gram-positive and 388 gram-negative. For penicillin G susceptibility tests, 2 out of 31 Staphylococcus aureus strains tested showed sensitivity and 29 showed resistance. For ampicillin susceptibility tests, all 11 S. aureus strains tested showed resistance. In ampicillin susceptibility tests, 46 out of 50 Klebsiella pneumoniae subsp. pneumoniae strains tested showed resistance.CONCLUSION: When treating odontogenic maxillofacial abscesses, it is appropriate to use antibiotics other than penicillin G and ampicillin as the first-line treatment.

The use of ultrasonography in diagnosis and management of superficial fascial space infections.

Aims and Objectives: To evaluate the role of ultrasonography as a diagnostic aid to differentiate cellulitis from abscess; and efficacy of ultrasound-guided surgical drainage of superficial abscesses in the maxillofacial region. Materials and Methods: a total of 26 patients with acute facial swellings were included in the study. Clinical examination confirmed the presence of space infection. Ultrasonographic examination of the swelling was then performed. If ultrasound images showed no collection and only thickness of subcutaneous tissue and muscle involved were increased, then the diagnosis was made as cellulitis. When collection was identified, diagnosis was made as abscess. Dimensions of abscess cavity, amount of pus collected, and depth of the center of the abscess cavity from the skin surface were recorded. Pus evacuation was then prime consideration either by needle aspiration or by incision and drainage. The amount of collection recorded on ultrasonography was compared with that drained at the time of surgery. Results: of 26 patients, 14 patients were diagnosed with cellulitis and the remaining 12 patients with abscesses in the maxillofacial region. Five of 12 cases of abscess were managed with ultrasound-guided needle aspiration; rest seven cases underwent the incision and drainage procedure. Clinical specificity (69.23%) was found to be poorer than ultrasound specificity (100 %), both clinical and ultrasound showed the same percentage of sensitivity (92.30%) Conclusions: from our experience we can conclude that ultrasonography is an inexpensive and non-invasive diagnostic technique that should be used to supplement clinical examination in patients with superficial fascial space infection.

Clinical analysis of diagnosis and treatment of serious pyogenic infection in deep neck / 中国基层医药

Objective To explore the clinical features,diagnosis and treatment of serious pyogenic infection in deep neck.Methods The retrospective analysis was taken on clinical data of 49 cases.They were all with the deep neck space infections.Among them,19 cases were revealed with diabetes,and only 7cases had the treatment history of diabetes before.Results After systemic anti-inflammatory and local symptomatic treatment,the mean course of treatment in patients without diabetes was 10.1 days,and in patients with diabetes was 18.1 days.Conclusion For diabetic patients with more severe neck space infection,in the control of blood glucose under the premise of local treatments and systemic therapy were equally important.