Are topical antibiotics necessary in the management of otitis externa?

Otitis externa is an inflammatory disorder of the skin of the outer ear canal frequently associated with bacterial or fungal infection. It is normally treated with aural toilet and topical preparations containing antibiotic/antifungal and steroid preparations. A group of 39 patients presenting with otitis externa were randomized in a double‐blind manner into those receiving drops containing an aminoglycoside and steroid preparation and those receiving the same preparation without the aminoglycoside. All patients were reviewed on days 0, 3, 7 and 11 of a 14‐day course of drops and their response to medication monitored. Patients documented their symptoms at each appointment and clinical response was also measured by a blinded observer. The study suggests that an aminoglycoside antibiotic conveys no significant benefit in this condition.     

Are topical antibiotics necessary in the management of otitis externa?

Otitis externa is an inflammatory disorder of the skin of the outer ear canal frequently associated with bacterial or fungal infection. It is normally treated with aural toilet and topical preparations containing antibiotic/antifungal and steroid preparations. A group of 39 patients presenting with otitis externa were randomized in a double-blind manner into those receiving drops containing an aminoglycoside and steroid preparation and those receiving the same preparation without the aminoglycoside. All patients were reviewed on days 0, 3, 7 and 11 of a 14-day course of drops and their response to medication monitored. Patients documented their symptoms at each appointment and clinical response was also measured by a blinded observer. The study suggests that an aminoglycoside antibiotic conveys no significant benefit in this condition.     

When should retained Paparella type I tympanostomy tubes be removed in asymptomatic children?

Objectives

Tympanostomy tubes are routinely used for the treatment of otitis media with effusion (OME). There is no definite consensus on the optimal length of the intubation period and the timing of tube removal. This study was designed to determine the appropriate time for tympanostomy tube removal in asymptomatic patients of preschool age.

Methods

A retrospective study was conducted in 336 patients (478 ears) under the age of 7 years old who underwent tympanostomy tube insertion or removal from January 2006 to September 2010 at our institution. The information gathered from chart review included patients’ age at the time of tube insertion, duration of intubation, and the presence of complications, such as tube site infection and persistent tympanic membrane perforation. Logistic regression, chi-square test and Fisher's exact test were used to determine the statistical significance of observations.

Results

The spontaneous extrusion rate of tympanostomy tubes was about 90% at 18 months and showed a plateau after 18 months. The OME recurrence rate decreased after 12 months of intubation, and complications such as tube site infection and persistent tympanic membrane perforation increased after 15 months of intubation.

Conclusion

Tympanostomy tubes removed before 12 months showed a high possibility of recurrence. Removal after 15 months showed an increased possibility of complications. Spontaneous extrusion seldom occurred after 18 months. From these findings, we concluded that asymptomatically retained tympanostomy tubes are recommended to remove when a tube is retained for more than 18 months.     

How do metallic middle ear implants behave in the MRI?

BACKGROUND: Magnetic resonance imaging (MRI) has gained in frequency and importance as a diagnostic procedure. In respect to the close anatomical relationship in the temporal bone it is necessary to know whether it is hazardous to patients with metallic middle ear implants regarding displacement and rise in temperature. For the MR image quality artefacts caused by metallic prostheses should be low. METHODS: Four different stapes prostheses made from titanium, gold, teflon/platinum and teflon/steel, a titanium total ossicular reconstruction prosthesis (TORP) and two ventilation tubes (made from titanium and gold) were tested in a 1.5 Tesla MRI machine regarding their displacement. All objects were first placed in a petri dish, then suspended from a thread and finally immersed in a dish filled with Gadolinium. Temperature changes of the implants were recorded by a pyrometer. RESULTS: None of the implants moved when they were placed in the petri dish or suspended from the thread. On the water surface the teflon/platinum and the teflon/steel pistons adjusted their direction with their axis longitudinally to the MRI scanner opening and the teflon/steel piston floated towards the MRI-machine when put close enough to the scanner opening. No rise in temperature was recorded. All implants showed as little artefacts that would still make an evaluation of the surrounding tissue possible. CONCLUSION: Patients with any of the metallic middle ear implants that were examined in this study may undergo MRI-investigations without significant adverse effects.     

How good is a chest CT scan at predicting the risk of pulmonary metastatic disease in patients with head and neck cancer? A retrospective observational study

Clin. Otolaryngol. 2010, 35 , 474–478 Objectives: Our objectives were to assess whether a CT chest, when performed as part of initial staging investigations, is a robust method to identify lung metastases or synchronous primary lung cancers in patients with head and neck squamous cell and whether small nodules are likely to represent metastases in this group of patients. Design: Retrospective observational study performed between 1994 and 2005. Setting: Head and neck cancer department, Queen Elizabeth Hospital, Birmingham. Participants: All patients that were included had a new head and neck squamous cell carcinoma and underwent a CT chest as part of their staging investigation. Main outcome measures: The presence of lung masses on the initial screening CT of the chest as determined by the radiologist’s report. The development of lung metastases or primary bronchogenic carcinoma in any patient. Results: Two hundred and thirty-nine patients met the inclusion criteria. 38 (16%) patients had a CT chest report for a lung malignancy (either metastatic or primary bronchogenic), 33 of these 38 (87%) patients actually had a lung malignancy. 32 (13%) patients had a CT chest report for a small nodule, three of these 32 (9%) patients were later diagnosed with a lung malignancy, all at a different site to the nodule. 169 (71%) patients had normal CT chest reports, of these 3 (2%) patients were later diagnosed with a lung malignancy. Conclusions: The CT chest is a useful screening tool but is not infallible. Small nodules should be taken seriously and monitored, but should not alter the initial decision as to the management of the patient.