In order to assess the strength of the ‘evidence base’ for the practice of otolaryngology a review of recent journal articles was undertaken. A review of all articles published during the period 1990–1994 in five major general otolaryngology journals was performed. The articles were classified according to a standardized scheme from the abstract or, if necessary, the full paper. Papers were grouped into observational studies (descriptive or analytical, hypothesis‐testing), controlled trials, randomized controlled trials, audits, non‐clinical and others. One true meta‐analysis was found.1 Randomized controlled trials comprised 0.7%–4% of articles across the journals studied; other controlled trials comprised 0.8–2%; and other analytical studies 7.6–21.9%. Very few true audits were seen. Descriptive studies were by far the commonest type of paper seen. This literature review suggests there is a poor evidence base for our specialty if one regards randomized controlled trials as the gold standard.
The incidence of sudden infant death syndrome (SIDS) has declined in response to campaigns discouraging the prone sleeping position. Recent work suggests some SIDS death may be in response to bacterial toxins produced in the upper airway. A minimal temperature of 37 degrees C is required for induction of the pyrogenic toxins of Staphylococcus aureus identified in many SIDS infants. This aim of this study was to test the hypothesis that the prone position raises the temperature of the upper airways in children. A pilot study of 10 children (aged 3-8) and a main study of 30 children were carried out. Nasal septal temperatures were measured with an infra-red thermometer with the subjects in upright and prone positions under controlled conditions of ambient temperature and humidity. In both the pilot study and main study, nasal temperatures in the prone position were significantly higher (P < 0.01) Five subjects' prone readings were 37 degrees C or higher. These findings suggest that lying prone raises the upper airway surface temperature towards that required for toxin production. This could be one means by which the prone sleeping position contributes to the risk of SIDS.
In 1996 the CONSORT statement made recommendations on the strict reporting of randomized controlled trials (RCT). This will facilitate the future assessment of such trials and will highlight those trials that have been performed suboptimally and whose results may be biased.We have devised a scoring system, based on CONSORT, to assess RCT quality and by reading each original paper in full we have now assessed the quality of trials published from 1966 to 1995.The mean score for trials identified was 7.3 out of a maximum 12 points. No one journal was significantly better than the others. Trials in rhinology are reported better than head and neck oncology trials (mean scores 7.6 and 6.5 respectively). The past 30 years has not seen an improvement in the quality of the trials.The reporting of RCTs in the ENT literature is poor. CONSORT guidelines now exist and trialists are encouraged to adopt them when conducting future clinical trials.
There is a growth in the demand for clinical practice to be evidence based. Recent years have seen a rise in the number of randomized controlled clinical trials (RCTS). Such trials while acknowledged as the gold standard for evidence can be difficult to perform in surgical specialities. We have recently identified a low proportion of RCTS in the otolaryngology literature. Our aim was to identify any trend in the number of published RCTS within the ENT literature over a 30-year period and to identify which areas of our speciality lend themselves to this form of study design. A Medline search of 10 prominent journals published between 1966 and 1995 was performed. Two hundred and ninety-six RCTS were identified. Only five were published before 1980. Two hundred (71 per cent) of RCTS were in the areas of otology and rhinology. An encouraging trend is seen in RCTS within ENT literature.
Malignant otitis externa associated with skull base osteomyelitis is a condition seen classically in the elderly, diabetic patient. This disease is difficult to manage, often requiring long-term antibiotic therapy. Here we present such a case, seen in a 74- year-old lady. Initially, she was treated for a number of years in the outpatient department with intermittent ear complaints, but eventually required a hospital admission that lasted for 6 months due to a severe malignant otitis externa complicated by skull base osteomyelitis. We will discuss the clinical features, diagnostic criteria, imaging and management of this life-threatening clinical entity.
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