Recommendations on treatment of patients with head injury were recently proposed by the National Institute for Clinical Excellence (NICE). We tested the clinical performance of NICE variables versus the proposal of the Neurotraumatology Committee of the World Federation of Neurosurgical Societies (NCWFNS). Over a 5-year period, the clinical data of 7,955 adolescent and adult patients with mild head injury were prospectively collected and patients were managed according to the NCWFNS proposal. Outcome measures were (a) any post-traumatic lesion; (b) need for neurosurgical intervention; (c) unfavorable outcome (death, permanent vegetative state, severe disability) after 6 months. The predictive value of NICE variables was tested by logistic regression analysis. Three hundred fifty-four patients (6.8%) had intracranial lesions on computed tomography (CT) scan; neurosurgical intervention was needed in 108 patients (1.3%), and an unfavorable outcome occurred in 54 patients (0.7%) at 6-month follow-up. NICE variables were less sensitive than NCWFNS (93.5%; 95% confidence interval 91.0-95.2; vs. 97.8%; 96.1-98.7; p < 0.001), but far more specific (70.0%, 69.0-71.0, vs. 45.9%, 44.8-47.0; p < 0.001) for predicting intracranial lesions. NICE variables were also more specific (66.5%, 65.5-67.5, vs. 43.5%, 42.4-44.6; p < 0.001) in the prediction of neurosurgical intervention. 99.1% of unfavorable outcomes were predicted by both protocols. The CT order rate of NICE was much lower (34.1% vs. 57.1%; p < 0.001). In sum, the variables selected by NICE recommendations, when applied to a typical broad sample of emergency medicine, are a reliable, clinically sensible tool in predicting significant outcomes in patients with mild head injury and are resource saving.

Background: In mild head injury, predictors to select patients for computed tomography (CT) and/or to plan proper management are needed. The strength of evidence of published recommendations is insufficient for current use. We assessed the diagnostic accuracy and the clinical validity of the proposal of the Neurotraumatology Committee of the World Federation of Neurosurgical Societies on mild head injury from an emergency department perspective. Methods: In a three year period, 5578 adolescent and adult subjects were prospectively recruited and managed according to the proposed protocol. Outcome measures were: (a) any post-traumatic lesion; (b) need for neurosurgical intervention; (c) unfavourable outcome (death, permanent vegetative state or severe disability) after six months. The predictive value of a model based on five variables (Glasgow coma score, clinical findings, risk factors, neurological deficits, and skull fracture) was tested by logistic regression analysis. Findings: At first CT evaluation 327 patients (5.9%) had intracranial post-traumatic lesions. In 16 cases (0.3%) previously undiagnosed lesions were detected after re-evaluation within seven days. Neurosurgical intervention was needed in 71 patients (1.3%) and an unfavourable outcome occurred in 39 cases (0.7%). The area under the ROC curve of the variables in predicting post-traumatic lesions was 0.906 (0.009) (sensitivity 70.0%, specificity 94.1% at best cut off), neurosurgical intervention was 0.926 (0.016) (sensitivity 81.7%, specificity 94.1%), and unfavourable outcome was 0.953 (0.014) (sensitivity 88.1%, specificity 95.1%). Interpretation: The variables prove highly accurate in the prediction of clinically meaningful outcomes, when applied to a consecutive set of patients with mild head injury in the clinical setting of a 1st level emergency department.

The association between rheumatological and thyroid disorders has long been known, the most common being the association of rheumatoid arthritis and autoimmune thyroiditis. Little is known as to possible thyroid involvement in other rheumatological disease of possible autoimmune aetiology, such as psoriatic arthritis and ankylosing spondylitis. We measured thyroid volume and function as well as the prevalence of anti-microsome and anti-thyroglobulin antibodies in 107 consecutive patients with rheumatoid arthritis, 42 patients with psoriatic arthritis, and 12 male patients with ankylosing spondylitis. Fifty-two normal subjects were used as controls. The average thyroid volume, measured at ultrasounds, was increased in all groups of patients, and the prevalence of thyroid enlargement (A-P diameter > 20 mm) was 2-3 fold higher in rheumatological disorders in comparison to controls. Both, patients with rheumatoid arthritis and psoriatic arthritis had higher-than-normal fT4 levels and an increased prevalence of anti-microsome antibodies. In the rheumatoid arthritis group alterations in thyroid volume and function were present irrespective of disease activity, whereas in psoriatic arthritis thyroid involvement was confined to patients with active disease. Our data are consistent with a significant thyroid involvement in rheumatological disorders, which is not limited to diseases with a definite autoimmune aetiology.