Background: The previously mobile child who refuses to walk or weight-bear is a common presentation to the accident and emergency department, for which there are a number of causes. One uncommon cause is discitis, an inflammatory process of the intervertebral disc, which is easily diagnosed with spinal magnetic resonance imaging (MRI). A case series of three patients is presented of non-weight-bearing children in whom there was a delay in making the diagnosis of lumbosacral discitis. None presented with back pain, spinal symptoms or abnormal neurological findings, and a full range of movement of both hips was found.

Methods: All patients underwent conventional radiography and ultrasound, but diagnoses were made on spinal MRI, with two patients undergoing bone scintigraphy before this.

Results: The mean delay was 15.6 days (range 13–20) from presentation at the hospital to MRI. All three patients made a good clinical recovery with intravenous antibiotics.

Conclusion: These cases are presented in order to heighten the awareness of this disease entity and its imaging findings, and suggest new guidelines for the appropriate radiological investigations in this clinical setting.

Background: A recent meta-analysis showed that intravenous and nebulised magnesium sulphate have similar levels of evidence to support their use in the treatment of acute asthma in adults. This consisted of weak evidence of effect on respiratory function and hospital admissions, with wide confidence intervals ranging from no effect to significant positive effects. Current BTS/SIGN guidelines suggest an equivocal role for intravenous magnesium sulphate and no role for nebulised magnesium sulphate. A study was performed to assess what emergency physicians currently do in their management of acute asthma.

Method: A postal survey was undertaken of all adult emergency departments within the UK. A structured questionnaire was sent to all clinical leads in emergency medicine about their current usage of both intravenous and nebulised magnesium sulphate in the treatment of acute asthma.

Results: 180 of the 251 emergency departments in the UK responded (72%). Magnesium sulphate was used in 93%, mostly because it was expected to relieve breathlessness (70%) or reduce HDU/ITU admissions (51%). It was predominantly given to those patients with acute severe asthma (84%) and life-threatening exacerbations (87%), with most stating they would give the drug if there was no response to repeated nebulisers (68%). In comparison, nebulised magnesium sulphate was only used in two emergency departments (1%). The main reason for not administering the drug via a nebuliser was insufficient evidence (51%).

Conclusions: Intravenous magnesium sulphate is widely used for acute asthma, usually for patients with severe or life-threatening asthma who have not responded to initial treatment. Nebulised magnesium sulphate, by contrast, is hardly used at all. The use of intravenous magnesium sulphate is more extensive than current guidelines or available evidence would appear to support.