Role of LP in suspected SAH

The Investigation of subarachnoid haemorrhage page has had a major revision, including clearer guidance about the role (or usual lack of it) for normal risk patients who have had a negative high quality CT within 6 (and probably 12) hours.

ST elevation in aVR

The ECG in acute coronary syndromes page has had a few minor updates to re-emphasise the lack of specificity of ST elevation in aVR for proximal LAD occlusion in the absence of other typical features.