s9-s12 STROKE on the day of admission than ischaemic strokes (odds ratio: 7.27, 95% CI: 6.31-8.37, p<0.001).2 However, there has been a growing interest in ICH in the stroke research community and findings from recent studies suggest that a more active approach to this patient group is now warranted. We will focus this review on evidence for key interventions in the hyperacute phase of ICH management, that is, the first 24 hours after symptom onset.
Early neurological deteriorationIn ICH, a key pathophysiological difference from ischaemic stroke is the presence within the fixed volume of the cranium of a space-occupying lesion, initially composed of the haematoma and subsequently, an increasing volume of vasogenic oedema.
4Should the reserve of space within the cranium be exhausted (Monro-Kellie doctrine), intracranial pressure will begin to rise and fatal brain herniation syndromes may then occur. Baseline haematoma volume is an important predictor of survival and functional outcomes but subsequent early complications that increase intracranial pressure can cause early neurological deterioration in up to half of patients, depending on how it is defined and study duration. 5,6 Haematoma expansion (Fig 1 ) is a principal cause of deterioration in the first 24 hours after onset, with studies indicating that up to 30% of patients demonstrate significant haematoma expansion within hours of onset, which worsens prognosis. 7 Obstructive hydrocephalus may occur with occlusion of cerebrospinal fluid flow, either by occlusion of the ventricular system by intraventricular haemorrhage or extrinsic compression, especially at the third and fourth ventricles. Finally, for larger haematomas in the subacute phase, the addition of Intracerebral haemorrhage causes 1 in 10 strokes, but has the worst overall outcomes of all stroke subtypes. Baseline haematoma volume is a key prognostic factor and early complications -such as haematoma expansion, obstructive hydrocephalus and perihaematomal oedema -may worsen outcome. There is evidence that withdrawal of care may occur more often in intracerebral haemorrhage than ischaemic stroke independent of premorbid health and stroke severity. However, recent evidence shows that reversal of anticoagulants, intensive blood pressure lowering and surgery in carefully selected cases may improve outcomes. Ongoing research may also provide evidence for new medical treatments and minimally invasive approaches to surgery. Effective implementation of evidence-based care to intracerebral haemorrhage patients can be diffi cult but quality improvement methodology can help to achieve maximal benefi t.