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Depression after stroke: a review of the evidence base to inform the development of an integrated care pathway. Part 1: Diagnosis, frequency and impact

Nibras Hassan

Northwick Park and St Mark's Hospital Trust, Harrow, Middlesex, UK

Background: Depression is a common complication of stroke, leading to increased morbidity and mortality. It can impede the process of rehabilitation, and has been associated with poorer outcomes and increased length of stay in hospital. This systematic review was undertaken as a preliminary step to explore the available evidence on which to base an integrated care pathway (ICP) for the management of post-stroke depression (PSD) in a rehabilitation setting. It is divided into two parts.

Aims and objectives: In part 1 we review the frequency of depression in stroke and its impact on functional recovery. Also the different methods for diagnosis and measurement.

Methods: Data sources comprised a computer-aided search of published studies on depression in stroke and references to literature used in reviews.

Main findings: PSD is common and is associated with cognitive, functional and social deficits which potentially limit the outcome from rehabilitation. However, diversity of assessment tools and diagnostic criteria confound assimilation of the available literature. The Beck Depression Inventory (BDI), Hamilton Depression Rating Scale and Zung Self-rating Depression Scale were most commonly used and have demonstrable validity in stroke patients but tend to exclude those with aphasia. Instruments developed specifically to include aphasic patients, such as the Stroke Aphasic Depression Scale, are promising but have yet to be fully evaluated.

Conclusions: Further work is required to adapt and evaluate instruments to measure depression in the context of stroke. Development of an integrated care pathway may help to establish a more consistent approach to assessment and diagnosis of PSD.

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