Mortality rates alone are no longer a sufficient guide to quality of care. Due to medical advances, patients are surviving for longer following critical illness and major surgery; therefore, functional outcomes and long-term quality of life are of increasing consequence. Post-operative cognitive dysfunction has been acknowledged as a complication following anaesthesia for many years, and interest in persistent cognitive dysfunction following a critical illness is growing. Psychological and neurocognitive sequelae following discharge from intensive care are acknowledged to occur with sufficient significance to have recently coined the term 'the post-intensive care syndrome'. Rehabilitation following critical illness has been highlighted as an important goal in recently published national UK guidelines, including the need to focus on both physical and non-physical recovery. Neuropsychological and cognitive consequences following anaesthesia and critical illness are significant. The exact pathophysiological mechanisms linking delirium, cognitive dysfunction and neuropsychological symptoms following critical illness are not fully elucidated but have been studied elsewhere and are outside the scope of this article. There is limited evidence as yet for specific peri-operative preventative strategies, but early management and rehabilitation strategies following intensive care discharge are now emerging. This article aims to summarise the issues and appraise current options for management, including both neuroprotective and neurorehabilitative strategies in intensive care.
KeywordsIntensive care, critical illness, rehabilitation, cognitive dysfunction, delirium, post-traumatic stress disorder Over the last decade, there has been an increase in the complexity of patients presenting to intensive care, due in part to the severity of co-morbidities at presentation and an increasingly elderly population. Despite this, mortality rates are improving; the long-term consequences of critical illness are thus becoming ever more relevant. The risk factors and pathogenesis of delirium and post-cognitive dysfunction have been reviewed thoroughly elsewhere. This article summarises the relevant findings in these areas and deliberately focuses on the psychological and neurocognitive sequelae following critical illness including depression, anxiety, post-traumatic stress disorder and cognitive dysfunction; reviewing the evidence for incidence, pathophysiology and management.
Psychological and neurocognitive consequences of critical illnessThe neuropsychological sequelae that occur following a critical care admission are numerous and can be highly distressing for patients and their families. Symptoms that occur include intrusive memories, delusions, delirium, panic episodes and nightmares. Conditions such as depression, anxiety, post-traumatic stress disorder (PTSD) and cognitive dysfunction are increasingly recognised among patients who survive an intensive care admission and are described collectively as the 'post-intensive care...