from Medical topics
Published online by Cambridge University Press: 18 December 2014
Overview
A critical illness is a major life event for patients and their relatives and happens within the confines of an intensive care unit (ICU). The ICU is where you will find some of the sickest patients in the hospital, with very intensive medical and nursing interventions and monitoring being undertaken around the clock. In the UK each patient has a dedicated nurse looking after them as they may require support for different failed organs, such as artificial ventilation, dialysis or drugs to raise their blood pressure.
The psychological impact of a critical illness is now recognized to go well beyond the confines of the ICU. The patients admitted to an ICU vary in age, illness type and severity and this differs considerably between hospitals depending on the population they serve. Patients undergoing major surgery who know before they go to theatre that they will be admitted to ICU afterwards may experience a strong sense of security because they have been prepared for their admission beforehand (Shi et al., 2003). However, for the many patients who develop an illness needing an admission to ICU as an emergency such preparation is simply not possible. The reasons for admission to ICU may vary greatly, from a major car crash to severe pneumonia. However the majority of these patients will be so ill that they will need a ventilator to do their breathing for them for varying periods of time, from hours to months.
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