A critical review and synthesis of qualitative research on patient experiences of critical illness

Aims: To critically review the literature in order to describe the themes associated with the experience of critical illness and consider how these inform the patients understanding. Background: Critical illness requires life-saving intervention and application of high technology medicine and intensive nursing within a specialist critical care unit. Whilst an extensive and rapidly advancing knowledge of the physiological basis for treating critical illness exists, understanding how critical illness is experienced by the patient is less well understood. Data sources: Literature was retrieved through systematic searching of electronic databases, hand searches of journals and incremental searching. Review methods: 26 qualitative studies of firsthand experiences of adult patients who had been in a critical care unit were reviewed. Key, common, explicit themes between the studies were identified as well as implicit themes that emerged through preliminary synthesis. Results: Eight common explicit themes were identified. These included: Transformations of perception: Unreal experiences and dreams; Proximity to death; Transformation and perception of the body in illness; Transformation and perception of time; The critical care environment: technology and dependence; Care, communication and relationships with healthcare professionals; The support of family and friends and desire for contact; Transfer from critical care and recovery from critical illness. A further two implicit themes related to the primacy of the critical care unit within the studies; and the focus of recall or personal meaning which divided the literature. Conclusion: The explicit themes highlight the steps taken by researchers to understand what is salient about the critical care experience for those who have been critically ill. Future research exploring the whole illness-recovery trajectory and the way personal meaning contributes to understanding life experiences is justified. (C) 2013 Elsevier Ltd. All rights reserved.