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Aim.  This article describes a new conceptual framework for acute care nurse practitioner role enactment, boundary work and perceptions of team effectiveness.

Background.  Acute care nurse practitioners contribute positively to patient care by enacting an expanded scope of practise. Researchers have found both positive and negative reactions to the introduction of acute care nurse practitioners in healthcare teams. The process of role enactment, shifting role boundaries, and perceptions of team effectiveness has been studied disparately. A framework linking team structures and processes to desirable outcomes is needed.

Data sources.  Literature was obtained by searching CINAHL, PsycInfo, MedLine, PubMed, British Nursing Index, Cochrane Library, JSTOR Archive, Web of Science, and Google Scholar from 1985–2010. A descriptive multiple‐case study was completed from March 2009–May 2009 …