Improving recognition of early clinical decline: Determining reliability and validity of the Garvey clinical warning curves.

Background: New graduate nurses have difficulty recognizing and managing the early signs of clinical decline, resulting in a Failure to Rescue (FTR) event and preventable patient death. To address this gap, Garvey developed a series of Clinical Warning Curves as an instructional tool for new graduate nurses in an academic medical center. The Garvey Clinical Warning Curve models depict the progression of clinical changes in six body systems that occur before cardiac arrest.

Aims: The purpose of this study was to establish the content validity, reliability, and usability of the Garvey Clinical Warning Curves among healthcare experts and new-graduate nurses.

Methods: The current study was a cross-sectional, observational, validation survey design. Content experts used the content validity index (CVI) to evaluate the Curves.

Results: All but the temperature curves were rated as "acceptable" (CVI >0.60) for relevance, clarity, and ambiguity. The new graduate nurses who reviewed the case studies and placed patients onto the Clinical Warning Curves did so similarly, generating high intraclass correlation (ICC) scores. The usability survey components measured the perceptions of acceptability, appropriateness, and feasibility for the use of the six Clinical Warning Curves in practice settings. All components of the Curves had an average score of 4.0 or greater except for the level of complexity which scored 3.88.

Linking evidence to action: The Garvey Clinical Warning Curves emerged as valid and reliable tools that aid new graduate nurses in recognizing subtle signs of clinical decline. Because timely recognition and communication of clinical decline are key to preventing FTR events and avoiding patient deaths, it would be beneficial to provide the Clinical Warning Curves as a bedside resource for new graduate nurses during their orientation to the unit or within a nurse residency program.