Quality improvement report - Linking guideline to regular feedback to increase appropriate requests for clinical tests: blood gas analysis in intensive care

Problem Need to decrease the number of requests for arterial blood gas anal ysis and increase their appropriateness to reduce the amount of blood drawn from patients, the time wasted by nurses, and the related cost. Design Assessment of the impact of a multifaceted intervention aimed at cha nging requests for arterial blood gas analysis in a before and after study. Background and setting Twenty bed surgical intensive care unit of a tertiar y university affiliated hospital, receiving 1500 patients per year. Key measures for improvement Number of tests per patient day, proportion of tests complying with current guideline, and safety indicators (mortality, incident rate, length of stay). Comparison of three 10 month periods corres ponding to baseline, pilot (first version of the guideline), and consolidat ed (second version of the guideline) periods from March 1997 to August 1999 . Strategies for change Multifaceted intervention combining a new guideline d eveloped by a multidisciplinary group, educational sessions, and monthly fe edback about adherence to the guideline and use of blood gas analysis. Effects of change Substantial decrease in the number of tests per patient d ay (from 8.2 to 4.8; P < 0.0001), associated with increased adherence to th e guideline (from 53% to 80%, P < 0.0001). No significant variation of safe ty indicators. Lessons learnt A multifaceted intervention can substantially decrease the n umber of requests for arterial blood gas analysis and increase their approp riateness without affecting patient safety.