Strengthening implementation success using large-scale consensus decision-making - A new approach to creating medical practice guidelines.

•Popular decision-making and implementation science theories can be successfully applied to develop medical practice guidelines.•Large-scale collaborative process (2000 nurses) produced evidence-informed best practice guidelines.•Collaboratively developed medical practice guidelines led to accelerated implementation and improved patient outcomes.•A short timeframe was critical to maintain momentum, engagement and wide-scale acceptance.