Summary
This study from Allan et al. investigates whether nurses working for a national medical telephone helpline show evidence of “decision fatigue,” as measured by a shift from effortful to easier and more conservative decisions as the time since their last rest break increases.
The study found that for every consecutive call taken since last rest break, the odds of nurses making a conservative management decision (i.e., arranging for callers to see another health professional the same day) increased by 5.5% from immediately after 1 break to immediately before the next. Decision-making was not significantly related to general or cumulative workload (calls or time elapsed since start of shift). The authors concluded that every consecutive decision that nurses make since their last break produces a predictable shift toward more conservative, and less resource-efficient, decisions. Theoretical models of cognitive fatigue can elucidate how and why this shift occurs, helping to identify potentially modifiable determinants of patient care.
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