Call-shift fatigue and use of countermeasures and avoidance strategies by certified registered nurse anesthetists: a national survey.
Certified registered nurse anesthetists (CRNAs) do not have formal restrictions on their work hours. This survey found that more than half of CRNAs worked extended duration (greater than 16 hour) shifts, and nearly one-third reported committing a medical error due to fatigue.
Domen R, Connelly CD, Spence D. AANA J. 2015;83:123-131.