WASHINGTON — Eleven-year-old Kelly K. Spencer put on her gloves, apron and face mask as she prepared to enter the hospital operating room in 2000. This wasn’t your typical take-a-child-to-work ...

But one nurse recalled an instance where he went into the operating room “ready to go” but “no team [was] available.” He also contends elective surgeries have been postponed.

The study involved operating room personnel at 60 hospitals and a Safety Attitudes Questionnaire. OR surgeons, anesthesiologists, certified registered nurse anesthetists and operating room nurses ...