Fig. 3.

Relative frequencies of after-hours exams performed for midgut volvulus, stratified by facility. At all campuses, after-hours upper gastrointestinal (GI) series is becoming less frequent, whereas volvulus US has become more frequently performed. However, this is most pronounced at the community hospitals where call-back is required for upper GI after-hours. *2020 includes all exams from January 1 through July 31, 2020, normalized to full year. Please note, the potential impact of the coronavirus disease 2019 (COVID-19) pandemic on these volumes is uncertain. UGI upper gastrointestinal series, US ultrasound