|Delta times calculated by the timestamps recorded|
|n° of delta times and description||Formula|
|1 Patient moving time from ward to ORB||Entrance ORB – ward exit|
|2 Waiting time in ORB reception (AR induction)||Identification by NA – entrance ORB|
|3 Waiting time in ORB reception (OR induction)||Identification by NA – entrance ORB|
|4 Waiting time for anesthesia in AR||Start anesthesia – entrance AR|
|5 Waiting time for anesthesia in OR||Start anesthesia – entrance OR|
|6 Anesthesia time||End anesthesia – start anesthesia|
|7 Sum of anesthesia time and transport to OR||Identification by NA – entrance in OR|
|8 Transport time from AR to OR||Entrance in OR – end anesthesia|
|9 Waiting time in OR||Start surgical procedure – entrance in OR|
|10 Surgical time||End surgical procedure – start surgical procedure|
|12 Total pre-surgery time||Exit OR – end surgical procedure|
|11 Awakening time||Start surgical procedure – identification by NA|
|13 Total time from admission in ORB||To surgical starting time start surgical procedure – entrance ORB|
|14 Stay time in OR||Exit OR – entrance OR|
|15 Waiting time to come back in ward||Exit OR – exit ORB|
|16 Transport time from OR to RR||Entrance RR – exit OR|
|17 Stay time in RR||Exit RR – entrance RR|
|18 Waiting time at reception||Identification by healthcare assistant – exit ORB|
|19 Transport time to come back in ward||Ward re-entry – exit ORB|
|20 Stay time in ORB||Exit ORB – entrance ORB|
|21 Out ORB - transport in ICU||Transport ICU – exit ORB|
|22 Turnover time||Entrance OR next pts – exit OR previous pts|
|23 Over-time||Scheduled end of the daily work – exit OR last case|
|24 Start time tardiness||Scheduled start of the daily work – start surgery 1°case|
|25 Under utilization||Scheduled end of the daily work – exit OR last case|
ORB: operating room block.
AR: anesthetic room.
OR: operating room.
NA: nurse anesthetist.
RR: recovery room.
ICU: intensive care unit.
Agnoletti et al.
Agnoletti et al. BMC Surgery 2013 13:7 doi:10.1186/1471-2482-13-7