Mortality is subject to cyclic variability: circadian, weekly, and seasonal. This has been shown for different populations, different diseases and in different countries, but not for surgical patients. Aim of this study is therefore to investigate the association between circadian, weekly, and seasonal effects time of surgery postoperative mortality of patients undergoing surgery and general anesthesia.
Study Type
OBSERVATIONAL
Enrollment
247,506
Department of Anesthesiology and Intensive Care Medicine Campus Charité Mitte and Campus Virchow-Klinikum, Charité - University Medicine
Berlin, State of Berlin, Germany
Postoperative mortality
The primary objective of this study is to show associations between postoperative mortality and circadian, weekly and seasonal rhythms. Electronic patient charts are revised for complete hospital length of stay for time of surgery, co-morbidities, intra-operative data and all-cause in-hospital mortality
Time frame: One year
Hospital length of stay
The secondary objective of this is to show associations between hospital length of stay and circadian, weekly and seasonal rhythms. Electronic patient charts are revised for complete hospital length of stay for time of surgery, co-morbidities, intra-operative data and hospital length of stay
Time frame: One year
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