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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Adult patients | All patients undergoing general anesthesia between January 2006 and December 2013 |
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| Measure | Description | Time Frame |
|---|---|---|
| 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 | One year |
| Measure | Description | Time Frame |
|---|---|---|
| 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 | One year |
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Inclusion Criteria:
All Patients who underwent anesthesia within the study time period.
Exclusion Criteria:
none
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All patients undergoing general anesthesia between January 2006 and December 2013. They are followed up until hospital discharge.
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| Name | Affiliation | Role |
|---|---|---|
| Claudia Spies, MD Prof. | Charite University, Berlin, Germany | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Anesthesiology and Intensive Care Medicine Campus Charité Mitte and Campus Virchow-Klinikum, Charité - University Medicine | Berlin | State of Berlin | 13353 | Germany |
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