Circadian, Weekly and Seasonal Variability of Postoperative Mortality and Morbidity (Zirkadianest)

The Association Between Circadian, Weekly, and Seasonal Effects and Time of Surgery on Postoperative Morbidity and Mortality of Patients (Zirkadianest)

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01903382

Enrollment

247506

Registered

2013-07-19

Start date

2006-01-31

Completion date

2014-06-30

Last updated

2014-11-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Postoperative Mortality and Morbidity

Brief summary

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.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Healthy volunteers

Inclusion criteria

All Patients who underwent anesthesia within the study time period.

Exclusion criteria

none

Design outcomes

Primary

Measure	Time frame	Description
Postoperative mortality	One year	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

Secondary

Measure	Time frame	Description
Hospital length of stay	One year	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

Countries

Germany

Outcome results