Supplementary Oxygen in Surgical and Medical Wards Evaluated by 30-day Mortality

Supplementary Oxygen in Surgical and Medical Wards in the Capital Region of Denmark Evaluated by 30-day Mortality, a Retrospective Cohort Study

This study evaluates the use and effects of supplementary oxygen in surgical and medical wards on patients admitted to a hospital in the capital region of Denmark. The population will be divided in to three groups according to their oxygenation status. The main outcome will be 30-day mortality, with secondary outcomes being Length of stay, 30-day admission to ICU, 30-day reoperations, 30-day readmission, and peak values within 30-days of C-reactive protein, S-Creatinine, Troponin.

Inclusion Criteria:

• Admission date between 1st of January 2014 to 29th of December 2014 on a hospital in the capital region of Denmark
• Age ≥18
• Unique (first) admission in database for either:
• Hip fracture requiring surgery
• Chronic obstructive pulmonary disease in exacerbation
• Acute mycardial infarction
• Open abdominal surgery

Exclusion Criteria:

• No data on saturation within 48 hours after
• Admission (Medical patients)
• Discharge from the post anaesthesia care unit (Surgical patients)
• No data on primary outcome (30-day mortality)