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

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03625700

Acronym

SOSAM

Enrollment

11196

Registered

2018-08-10

Start date

2014-01-01

Completion date

2020-12-31

Last updated

2021-01-12

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

Conditions

Oxygen Deficiency, Oxygen Toxicity

Brief summary

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.

Interventions

DRUGOxygen gas

Supplementary oxygen supplied via nasal catheter or oxygen mask during hospital admission.

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

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)

Design outcomes

Primary

Measure	Time frame	Description
30- day mortality	30 days	Will be reported as a fraction of positives within the exposure group population

Secondary

Measure	Time frame	Description
Length of stay	30 days	Length of hospital stay in days
Organ markers in blood samples	30 days	Highest value of C-reactive protein, Troponin and Creatinine within 30 days.
30- day admission to ICU	30 days	Will be reported as a fraction of positives within the exposure group population.
30- day readmission	30 days	will be reported as a fraction of positives within the exposure group population.

Countries

Denmark

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026