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Operating Room Air Filtration/Sterilization

Operating Room Air Filtration/Sterilization and Surgical Site Infection: A Randomized Multiple Cross-over Cluster Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04610294
Acronym
ORACLE
Enrollment
66273
Registered
2020-10-30
Start date
2021-05-01
Completion date
2026-12-01
Last updated
2026-05-06

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

Conditions

Surgery

Brief summary

Determine whether operating room air filtration and sterilization with the ActivePure system reduces a composite of serious surgical site infections, infection-related complications, and death within 30 days after surgery.

Detailed description

The investigators primary goal is thus to determine whether supplemental filtering and sterilizing operating room air reduces a composite of serious surgical site infections, infection-related complications, and death within 30 days after surgery. The primary outcome will be restricted to inpatients. However, outpatients will be simultaneously enrolled given the trial's cluster design. Sample-size is based on our primary inpatient analysis, N= 66,273 inpatients. Available outpatients will be included for analysis of our secondary outcome which includes both inpatients and outpatients.

Interventions

DEVICEFunctioning Aerus air filtration/sterilization

Two units of Aerus air sterilization system will be used in each operating room, and each will be set to "high." Units used for the trial will be modified internally to be active and will be sealed to prevent operating room personnel from opening the system and determining a unit's status.

DEVICEDeactivated Aerus air filtration/sterilization

Two units of Aerus air sterilization system will be used in each operating room, and each will be set to "high." Units used for the trial will be modified internally to be inactivated and will be sealed to prevent operating room personnel from opening the system and determining a unit's status. Units will be inactivated by removing the activated carbon, high-efficiency particulate filter, and ionization chamber. However, the fan will remain active as will the "run" lights.

Sponsors

The Cleveland Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Identical-looking test devices are either active or inactive. None of the investigators, clinicians, patients, or outcome assessors knows which are which.

Intervention model description

Randomized multiple crossover cluster trial

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* All patients in designated adult operating rooms * American Society of Anesthesiologists physical status 1-4. * Surgery lasting at least 1 hour.

Design outcomes

Primary

MeasureTime frameDescription
Serious surgical site infections and related complication in previously uninfected surgical inpatients30 days after surgeryComposite of serious surgical site infections, infection-related complications, and death in surgical inpatients without present-on-admission composite infection components

Secondary

MeasureTime frameDescription
Serious surgical site infections and related complication in previously uninfected surgical inpatients and outpatients30 days after surgeryComposite of serious surgical site infections, infection-related complications, and death in surgical inpatients and outpatients without present-on-admission composite infection components

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORDaniel I Sessler, MD

The Cleveland Clinic

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 7, 2026