Tracking heart and blood vessel problems after same-day non-heart surgery
Follows adults over 45 having planned same-day surgery to track heart and vascular complications.
Plain-language title generated from the registry record
Registry title: Vascular Events In Patients Undergoing Same-day Noncardiac Surgery (VALIANCE) Study
Key facts
- Where
- Hamilton, Montreal, Sherbrooke, and Toronto, CanadaSee the 9 sites
Where in Canada
- Hamilton General HospitalHamilton, CanadaTaking people
- Juravinski Hospital and Cancer CentreHamilton, CanadaTaking people
- McMaster University Medical CentreHamilton, CanadaNo longer taking part
- St. Joseph's Healthcare HamiltonHamilton, CanadaNo longer taking part
- Centre Hospitalier de l'Universite de Montreal (CHUM)Montreal, CanadaTaking people
- Centre Hospitalier Universitaire de SherbrookeSherbrooke, CanadaNo longer taking part
- Mount Sinai HospitalToronto, CanadaTaking people
- Toronto Western HospitalToronto, CanadaTaking people
- St-Micheal's HospitalToronto, CanadaNo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Centre hospitalier de l'Université de Montréal (CHUM)
- Trial code
- NCT04973397
- Record updated
- 4 November 2026
- Original description
The proportion of noncardiac surgeries performed as same-day surgery is increasing worldwide, with more complex surgeries being performed on higher risk patients in the outpatient setting. Little is known on the risk factors, incidence and prognosis of patients undergoing same-day noncardiac surgery. The main objective of this study is to inform on the incidence and risk factors of cardiovascular and other adverse events after same-day surgery and to develop risk prediction tools to better inform on the risk and selection of patients undergoing same-day surgery.Read full original descriptionShow less
Vascular Events In Patients Undergoing Same-day Noncardiac Surgery (VALIANCE) Study - A Prospective Observational Cohort Study Evaluating Major Cardiovascular and Adverse Events in Patients Undergoing Elective Same-day Noncardiac Surgery
The proportion of noncardiac surgeries performed as same-day surgery is increasing worldwide, with more complex surgeries being performed on higher risk patients in the outpatient setting. Little is known on the risk factors, incidence and prognosis of patients undergoing same-day noncardiac surgery. The main objective of this study is to inform on the incidence and risk factors of cardiovascular and other adverse events after same-day surgery and to develop risk prediction tools to better inform on the risk and selection of patients undergoing same-day surgery.
Inclusion: 45-64 years of age with at least one risk factor, or ≥65 years of age; undergoing elective noncardiac same-day surgery; planned duration in the operating room 60 minutes or more; provided written consent.
Exclusion: previously enrolled in the VALIANCE study; intervention does not require the presence of an anesthesiologist; procedure is performed by a nonsurgical specialty (e.g., gastroenterology, pneumology, radio-oncology or radiology); intervention is an ophthalmologic procedure.