Clinical trial NCT04865913: Venous Thrombosis Virtual Surveillance in COVID-19
Official title: Venous Thrombosis Virtual Surveillance in COVID-19
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Covid19
Venous Thromboembolism
Deep Vein Thrombosis
Pulmonary Embolism
Lead sponsor: Ottawa Hospital Research Institute
Sponsor class: OTHER
Collaborators: name: Canadian Institutes of Health Research (CIHR)
First posted: 2021-04-29
Enrollment: 510
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients who were admitted to hospital with COVID-19 or who contracted COVID-19 while in hospital and discharged to anywhere but an acute care hospital.

Brief summary: The overall goal of the VVIRTUOSO study is to determine the incidence of VTE including symptomatic DVT and PE after hospital discharge in patients with COVID-19 by implementing a pragmatic patient-centred prospective virtual VTE monitoring program in Canada and the United States.

Detailed description: Emerging evidence suggests that COVID-19 induces a highly prothrombotic state particularly among hospitalized patients based on abnormal coagulation parameters and high rates of venous thromboembolism (VTE). Reported rates of VTE among hospitalized ward (3%) and critically ill (17% to 69%) patients with COVID-19 suggest that the risk of VTE is substantially higher than patients with other acute medical illnesses. VTE, which includes deep vein thrombosis (DVT) and pulmonary embolism (PE), is one of the most common preventable causes of hospital-associated morbidity and mortality, and most events occur after hospital discharge. The incidence of VTE after hospitalization for COVID-19 is not currently known. However, the combination of COVID-induced hypercoagulability, ongoing recovery, reduced mobility, advanced age, and comorbidities likely confers a high risk of VTE in this setting. The overall goal of the VVIRTUOSO study is to determine the incidence of VTE including symptomatic DVT and PE after hospital discharge in patients with COVID-19 by implementing a pragmatic patient-centred prospective virtual VTE monitoring program at 12 sites in Canada and the United States. Additional objectives are to explore risk factors for VTE post-discharge, characterize the use of pharmacological measures for VTE prevention, assess patient awareness of VTE and provide VTE education.

Eligibility criteria: Inclusion Criteria:

i) adults 18 years of age or older (or their delegate) ii) admitted to hospital with COVID-19 (laboratory confirmed) or diagnosed with COVID-19 (laboratory confirmed) during hospitalization iii) discharged from acute care hospital within prior 7 days.

Exclusion Criteria:

i) unconfirmed diagnosis of COVID-19, ii) no access to a telephone, computer or tablet for virtual assessment, iii) treated with therapeutic doses of anticoagulation after hospital discharge (e.g. atrial fibrillation, mechanical heart valve, previous VTE), iv) patient (or their delegate) is unable or unwilling to provide informed consent,

Primary outcomes:
measure: VTE
timeFrame: 90 days
Secondary outcomes:
measure: Risk for VTE
timeFrame: 90 days
Other outcomes:
Locations:
city: Ottawa
country: Canada
facility: Ottawa Hospital Research Institute
state: Ontario
Study officials:
References: