Prognostic Value of Flow-mediated Dilation in Hospitalized COVID-19 Patients

  • End date
    Jun 1, 2022
  • participants needed
  • sponsor
    University of Sao Paulo General Hospital
Updated on 27 January 2021


This study will evaluate the associations between vascular parameters and clinical outcomes in patients hospitalized with COVID-19.

The vascular function and structure of individuals with COVID-19 admitted to the General Hospital of the University of Sao Paulo will be assessed in the first 72 hours of hospitalization. Then, participants will be followed up until hospital discharge/death.

Logistical regressions will be run to evaluate if vascular function/structure can predict ICU admissions, intubation, thrombosis or death.


This is a prospective cohort study conducted at the General Hospital of the University of So Paulo Medical School (HCFMUSP). Male and female participants with SARS-CoV-2 and recently admitted to the hospital ( 72 hours) will be recruited at the emergency department and outpatient clinics at the HCFMUSP. Immediately upon recruitment, participants will perform the assessment of flow mediated dilation of the brachial artery and the assessment of carotid intima-media thickness. Subsequently, they will be followed during the entire period of hospitalization.

The present study will employ as primary endpoint a composite of ICU admission, intubation or mortality during the period of hospitalization. Cardiovascular complications, such as arterial (AE), deep venous (DVP) or pulmonary embolism (PE) , acute myocardial infarction (AMI), stroke, cardiac arrest, atrial fibrillation and acute kidney injury will be considered secondary endpoints.

The association between the vascular parameters and clinical outcomes will be examined by a multivariate logistic regression.

Condition Severe Acute Respiratory Syndrome, COVID19
Clinical Study IdentifierNCT04714125
SponsorUniversity of Sao Paulo General Hospital
Last Modified on27 January 2021


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Inclusion Criteria

Is your age greater than or equal to 18 yrs?
Gender: Male or Female
Do you have any of these conditions: COVID19 or Severe Acute Respiratory Syndrome?
Patients diagnosed with SARS-CoV-2
Recently admitted to the hospital ( 72 hours)
Not yet proceeded to ICU care

Exclusion Criteria

Patients transferred from other hospitals
Participants in delirium state
Participants with a recent history of endotracheal intubation
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