Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Treatment of low-risk submassive pulmonary embolism using FlowTriever

Official title: Treatment of Low-Risk Submassive Pulmonary Embolism With FlowTriever: Efficacy and Safety

Run by Northwell Health · NCT05273762 · Data updated 2026-11-12

This study is testing if the FlowTriever device can safely treat people with low-risk submassive pulmonary embolism who are stable and have certain health markers.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment30 (estimated)
SponsorNorthwell Health
Academic / other
Locations2 sites (Mount Kisco, New York and 1 other locations)
StatusRecruiting
StartedJanuary 25, 2022
Main results expectedJuly 1, 2027
Study endsJuly 25, 2027
Registry record updatedOctober 1, 2026
Trial IDNCT05273762 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with low-risk submassive pulmonary embolism and specific clinical indicators of right ventricular strain.

Probably not a fit

Patients with active severe COVID-19 infection or those unable to receive anticoagulation will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the efficacy and safety of the FlowTriever device for treating patients with low-risk submassive pulmonary embolism who are hemodynamically stable. Participants will be selected based on specific clinical criteria, including the presence of cardiac biomarkers or evidence of right ventricular strain. The treatment involves mechanical thrombectomy performed under conscious sedation. The goal is to assess how effectively this device can alleviate the condition while ensuring patient safety.

Why it matters

Potential benefit: If successful, this treatment could provide a less invasive option for managing low-risk submassive pulmonary embolism, potentially improving patient outcomes.

How similar studies have gone: Other studies have shown promise in using mechanical thrombectomy for pulmonary embolism, suggesting potential success for this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
INCLUSION CRITERIA

I1. ≥ 18 years of age

I2. Clinical signs and symptoms of low-risk Intermediate pulmonary embolism defined per 2019 ESC Guidelines:

Only one of the following:

* Presence of either RV strain or RV dilation on CT scan or Echo TTE
* 4th generation Troponin T \> 0.01 ng/mL or 5th generation Troponin T \>14 ng/L

Troponin I \> 51.4 ng/L (Northwell reference laboratory)

I3. sPESI score 0 or \>1\*

\*Signs of RV dysfunction on Echo TTE or CTPA or elevated cardiac biomarker levels may be present, despite a calculation of sPESI 0.

I4. Echocardiogram, Computed Tomography Pulmonary Angiogram, or pulmonary angiographic evidence of proximal filing defect in at least one main, lobar, or segmental pulmonary artery with or without pulmonary infarction

I5. Hemodynamically stable

EXCLUSION CRITERIA

E1. Patients with active and severe COVID-19 infection (e.g. using ventilator, requiring hemodynamic support)

E2. Unable to anti-coagulate with heparin or alternative

E3. Known sensitivity to radiographic contrast agents that cannot be pre-treated

E4. Life expectancy \< 6 months

E5. Current participation in another study that may interfere with the patient's participation in this study.

E6. Inability to consent

E7. Patient is pregnant or plans to become pregnant within the next 6 months and/or currently breastfeeding.

E8. Subsegmental pulmonary embolism only

Where it's running

  • Lenox Hill Hospital
    New York, New York, United States
    Recruiting
  • Northern Westchester Hospital
    Mount Kisco, New York, United States
    Enrolling by invitation

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.