CI

At a glance

ClinicalIndex Comparison Record
Phase 4Active· 544 enrolled
Drug / intervention
Anticoagulation with heparin +1 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04790370
NCT04790370Phase 4Active

A Randomized Trial of Ultrasound-facilitated, Catheter-directed, Thrombolysis Versus Anticoagulation for Acute Intermediate-high Risk Pulmonary Embolism: The Higher-risk Pulmonary Embolism Thrombolysis Study

Boston Scientific Corporation·interventional·Posted Mar 10, 2021·Updated Jun 4, 2026

In Brief

A Phase 4 clinical trial evaluating Anticoagulation with heparin and EkoSonicTM Endovascular System for Pulmonary Embolism. Active but no longer recruiting, targeting 544 participants across 60 sites in 9 countries.

Detailed Summary

There are many available treatments for pulmonary embolism (PE), but the best treatment for this condition is not known. The HI-PEITHO study will compare two treatment options that are both available on the market for the treatment of PE. Patients will be randomized 1:1 to receive either blood thinners (anticoagulation) or blood thinners (anticoagulation) in combination with a device called the EkoSonicTM Endovascular device to dissolve blood clots. Patients will be followed for 12 months after randomization and have assessments while in the hospital as well as at 7 days, 30 days, 6 months and 12 months after randomization. The study will try to find out if one of these treatments is better than the other at reducing the risk of death and other serious problems.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesAustria, France, Germany, Ireland, Netherlands, Poland, Switzerland, United Kingdom, United States

Timeline

Phase 4Active
20222023202420252026
First PostedMar 10, 2021
Enrollment StartAug 2, 2021
Primary CompletionJul 31, 2025
Study CompletionAug 1, 2026
TodayJul 2, 2026
Enrollment to primary: 4.0 yearsPosted 5.3 years ago

Interventions

Anticoagulation with heparindrug

Low-molecular weight heparin (LMWH) or unfractionated heparin (UFH)

EkoSonicTM Endovascular Systemdevice

EkoSonicTM Endovascular System \[ultrasound-facilitated catheter-directed delivery of thrombolytic: 2 mg bolus/catheter + 1 mg/hour/catheter for 7 hours (total of 9 or 18 mg\]