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EKOS™ Endovascular System

HI-PEITHO trial

HI-PEITHO – First large-scale RCT evaluating intervention vs SOC

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“HI-PEITHO is the most rigorous trial in the PE space intended to address critical gaps in PE clinical evidence. This trial reflects Boston Scientific’s investment and commitment to providing the highest level of scientific evidence to ultimately help guide clinical practice.”  — Dr. Michael R. Jaff

 

Hear from the Principal Investigators

Partnerships

HI-PEITHO is a joint research study led by Boston Scientific, in partnership with the PERT Consortium™ and the University Medical Center of Mainz in collaboration with PEITHO International Study Network.

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Trial overview
 

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Multi-center

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Prospective

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Randomized

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Controlled

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Transatlantic

Importance

The HI-PEITHO study has been designed to address a critical gap in clinical evidence in PE by comparing the clinical benefit of intervention with EKOS vs. the current standard of care – anticoagulation. This trial is the largest and first of its kind in PE. It is designed to generate the most rigorous, highest level of data, contributing to the body of evidence for the treatment and outcomes in acute, intermediate-high risk PE. In addition, HI-PEITHO aims to advance the understanding of intermediate-high risk PE and risk stratification, to better identify patients who may clinically benefit from intervention, expanding access to care for these patients. 

Designed to reduce industry bias

HI-PEITHO is not your typical industry study.  The unique research partnership with the PERT Consortium and the University of Mainz aims to reduce industry bias.  

Unlike other clinical studies in PE, HI-PEITHO includes objective, clinically significant measures and bailout criteria (not subjective measures such as ICU time).

Summary

HI-PEITHO is a multi-center, prospective, randomized, controlled trial in the U.S. and Europe that will compare the outcomes of ultrasound-facilitated, catheter-directed, thrombolysis plus anticoagulation vs. anticoagulation alone for the treatment of acute, intermediate-high risk pulmonary embolism (PE).

Objective

EKOS™ Endovascular System + Anticoagulation vs. Anticoagulation Alone

Evaluate if treatment with EKOS is associated with a significant reduction in the acute composite outcome of the measures below compared to anticoagulation alone –​

  • PE-Related Death
  • Cardiorespiratory decompensation or collapse, and
  • Non-fatal symptomatic and objectively confirmed recurrence of PE 

Trial methodology


Patients

  • Enrollment: 544 participants​
  • Acute intermediate high-risk pulmonary embolism
  • ​RV/LV > 1.0, elevated troponin, & risk of early death/hemodynamic collapse​

Trial design

Hi-Peithos trial design chart

Trial end points & assessments
 

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Independent
review

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Long term

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Blinded outcome adjudication

End Points

7-day composite of –

  • PE-related mortality
  • PE recurrence (non-fatal symptomatic and objectively confirmed)
  • Cardiorespiratory decompensation or collapse

Cardiorespiratory decompensation or collapse, defined as at least one of the following:

  • Cardiac arrest or need for CPR​
  • Signs of shock: new onset arterial hypotension with end-organ hypoperfusion​
  • ECMO placement
  • ​Intubation or noninvasive mechanical ventilation​
  • National Early Warning Score (NEWS) of 9 or higher

Long Term Follow-Up

Additional follow-ups at 30-days, 6 months, and 1-Year 

National Early Warning Score (NEWS)

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Earlier warning

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Standardizing
assesment

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Objectifying patient experience

News chart

Reproduced from: Royal College of Physicians. National Early Warning Score (NEWS): Standardising the assessment of acute-illness severity in the NHS. Report of a working party. London: RCP, 2012

The NEWS is an early warning system score for clinical deterioration in hospitalized patients – it standardizes the assessment of acute-illness severity.

The score aims to objectify how the patient is doing at the bedside.

The NEWS is based on an aggregate scoring system based on physiological measurements – respiration rate, oxygen saturations, supplemental oxygen need, temperature, systolic blood pressure, heart rate, and level of consciousness.

Key additional assessments
 

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Functional & QOL
measures

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Two bleeding
measurements

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Health economic
assessment

  • Individual primary outcome components
  • GUSTO major (moderate and severe) bleeding within 7 days
  • International Society on Thrombosis and Haemostasis (ISTH) major bleeding
  • Ischemic or hemorrhagic stroke within 7 days and 30 days
  • All-cause mortality
  • Symptomatic PE recurrence within 30 days and 6 months
  • Change from baseline in RV dysfunction on echocardiography at 6 months
  • Chronic thromboembolic pulmonary hypertension (CTEPH) diagnosis within 12 months
  • Health economic assessments
  • Functional status and quality of life measures
  • Cardiopulmonary Exercise Testing (CPET) at select sites