Ultrasound-facilitated, Catheter-directed, Thrombolysis in Intermediate-high Risk Pulmonary Embolism

This study will assess whether ultrasound-facilitated, catheter-directed thrombolysis and standard anticoagulation are associated with a significant reduction in the composite outcome of pulmonary embolism (PE)-related mortality, cardiorespiratory decompensation or collapse, or nonfatal symptomatic and objectively confirmed recurrence of PE compared to anticoagulation alone within seven days of randomization The HI-PEITHO study has been designed to address the important gaps in clinical evidence by comparing the clinical benefit of the ultrasound-facilitated local delivery of a low dose thrombolytic agent and anticoagulation with those of anticoagulation alone in patients with intermediate-high risk PE at a higher estimated risk of early decompensation based on clinical parameters at presentation. This study has a focus on improving the safety of thrombolysis and advancing the concept of intermediate-high risk and the PE severity criteria, to better identify patients who may clinically benefit from thrombolysis. The results of this study will contribute further evidence to the existing data on the treatment and outcomes of acute, intermediate-high risk PE and provide controlled data related to catheter-based interventions. Data will be entered by the site into an electronic database. The database will include data checks to compare data entered into the database against predefined rules for ranges and consistency with other data fields in the database. Site monitoring will take place with source data verification to assess the accuracy and completeness of registry data by comparing the data to medical records and study assessments.