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Optimum Duration of Acoustic Pulse Thrombolysis Procedure in Acute Pulmonary Embolism (OPTALYSE PE)

Primary Purpose

Pulmonary Embolism and Thrombosis

Status
Completed
Phase
Phase 4
Locations
International
Study Type
Interventional
Intervention
Ekosonic® Endovascular Device ultrasonic infusion catheter
Recombinant tissue plasminogen activator
Sponsored by
Boston Scientific Corporation
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Pulmonary Embolism and Thrombosis

Eligibility Criteria

18 Years - 75 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  1. Male or female greater than or equal to (≥) 18 years of age and less than or equal to (≤) 75 years of age.
  2. CTA evidence of proximal PE (filling defect in at least one main or lobar pulmonary artery).
  3. PE symptom duration ≤14 days.
  4. Submassive PE: RV/LV diameter ≥ 0.9 from CTA and hemodynamically stable. For Participants in UK Sites: Submassive PE: RV/LV diameter ≥ 0.9 from CTA, hemodynamically stable and an elevated biomarker.
  5. Must be treated within 48 hours of diagnosis of PE by CTA.
  6. Signed Informed consent obtained from subject or Legally Authorized Representative.

Exclusion Criteria:

  1. Stroke or transient ischemic attack (TIA), head trauma, or other active intracranial or intraspinal disease within one year.
  2. Recent (within one month) or active bleeding from a major organ.
  3. Major surgery within seven days of screening for study enrollment.
  4. Clinician deems the subject high-risk for catastrophic bleeding.
  5. History of heparin-induced thrombocytopenia (HIT).
  6. Catheter-based pharmacomechanical treatment for PE within 3 days of study enrollment.
  7. Systolic blood pressure (SBP) less than 90 mm Hg and/or use of vasopressors.
  8. Cardiac arrest (including pulseless electrical activity and asystole) requiring active cardiopulmonary resuscitation (CPR).
  9. Evidence of irreversible neurological compromise.
  10. Life expectancy < one year. For Participants in UK Sites: Life expectancy < one year or enrollment in hospice care.
  11. Use of thrombolytics or glycoprotein IIb/IIIa antagonists within 3 days prior to inclusion in the study.
  12. Out-of-Range Laboratory Values: Hematocrit < 30%, Platelets < 100 thousand/microliter (μL), International normalized ratio (INR) > 3.
  13. Creatinine outside the normal range for the treating institution.
  14. Participant is pregnant (positive pregnancy test; women of childbearing capacity must be tested) or breast feeding.
  15. Active cancer (metastatic, progressive, or treated within the last 6 months). Exception: participants with non-melanoma primary skin cancers are eligible to participate in the study.
  16. Known allergy, hypersensitivity, or thrombocytopenia from heparin, r-tPA, or iodinated contrast except for mild-moderate contrast allergies for which steroid pre-medication can be used.
  17. History of any hematologic disease potentially involving abnormal platelet number or function.

Sites / Locations

  • Cedars Sinai
  • Tallahassee Memorial Hospital
  • Florida Hospital Tampa
  • Piedmont Hospital
  • University Hospital
  • St. Vincent Medical Group
  • Jewish Hospital
  • East Jefferson General Hospital
  • Detroit Medical Center
  • Mount Carmel Health System
  • UPMC Hamot
  • Lankenau Medical Center
  • Vanderbilt University Medical Center
  • Houston Methodist Sugarland Hospital
  • Inova Alexandria Hospital
  • Providence Sacred Heart Medical Center
  • Royal Devon & Exeter Hospital
  • Medway Maritime Hospital
  • Royal Free Hospital
  • St. Thomas Hospital
  • Ninewells Hospital

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm Type

Experimental

Experimental

Experimental

Experimental

Arm Label

APT/2 Hours-r-tPA/2 mg/hr/Catheter

APT/4 Hours-r-tPA/1 mg/hr/Catheter

APT/6 Hours-r-tPA/1 mg/hr/Catheter

APT/6 Hours-r-tPA/2 mg/hr/Catheter

Arm Description

A total of 4 or 8 mg r-tPA (as 2 mg/hour [hr]/catheter) will be delivered through Ekosonic® Endovascular Device (EKOS) ultrasonic infusion catheter for 2 hrs.

A total of 4 or 8 mg r-tPA (as 1 mg/hr/catheter) will be delivered through EKOS ultrasonic infusion catheter for 4 hrs.

A total of 6 or 12 mg r-tPA (as 1 mg/hr/catheter) will be delivered through EKOS ultrasonic infusion catheter for 6 hrs.

A total of 12 or 24 mg r-tPA (as 2 mg/hr/catheter) will be delivered through EKOS ultrasonic infusion catheter for 6 hrs.

Outcomes

Primary Outcome Measures

Change From Baseline in the Right Ventricle (RV) Diameter-to-Left Ventricle (LV) Diameter Ratio to 48 ± 6 Hours After the Start of the APT Procedure
Change from baseline in RV/LV will be determined by computed tomographic angiography (CTA).
Number of Participants With Major Bleeding Within 72 Hours After Initiating the APT Procedure
Criteria for major bleeding events, as defined by the International Society on Thrombosis and Haemostasis (ISTH): 1. Fatal bleeding and/or; 2. Symptomatic bleeding in a critical area or organ (intracranial, intraspinal, intraocular, retroperitoneal, intra-articular or pericardial, or intramuscular with compartment syndrome) and/or; 3. Bleeding causing a fall in hemoglobin level of 20 grams/liter (g/L) or more, or leading to transfusion of two or more units of whole blood or red blood cells.

Secondary Outcome Measures

Percentage of Participants With Treatment Success of an APT Procedure
Treatment success of an APT procedure will be assessed by an Adjudication Committee that is blinded to the participant's treatment. The criteria for treatment success are defined as follows: A decrease in RV/LV from baseline to 48 hours after the start of the procedure of at least 0.2; and no life-threatening adverse events related to PE or its treatment through 30 days after the start of the APT procedure.
Change From Baseline in RV/LV at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph.
An echocardiogram was obtained at specified timepoints to evaluate RV/LV.
Change From Baseline in Tricuspid Annular Plane Systolic Excursion (TAPSE) at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph
The extent of displacement of the tricuspid valves, termed as TAPSE was measured at specified timepoints using echocardiogram.
Change From Baseline in Estimated Right Ventricular Systolic Pressure (RVSP) at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph
RVSP was measured at specified timepoints using echocardiogram.
Percentage of Participants With Collapse of the Inferior Vena Cava (IVC) With Respiration at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph
The collapse of IVC was measured at specified timepoints using echocardiogram.
Change From Baseline in Thrombus Burden by Miller Score as Assessed by Pulmonary Arteriogram (PAgram) at Day 0
Miller score is composed of a score for arterial obstruction (objective score) and a score for reduction of peripheral perfusion of lungs (subjective evaluation). Right pulmonary artery (PA) is assigned 9 segmental arteries (3 to the upper, 2 to the middle, and 4 to the lower lobe), and left PA is assigned only 7 segmental arteries (2 to the upper, 2 to the lingula, and 3 to the lower lobe). Presence of segmental emboli, regardless of the degree of obstruction, is scored 1 point. Proximal emboli to the segmental level are scored a value equal to the number of segmental arteries arising distally. Maximal score of obstruction=16. Reduction of peripheral perfusion is scored by dividing each lung into upper, middle, and lower zones and by using a 4-point scale: 0=normal perfusion; 1=moderately reduced perfusion; 2=severely reduced perfusion; 3=no perfusion. Maximal score of reduced perfusion=18. Thus, the maximal Miller score =34. Higher Miller score=more thrombus burden.
Change From Baseline in Thrombus Burden by Modified Miller Score as Assessed by CTA Scan at 48 ± 6 Hours After the Start of the APT Procedure
Modified miller score quantifies thrombus burden on CTA scans. Each segmental pulmonary artery (9 on the right, 7 on the left) that is fully or partly occluded by thrombus is given a score of 1. Any further proximal involves vessels score the number of segmental branches distal to that vessel, thereby giving a modified miller score of 0 (no thrombus) to 16 (thrombus in all segmental arteries or saddle embolism).
Change in 6 Minute Walk (6MW) Distance From Day 30 to Day 90 and 365
The 6 minute Walk Test is a measure of functional exercise capacity. Participants will be asked to walk as far as possible within a 6-minute period, and the distance covered at the end will be noted and recorded.
Change in Borg Scale Score Before and After 6MW Distance Test at Days 30, 90, and 365
Borg is a 10-point scale rating the maximum level of dyspnea (difficulty in breathing) and fatigue experienced before and after the 6MW distance test. Scores ranges from 0 (for no shortness of breath, or no fatigue) to 10 (for the greatest shortness of breath ever experienced, or maximum amount of fatigue felt). Higher scores indicates worse outcome.
Number of Participants Who Received Oxygen Therapy
Oxygen source is categorized as room air, nasal prongs, mask, and intubated.
Change in Participant Reported Outcomes Measurement Information System Physical Function (PROMIS-PF) 6b Score From Day 30 to Day 365
PROMIS-PF 6b questionnaire is developed by including 2-items from item-improved Health Assessment Questionnaire (HAQ) and 4-items from item-improved Physical Function-10 (PF-10) instruments. Both of these instruments assess participant's present abilities. Both "Item-Improved instruments" have 5-response options: HAQ - 1="without any difficulty," 2="with a little difficulty," 3="with some difficulty," 4="with much difficulty," 5="unable to do"; PF-10 - 1="not at all," 2="very little," 3="somewhat," 4="quite a lot," 5="cannot do." Total score is the average of all scores of component items, which ranges from 0 (no disability) to 100 (worst disability).
Change in Pulmonary Embolism Quality of Life (PEmb-QOL) Score From Day 30 to Day 365
The PEmb-QoL questionnaire contains 6 dimensions that has been created based on the contents of the items, frequency of complaints (Question [Q]1; score range: 1 [every day] to 5 [never]), activities of daily living (ADL) limitations (Q4; score range: 1 [limited a lot] to 3 [not at all]), work-related problems (Q5; response: yes/no), social limitations (Q6; score range: 1 [not at all] to 5 [extremely]), intensity of complaints (Q7 [pain in chest/shoulders]/8 [breathlessness]; score range: 1 [none] to 6 [very serious]) and emotional complaints (Q9; score range: 1 [at all times] to 6 [none of the times]). Total Score for all dimensions are calculated by the sum of the scores for each item of the dimension divided by the number of items. Total score ranges from 1 (better quality of life) to 100 (worst quality of life). Higher scores indicate poorer outcome (decreased quality of life). Questions 1, 4, 5, and 9 are reverse scored. Questions 2 and 3 provide descriptive information.
Number of Participants Who Encountered Technical Procedural Complications
Technical complications associated with the use of the EKOS device will be recorded during catheter placement in the pulmonary artery and during the infusion procedure.
Number of Participants With Symptomatic Recurrent Pulmonary Embolism (Per Adjudication)
Number of participants with symptomatic recurrent pulmonary embolism up to 365 days following the APT procedure, were reported. A summary of serious and all other non-serious adverse events regardless of causality is located in the Reported Adverse Events module.
Number of Participants Who Die Due to Any Cause
Number of participants who died due to any cause for up to 365 days following the APT procedure, were reported.
For Participants of UK Sites: Freedom From Major Harm Occurring Between Enrolment and 30 Days
Number of UK participants with freedom from major harms assessed by Safety Monitor using the following criteria: 1) Mortality - all cause and PE related; 2) Cardiovascular (CV) collapse defined as one or more of the following: a) Greater than (>) 40 millimeters of mercury (mmHg) drop in systolic blood pressure (SBP) (for >15 minutes from documented blood pressure as an in-patient) despite intravenous (IV) fluid challenge and absence of new atrial arrhythmia; b) Requirement for emergency systemic thrombolysis; c) Requirement for emergency surgical embolectomy ; d) Requirement for vasopressors; e)and/or Intubation/Ventilation; 3) Major bleeding per ISTH; 4) Recurrent PE (confirmed by imaging); and/or 5) Surgical correction of device related complication. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
For Participants of UK Sites:Change in EuroQual - 5 Dimensions - 5 Levels (EQ-5D-5L) Score From Day 30 to Day 365
The EQ-5D-5L consists of 2 parts - the descriptive system (Index Score) and the EQ Visual Analogue scale (VAS Score). The EQ-5D-5L descriptive system comprises 5 dimensions (mobility, self care, usual activities, pain/discomfort, anxiety/depression) and each dimension has 5 levels: no problems (1), slight problems (2), moderate problems (3), severe problems (4), and extreme problems (5). Each one digit number expressing the level selected for each dimension is combined into a 5-digit number describing the respondent's heath state. These 5-digit numbers are converted into an index value, where 1 represents full health and 0 is equivalent to death. The EQ VAS records the respondent's self-rated health on a vertical, visual analogue scale with 100 being the best health imaginable and 0 being the worst health imaginable. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
For Participants of UK Sites: Time From Hospital Admission to Diagnosis of PE
Duration of time between hospital admission and the diagnosis of pulmonary embolism (PE) measured in hours for UK participants.Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
For Participants of UK Sites: Time From Diagnostic Computed Tomography (CT) Scan to Initiation of Treatment for PE
Duration of time between Diagnostic Computed Tomography (CT) Scan to Initiation of Treatment for pulmonary embolism (PE) measured in hours for UK Participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
For Participants of UK Sites: Time in Each Level of Care (Level 0 and 1; Level 2; and/or Level 3) Through Discharge
Levels are defined according to National Framework Document: Level 0 - normal acute ward care (patients whose needs can be met through normal ward care in an acute hospital), Level 1 - acute ward care, with additional advice and support from the critical care team (Patients at risk of their condition deteriorating, or those recently relocated from higher levels of care, whose needs can be met on an acute ward with additional advice from a critical care team), Level 2 - more detailed observation or intervention (requiring more detailed observation or intervention including support for a single failing organ system or post-operative care and those 'stepping down' from higher levels of care) and Level 3 - advanced respiratory support alone, or basic respiratory support together with support of at least two organ systems (includes all complex patients requiring support for multi-organ failure). Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Healthcare Resource Utilization: Team Managing the Participant During Hospitalization - Number of Healthcare Professional (HCP) Specialties Involved. (UK Participants Only)
Number of Healthcare Professional (HCP) Specialists involved with care of participant during hospitalization of UK participants.Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Healthcare Resource Utilization: Number of Healthcare Professionals (HCP) Visits for Venous Thromboembolism (VTE) After Hospitalization and During 12month Follow-up. (UK Participants Only)
Number of Healthcare Professional (HCP) Specialists involved with care of participant for Venous Thromboembolism (VTE) after hospitalization through 365 days for UK participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Healthcare Resource Utilization: Number of Healthcare Professionals (HCP) Visits for Venous Thromboembolism (VTE) After Hospitalization and During 12 Month Follow-up. (UK Participants Only)
Number of Healthcare Professional (HCP) Specialists involved with care of participant for Venous Thromboembolism (VTE) after hospitalization through 365 days for UK participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Healthcare Resource Utilization: Number of Hospital Re-Admissions After Hospitalization and During 12 Month Follow-up. (UK Participants Only)
Number of Hospital Re-Admissions after hospitalization and during 12 month follow-up for UK Participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Healthcare Resource Utilization: Duration of Hospital Re-Admissions After Hospitalization and During 12 Month Follow-up. (UK Participants Only)
Duration of Hospital Re-Admissions after hospitalization and during 12 month follow-up for UK Participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.

Full Information

First Posted
March 10, 2015
Last Updated
July 15, 2021
Sponsor
Boston Scientific Corporation
Collaborators
EKOS Corporation
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1. Study Identification

Unique Protocol Identification Number
NCT02396758
Brief Title
Optimum Duration of Acoustic Pulse Thrombolysis Procedure in Acute Pulmonary Embolism
Acronym
OPTALYSE PE
Official Title
Study of the OPTtimum Duration of Acoustic Pulse ThromboLYSis ProcEdure in the Treatment of Acute Submassive Pulmonary Embolism
Study Type
Interventional

2. Study Status

Record Verification Date
July 2021
Overall Recruitment Status
Completed
Study Start Date
June 12, 2015 (Actual)
Primary Completion Date
April 30, 2019 (Actual)
Study Completion Date
January 30, 2020 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Boston Scientific Corporation
Collaborators
EKOS Corporation

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
The objective is to determine the optimum dose of thrombolytic and duration of the ultrasound procedure (together defined as the APT Procedure) as a treatment for acute submassive pulmonary embolism (PE). Symptomatic submassive PE are participants with acute (less than or equal to [≤]14 days) PE with normal systemic arterial blood pressure (greater than [>] 90 mmHg) and evidence of RV dysfunction (right ventricular to left ventricular diameter ratio, that is; RV/LV ratio greater than or equal to [≥] 0.9). Participants with submassive PE will be randomized to one of four APT treatment groups: ultrasound of 2 and 6 hours (hrs) with r-tPA 2 milligrams (mg)/hr/catheter and ultrasound 4 and 6 hours with r-tPA, 1 mg/hr/catheter. On 08 June 2016, randomization into treatment group 4 (APT/6 hours-r-tPA/2 mg/hr/catheter) was closed following a reported intracranial hemorrhage (ICH) and death in a study participant in this arm.
Detailed Description
This study is designed to investigate the lowest recombinant tissue plasminogen activator (r-tPA) dose-ultrasound treatment time required to achieve the same reductions in thrombus burden and associated improvement in physiologic parameters demonstrated in ULTIMA (EKOS 08 [NCT01166997]) and SEATTLE II (EKOS 09 [NCT01513759]). Results of this study are intended to inform the study design for further studies of the Acoustic Pulse Thrombolysis (APT) Procedure. Analysis of the first 100 evaluable participants in the United States study suggested a degree of equipoise between treatment groups 1, 2 and 3 of the protocol and therefore the sample size has been extended and additional sites in the United Kingdom (UK) National Health Service included, with a view to adding to the findings of the OPTALYSE study from sites in the UK and increasing the number of participants treated by treatment protocol.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Pulmonary Embolism and Thrombosis

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 4
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
131 (Actual)

8. Arms, Groups, and Interventions

Arm Title
APT/2 Hours-r-tPA/2 mg/hr/Catheter
Arm Type
Experimental
Arm Description
A total of 4 or 8 mg r-tPA (as 2 mg/hour [hr]/catheter) will be delivered through Ekosonic® Endovascular Device (EKOS) ultrasonic infusion catheter for 2 hrs.
Arm Title
APT/4 Hours-r-tPA/1 mg/hr/Catheter
Arm Type
Experimental
Arm Description
A total of 4 or 8 mg r-tPA (as 1 mg/hr/catheter) will be delivered through EKOS ultrasonic infusion catheter for 4 hrs.
Arm Title
APT/6 Hours-r-tPA/1 mg/hr/Catheter
Arm Type
Experimental
Arm Description
A total of 6 or 12 mg r-tPA (as 1 mg/hr/catheter) will be delivered through EKOS ultrasonic infusion catheter for 6 hrs.
Arm Title
APT/6 Hours-r-tPA/2 mg/hr/Catheter
Arm Type
Experimental
Arm Description
A total of 12 or 24 mg r-tPA (as 2 mg/hr/catheter) will be delivered through EKOS ultrasonic infusion catheter for 6 hrs.
Intervention Type
Device
Intervention Name(s)
Ekosonic® Endovascular Device ultrasonic infusion catheter
Other Intervention Name(s)
Acoustic Pulse Thrombolysis Procedure (APT Procedure), EKOS
Intervention Description
r-tPA will be administered via EKOS.
Intervention Type
Biological
Intervention Name(s)
Recombinant tissue plasminogen activator
Other Intervention Name(s)
r-tPA
Intervention Description
Recombinant tissue plasminogen activator will be administered as per the dose and schedule specified in the arm.
Primary Outcome Measure Information:
Title
Change From Baseline in the Right Ventricle (RV) Diameter-to-Left Ventricle (LV) Diameter Ratio to 48 ± 6 Hours After the Start of the APT Procedure
Description
Change from baseline in RV/LV will be determined by computed tomographic angiography (CTA).
Time Frame
Change from Baseline to 48 hrs ± 6 hours
Title
Number of Participants With Major Bleeding Within 72 Hours After Initiating the APT Procedure
Description
Criteria for major bleeding events, as defined by the International Society on Thrombosis and Haemostasis (ISTH): 1. Fatal bleeding and/or; 2. Symptomatic bleeding in a critical area or organ (intracranial, intraspinal, intraocular, retroperitoneal, intra-articular or pericardial, or intramuscular with compartment syndrome) and/or; 3. Bleeding causing a fall in hemoglobin level of 20 grams/liter (g/L) or more, or leading to transfusion of two or more units of whole blood or red blood cells.
Time Frame
Day 3 (within 72 hours after initiating the APT procedure)
Secondary Outcome Measure Information:
Title
Percentage of Participants With Treatment Success of an APT Procedure
Description
Treatment success of an APT procedure will be assessed by an Adjudication Committee that is blinded to the participant's treatment. The criteria for treatment success are defined as follows: A decrease in RV/LV from baseline to 48 hours after the start of the procedure of at least 0.2; and no life-threatening adverse events related to PE or its treatment through 30 days after the start of the APT procedure.
Time Frame
From Baseline up to Day 30
Title
Change From Baseline in RV/LV at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph.
Description
An echocardiogram was obtained at specified timepoints to evaluate RV/LV.
Time Frame
Baseline (Day -2 [within -48 hrs of APT start]), Day 0 (within 4 hours after APT end), Day 2 (48 [± 6] hrs of APT start), Day 30 (± 5 days), Day 90 (± 10 days) and Day 365 (± 14 days)
Title
Change From Baseline in Tricuspid Annular Plane Systolic Excursion (TAPSE) at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph
Description
The extent of displacement of the tricuspid valves, termed as TAPSE was measured at specified timepoints using echocardiogram.
Time Frame
Baseline (Day -2 [within -48 hrs of APT start]), Day 0 (within 4 hours after APT end), Day 2 (48 [± 6] hrs of APT start), Day 30 (± 5 days), Day 90 (± 10 days) and Day 365 (± 14 days)
Title
Change From Baseline in Estimated Right Ventricular Systolic Pressure (RVSP) at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph
Description
RVSP was measured at specified timepoints using echocardiogram.
Time Frame
Baseline (Day -2 [within -48 hrs of APT start]), Day 0 (within 4 hours after APT end), Day 2 (48 [± 6] hrs of APT start), Day 30 (± 5 days), Day 90 (± 10 days) and Day 365 (± 14 days)
Title
Percentage of Participants With Collapse of the Inferior Vena Cava (IVC) With Respiration at Days 0, 2, 30, 90, and 365, as Assessed by Echocardiograph
Description
The collapse of IVC was measured at specified timepoints using echocardiogram.
Time Frame
Baseline (Day -2 [within -48 hrs of APT start]), Day 0 (within 4 hours after APT end), Day 2 (48 [± 6] hrs of APT start), Day 30 (± 5 days), Day 90 (± 10 days) and Day 365 (± 14 days)
Title
Change From Baseline in Thrombus Burden by Miller Score as Assessed by Pulmonary Arteriogram (PAgram) at Day 0
Description
Miller score is composed of a score for arterial obstruction (objective score) and a score for reduction of peripheral perfusion of lungs (subjective evaluation). Right pulmonary artery (PA) is assigned 9 segmental arteries (3 to the upper, 2 to the middle, and 4 to the lower lobe), and left PA is assigned only 7 segmental arteries (2 to the upper, 2 to the lingula, and 3 to the lower lobe). Presence of segmental emboli, regardless of the degree of obstruction, is scored 1 point. Proximal emboli to the segmental level are scored a value equal to the number of segmental arteries arising distally. Maximal score of obstruction=16. Reduction of peripheral perfusion is scored by dividing each lung into upper, middle, and lower zones and by using a 4-point scale: 0=normal perfusion; 1=moderately reduced perfusion; 2=severely reduced perfusion; 3=no perfusion. Maximal score of reduced perfusion=18. Thus, the maximal Miller score =34. Higher Miller score=more thrombus burden.
Time Frame
Baseline, Day 0 (within 4 hours after APT end)
Title
Change From Baseline in Thrombus Burden by Modified Miller Score as Assessed by CTA Scan at 48 ± 6 Hours After the Start of the APT Procedure
Description
Modified miller score quantifies thrombus burden on CTA scans. Each segmental pulmonary artery (9 on the right, 7 on the left) that is fully or partly occluded by thrombus is given a score of 1. Any further proximal involves vessels score the number of segmental branches distal to that vessel, thereby giving a modified miller score of 0 (no thrombus) to 16 (thrombus in all segmental arteries or saddle embolism).
Time Frame
From Baseline to 48 hrs ± 6 hours
Title
Change in 6 Minute Walk (6MW) Distance From Day 30 to Day 90 and 365
Description
The 6 minute Walk Test is a measure of functional exercise capacity. Participants will be asked to walk as far as possible within a 6-minute period, and the distance covered at the end will be noted and recorded.
Time Frame
Days 30, 90, 365
Title
Change in Borg Scale Score Before and After 6MW Distance Test at Days 30, 90, and 365
Description
Borg is a 10-point scale rating the maximum level of dyspnea (difficulty in breathing) and fatigue experienced before and after the 6MW distance test. Scores ranges from 0 (for no shortness of breath, or no fatigue) to 10 (for the greatest shortness of breath ever experienced, or maximum amount of fatigue felt). Higher scores indicates worse outcome.
Time Frame
Days 30, 90, and 365
Title
Number of Participants Who Received Oxygen Therapy
Description
Oxygen source is categorized as room air, nasal prongs, mask, and intubated.
Time Frame
Days 30, 90, and 365
Title
Change in Participant Reported Outcomes Measurement Information System Physical Function (PROMIS-PF) 6b Score From Day 30 to Day 365
Description
PROMIS-PF 6b questionnaire is developed by including 2-items from item-improved Health Assessment Questionnaire (HAQ) and 4-items from item-improved Physical Function-10 (PF-10) instruments. Both of these instruments assess participant's present abilities. Both "Item-Improved instruments" have 5-response options: HAQ - 1="without any difficulty," 2="with a little difficulty," 3="with some difficulty," 4="with much difficulty," 5="unable to do"; PF-10 - 1="not at all," 2="very little," 3="somewhat," 4="quite a lot," 5="cannot do." Total score is the average of all scores of component items, which ranges from 0 (no disability) to 100 (worst disability).
Time Frame
Day 30, Day 365
Title
Change in Pulmonary Embolism Quality of Life (PEmb-QOL) Score From Day 30 to Day 365
Description
The PEmb-QoL questionnaire contains 6 dimensions that has been created based on the contents of the items, frequency of complaints (Question [Q]1; score range: 1 [every day] to 5 [never]), activities of daily living (ADL) limitations (Q4; score range: 1 [limited a lot] to 3 [not at all]), work-related problems (Q5; response: yes/no), social limitations (Q6; score range: 1 [not at all] to 5 [extremely]), intensity of complaints (Q7 [pain in chest/shoulders]/8 [breathlessness]; score range: 1 [none] to 6 [very serious]) and emotional complaints (Q9; score range: 1 [at all times] to 6 [none of the times]). Total Score for all dimensions are calculated by the sum of the scores for each item of the dimension divided by the number of items. Total score ranges from 1 (better quality of life) to 100 (worst quality of life). Higher scores indicate poorer outcome (decreased quality of life). Questions 1, 4, 5, and 9 are reverse scored. Questions 2 and 3 provide descriptive information.
Time Frame
Day 30, Day 365
Title
Number of Participants Who Encountered Technical Procedural Complications
Description
Technical complications associated with the use of the EKOS device will be recorded during catheter placement in the pulmonary artery and during the infusion procedure.
Time Frame
From device placement through Day 2
Title
Number of Participants With Symptomatic Recurrent Pulmonary Embolism (Per Adjudication)
Description
Number of participants with symptomatic recurrent pulmonary embolism up to 365 days following the APT procedure, were reported. A summary of serious and all other non-serious adverse events regardless of causality is located in the Reported Adverse Events module.
Time Frame
From Baseline up to Day 365
Title
Number of Participants Who Die Due to Any Cause
Description
Number of participants who died due to any cause for up to 365 days following the APT procedure, were reported.
Time Frame
From Baseline up to Day 365
Title
For Participants of UK Sites: Freedom From Major Harm Occurring Between Enrolment and 30 Days
Description
Number of UK participants with freedom from major harms assessed by Safety Monitor using the following criteria: 1) Mortality - all cause and PE related; 2) Cardiovascular (CV) collapse defined as one or more of the following: a) Greater than (>) 40 millimeters of mercury (mmHg) drop in systolic blood pressure (SBP) (for >15 minutes from documented blood pressure as an in-patient) despite intravenous (IV) fluid challenge and absence of new atrial arrhythmia; b) Requirement for emergency systemic thrombolysis; c) Requirement for emergency surgical embolectomy ; d) Requirement for vasopressors; e)and/or Intubation/Ventilation; 3) Major bleeding per ISTH; 4) Recurrent PE (confirmed by imaging); and/or 5) Surgical correction of device related complication. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Baseline up to Day 30
Title
For Participants of UK Sites:Change in EuroQual - 5 Dimensions - 5 Levels (EQ-5D-5L) Score From Day 30 to Day 365
Description
The EQ-5D-5L consists of 2 parts - the descriptive system (Index Score) and the EQ Visual Analogue scale (VAS Score). The EQ-5D-5L descriptive system comprises 5 dimensions (mobility, self care, usual activities, pain/discomfort, anxiety/depression) and each dimension has 5 levels: no problems (1), slight problems (2), moderate problems (3), severe problems (4), and extreme problems (5). Each one digit number expressing the level selected for each dimension is combined into a 5-digit number describing the respondent's heath state. These 5-digit numbers are converted into an index value, where 1 represents full health and 0 is equivalent to death. The EQ VAS records the respondent's self-rated health on a vertical, visual analogue scale with 100 being the best health imaginable and 0 being the worst health imaginable. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
Day 30, Day 365
Title
For Participants of UK Sites: Time From Hospital Admission to Diagnosis of PE
Description
Duration of time between hospital admission and the diagnosis of pulmonary embolism (PE) measured in hours for UK participants.Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Baseline through Day 3
Title
For Participants of UK Sites: Time From Diagnostic Computed Tomography (CT) Scan to Initiation of Treatment for PE
Description
Duration of time between Diagnostic Computed Tomography (CT) Scan to Initiation of Treatment for pulmonary embolism (PE) measured in hours for UK Participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Baseline through Day 3
Title
For Participants of UK Sites: Time in Each Level of Care (Level 0 and 1; Level 2; and/or Level 3) Through Discharge
Description
Levels are defined according to National Framework Document: Level 0 - normal acute ward care (patients whose needs can be met through normal ward care in an acute hospital), Level 1 - acute ward care, with additional advice and support from the critical care team (Patients at risk of their condition deteriorating, or those recently relocated from higher levels of care, whose needs can be met on an acute ward with additional advice from a critical care team), Level 2 - more detailed observation or intervention (requiring more detailed observation or intervention including support for a single failing organ system or post-operative care and those 'stepping down' from higher levels of care) and Level 3 - advanced respiratory support alone, or basic respiratory support together with support of at least two organ systems (includes all complex patients requiring support for multi-organ failure). Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Baseline up to Hospital Discharge
Title
Healthcare Resource Utilization: Team Managing the Participant During Hospitalization - Number of Healthcare Professional (HCP) Specialties Involved. (UK Participants Only)
Description
Number of Healthcare Professional (HCP) Specialists involved with care of participant during hospitalization of UK participants.Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Baseline up to Day 365
Title
Healthcare Resource Utilization: Number of Healthcare Professionals (HCP) Visits for Venous Thromboembolism (VTE) After Hospitalization and During 12month Follow-up. (UK Participants Only)
Description
Number of Healthcare Professional (HCP) Specialists involved with care of participant for Venous Thromboembolism (VTE) after hospitalization through 365 days for UK participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Day 30 up to Day 365
Title
Healthcare Resource Utilization: Number of Healthcare Professionals (HCP) Visits for Venous Thromboembolism (VTE) After Hospitalization and During 12 Month Follow-up. (UK Participants Only)
Description
Number of Healthcare Professional (HCP) Specialists involved with care of participant for Venous Thromboembolism (VTE) after hospitalization through 365 days for UK participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Day 30 up to Day 365
Title
Healthcare Resource Utilization: Number of Hospital Re-Admissions After Hospitalization and During 12 Month Follow-up. (UK Participants Only)
Description
Number of Hospital Re-Admissions after hospitalization and during 12 month follow-up for UK Participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Day 30 up to Day 365
Title
Healthcare Resource Utilization: Duration of Hospital Re-Admissions After Hospitalization and During 12 Month Follow-up. (UK Participants Only)
Description
Duration of Hospital Re-Admissions after hospitalization and during 12 month follow-up for UK Participants. Due to changes in the protocol, there were no subjects enrolled in the UK in Treatment Arm 4.
Time Frame
From Day 30 through Day 365

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Male or female greater than or equal to (≥) 18 years of age and less than or equal to (≤) 75 years of age. CTA evidence of proximal PE (filling defect in at least one main or lobar pulmonary artery). PE symptom duration ≤14 days. Submassive PE: RV/LV diameter ≥ 0.9 from CTA and hemodynamically stable. For Participants in UK Sites: Submassive PE: RV/LV diameter ≥ 0.9 from CTA, hemodynamically stable and an elevated biomarker. Must be treated within 48 hours of diagnosis of PE by CTA. Signed Informed consent obtained from subject or Legally Authorized Representative. Exclusion Criteria: Stroke or transient ischemic attack (TIA), head trauma, or other active intracranial or intraspinal disease within one year. Recent (within one month) or active bleeding from a major organ. Major surgery within seven days of screening for study enrollment. Clinician deems the subject high-risk for catastrophic bleeding. History of heparin-induced thrombocytopenia (HIT). Catheter-based pharmacomechanical treatment for PE within 3 days of study enrollment. Systolic blood pressure (SBP) less than 90 mm Hg and/or use of vasopressors. Cardiac arrest (including pulseless electrical activity and asystole) requiring active cardiopulmonary resuscitation (CPR). Evidence of irreversible neurological compromise. Life expectancy < one year. For Participants in UK Sites: Life expectancy < one year or enrollment in hospice care. Use of thrombolytics or glycoprotein IIb/IIIa antagonists within 3 days prior to inclusion in the study. Out-of-Range Laboratory Values: Hematocrit < 30%, Platelets < 100 thousand/microliter (μL), International normalized ratio (INR) > 3. Creatinine outside the normal range for the treating institution. Participant is pregnant (positive pregnancy test; women of childbearing capacity must be tested) or breast feeding. Active cancer (metastatic, progressive, or treated within the last 6 months). Exception: participants with non-melanoma primary skin cancers are eligible to participate in the study. Known allergy, hypersensitivity, or thrombocytopenia from heparin, r-tPA, or iodinated contrast except for mild-moderate contrast allergies for which steroid pre-medication can be used. History of any hematologic disease potentially involving abnormal platelet number or function.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Victor Tapson, MD
Organizational Affiliation
Cedar Sinai, Los Angeles
Official's Role
Principal Investigator
Facility Information:
Facility Name
Cedars Sinai
City
Beverly Hills
State/Province
California
ZIP/Postal Code
90211
Country
United States
Facility Name
Tallahassee Memorial Hospital
City
Tallahassee
State/Province
Florida
ZIP/Postal Code
32308
Country
United States
Facility Name
Florida Hospital Tampa
City
Tampa
State/Province
Florida
ZIP/Postal Code
33613
Country
United States
Facility Name
Piedmont Hospital
City
Atlanta
State/Province
Georgia
ZIP/Postal Code
30309
Country
United States
Facility Name
University Hospital
City
Augusta
State/Province
Georgia
ZIP/Postal Code
30901
Country
United States
Facility Name
St. Vincent Medical Group
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46260
Country
United States
Facility Name
Jewish Hospital
City
Louisville
State/Province
Kentucky
ZIP/Postal Code
40202
Country
United States
Facility Name
East Jefferson General Hospital
City
Metairie
State/Province
Louisiana
ZIP/Postal Code
70006
Country
United States
Facility Name
Detroit Medical Center
City
Detroit
State/Province
Michigan
ZIP/Postal Code
48201
Country
United States
Facility Name
Mount Carmel Health System
City
Columbus
State/Province
Ohio
ZIP/Postal Code
43213
Country
United States
Facility Name
UPMC Hamot
City
Erie
State/Province
Pennsylvania
ZIP/Postal Code
16507
Country
United States
Facility Name
Lankenau Medical Center
City
Wynnewood
State/Province
Pennsylvania
ZIP/Postal Code
19096
Country
United States
Facility Name
Vanderbilt University Medical Center
City
Nashville
State/Province
Tennessee
ZIP/Postal Code
37232
Country
United States
Facility Name
Houston Methodist Sugarland Hospital
City
Richmond
State/Province
Texas
ZIP/Postal Code
77469
Country
United States
Facility Name
Inova Alexandria Hospital
City
Alexandria
State/Province
Virginia
Country
United States
Facility Name
Providence Sacred Heart Medical Center
City
Spokane
State/Province
Washington
ZIP/Postal Code
99204
Country
United States
Facility Name
Royal Devon & Exeter Hospital
City
Exeter
State/Province
England
ZIP/Postal Code
EX2 5DW
Country
United Kingdom
Facility Name
Medway Maritime Hospital
City
Gillingham
State/Province
England
ZIP/Postal Code
ME7 5NY
Country
United Kingdom
Facility Name
Royal Free Hospital
City
London
State/Province
England
ZIP/Postal Code
NW3 2QG
Country
United Kingdom
Facility Name
St. Thomas Hospital
City
London
State/Province
England
ZIP/Postal Code
SE1 7EH
Country
United Kingdom
Facility Name
Ninewells Hospital
City
Dundee
State/Province
Scotland
ZIP/Postal Code
DD1 9SY
Country
United Kingdom

12. IPD Sharing Statement

Citations:
PubMed Identifier
32757658
Citation
Piazza G, Sterling KM, Tapson VF, Ouriel K, Sharp ASP, Liu PY, Goldhaber SZ. One-Year Echocardiographic, Functional, and Quality of Life Outcomes After Ultrasound-Facilitated Catheter-Based Fibrinolysis for Pulmonary Embolism. Circ Cardiovasc Interv. 2020 Aug;13(8):e009012. doi: 10.1161/CIRCINTERVENTIONS.120.009012. Epub 2020 Aug 6.
Results Reference
background
PubMed Identifier
30025734
Citation
Tapson VF, Sterling K, Jones N, Elder M, Tripathy U, Brower J, Maholic RL, Ross CB, Natarajan K, Fong P, Greenspon L, Tamaddon H, Piracha AR, Engelhardt T, Katopodis J, Marques V, Sharp ASP, Piazza G, Goldhaber SZ. A Randomized Trial of the Optimum Duration of Acoustic Pulse Thrombolysis Procedure in Acute Intermediate-Risk Pulmonary Embolism: The OPTALYSE PE Trial. JACC Cardiovasc Interv. 2018 Jul 23;11(14):1401-1410. doi: 10.1016/j.jcin.2018.04.008.
Results Reference
result

Learn more about this trial

Optimum Duration of Acoustic Pulse Thrombolysis Procedure in Acute Pulmonary Embolism

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