Pulmonary EmbolismNCT04855370
Non-Invasive Measurement of Cardiac Output and Stroke Volume in PE
A study testing Non-invasive hemodynamic measurements in people with Pulmonary Embolism and Pulmonary Embolus/Emboli, run by University of California, Los Angeles at 1 site in United States.
Trial summary
Pulmonary embolism impacts over 1 in 1000 adults annually and is the third leading cause of cardiovascular death after heart attack and stroke. The consequence of each PE is widely variable. Physiologically, the morbidity and mortality of PE is ultimately caused by failure of the right ventricle. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pulmonary Embolism, Pulmonary Embolus/Emboli, Pulmonary Disease
- What is being tested?
- Non-invasive hemodynamic measurements
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- 15 Jul 2025to 31 Dec 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patient ≥ 18 years of age.
- The patient must understand and sign informed consent form (ICF).
- Patients requiring intensive care unit (ICU) level care with a confirmed diagnosis of pulmonary embolism (PE) by computed tomography (CT) angiogram or endobronchial ultrasound (EBUS) prior to or within 4 hours of initiation of any PE therapy or intervention.
- If a patient already has non-invasive hemodynamic monitoring by the Edwards system or by other systems, such as the Cheetah NICOM system, as part of their standard of care, this patient can still be enrolled. If the patient is already being followed by another system such as NICOM, the Edwards system would be added to it as long as the patient consents.
Who cannot join
- BMI < 20 or BMI > 35.
- Height less than 120 cm.
- Diagnosis of atrial fibrillation, moderate to severe aortic or mitral valve insufficiency or stenosis, scleroderma, or end-stage renal disease.
- Patients on extracorporeal membrane oxygenation (ECMO).
Trial locations and contacts
1 site in 1 country.
United States1 site
Ronald Reagan UCLA Medical Center
Los Angeles, California, 90095
About this study
Official title: Use of Non-invasive Measurement of Cardiac Output and Stroke Volume to Assess Risk and Response to Treatment in Patients With Pulmonary Embolism (PE)
Pulmonary embolism impacts over 1 in 1000 adults annually and is the third leading cause of cardiovascular death after heart attack and stroke. The consequence of each PE is widely variable. Physiologically, the morbidity and mortality of PE is ultimately caused by failure of the right ventricle. The acute rise in pulmonary vascular resistance caused by a PE can overwhelm the right ventricle, resulting in a drop in cardiac output and death from failure of the heart to provide vital perfusion. Despite the importance of stroke volume and cardiac output in the current understanding of PE mortality, they are notably absent from risk stratification scores because they historically could only be measured invasively.
Novel non-invasive methods of estimating stroke volume and associated cardiac output have the potential to revolutionize PE risk stratification and care. Non-invasive blood pressure (NIBP) monitors can even measure stroke volume beat to beat, allowing for continuous evaluation of cardiac function. NIBP systems are typically composed of a finger cuff with an inflatable bladder, pressure sensors, and light sensors. An arterial pulse contour is formed using the volume clamp method of blood pressure measurement combined with calibration and brachial pressure reconstruction algorithms. The stroke volume with each heart beat can be estimated as the area under the systolic portion of the blood pressure curve divided by the afterload. NIBP monitors may improve clinical care of PE because they allow for assessment of dynamic cardiac changes in real time. Detection of worsening stroke volume in acute PE could inform providers of impending cardiac collapse, and improvement of stroke volume may function as a positive prognostic factor or marker of therapeutic success. Use of NIBP monitors during acute PE to identify clinically significant changes in cardiac function may advance both PE prognostication and management.
Our clinical study proposes to monitor hemodynamic parameters including stroke volume in patients with acute pulmonary embolism using non-invasive blood pressure monitors. The relationship between hemodynamic parameters and PE outcomes will be assessed, as well as the changes in hemodynamic parameters with PE intervention. To our knowledge, interval monitoring of stroke volume during acute PE with NIBP monitors has never been reported before.
Read the detailed description
This is a single center study to evaluate the use of non-invasive measurement of stroke volume and cardiac output to assess risk and response to treatment in patients with acute pulmonary embolism (PE). A total of 40 subjects at Ronald Reagan UCLA Medical Center are anticipated to be enrolled.
After informed consent is obtained, the following procedure will be performed:
Patients requiring ICU level care with confirmed diagnosis of PE by CT angiogram or EBUS will be connected to a device that measures hemodynamics non-invasively called the Edwards ClearSight system and Edwards EV1000 clinical platform for 12 to 24 hours. The device is a finger probe worn with a supportive forearm strap. Hemodynamic measurements from the finger cuff will be recorded at intervals. After 12 hours, measurements will be taken if patient comfort and compliance allows.
Patients will be followed through their hospitalization. Standard of care data will be collected from the medical record including vital signs, cardiac monitor recordings, baseline electrocardiogram, central venous pressure (CVP) if available, ventilator settings and measurements, labs (troponin, d-dimer, lactate, pH, complete blood count, basic metabolic panel, B-type natriuretic peptide (BNP) or N-terminal-pro hormone BNP (NT-proBNP), prothrombin time and international normalized ratio (PT/INR), anti-Xa assay, and partial thromboplastin time (PTT)), imaging, interventions performed, therapies administered, discharge outcome and functional status.
As this is a study looking at the feasibility of non-invasive measurement of cardiac output and stroke volume for treating acute pulmonary embolism, study personnel performing the study procedures will not be blinded to the clinical diagnosis and the management of the subject.
- Conditions
- Pulmonary Embolism, Pulmonary Embolus/Emboli, Pulmonary Disease, Pulmonary Embolism and Thrombosis, Pulmonary Embolism Subacute Massive, Pulmonary Embolism Acute Massive
- Being tested
- Non-invasive hemodynamic measurements
- Keywords
- Pulmonary Embolism, Non-invasive Hemodynamics, Non-invasive Blood Pressure
- Medical subject headings
- Pulmonary Embolism, Embolism, Lung Diseases, Thrombosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Non-invasive hemodynamic measurementsDevice
Also called Non-invasive blood pressure (NIBP)
A patient profile will be set up in the Edwards EV1000 clinical platform by inputting the patient's demographic information. One or two Edwards ClearSight finger cuffs will be placed on the index, middle, and/or ring finger on one hand of the patient. A pressure controller will be secured by a forearm strap where the finger cuffs will be connected to the pressure controller. The pressure controller will be connected to the Edwards EV1000 clinical platform monitor. A heart reference sensor (HRS) will be connected to the pressure controller, a finger cuff, and to the patient at heart level. The Edwards EV1000 clinical platform will calibrate the finger probes, then record measurements for 10-30 seconds every 15 minutes for 12 to 24 hours. If two finger probes are available, measurements will alternate between fingers.
| Study group | Role | What they receive |
|---|---|---|
| Patients diagnosed with Pulmonary Embolism | Experimental | Patients requiring intensive care unit (ICU) level care with a confirmed diagnosis of pulmonary embolism (PE) by computed tomography (CT) angiogram or endobronchial ultrasound (EBUS) prior to or within 4 hours of initiation of any PE therapy or intervention. Receives: Device: Non-invasive hemodynamic measurements |
What is being measured
The primary outcome is the main question the study is designed to answer.
stroke volume (SV)
Stroke Volume (SV) is the volume of blood in millilitres ejected from the each ventricle due to the contraction of the heart muscle which compresses these ventricles.
Measured: 12-24 hours
stroke volume index (SVI)
Stroke Volume Index (SVI) relates SV to body surface area (BSA), thus relating heart performance to the size of the individual. The unit of measurement is millilitres per square metre (ml/m2).
Measured: 12-24 hours
cardiac output (CO)
Cardiac Output (CO) is the amount of blood the heart pumps from each ventricle per minute. It is usually expressed in litres per minute (L/min).
Measured: 12-24 hours
cardiac index (CI)
Cardiac index (CI) is the cardiac output proportional to the body surface area (BSA). The unit of measurement is litres per minute per square metre (L/min/m2).
Measured: 12-24 hours
systemic vascular resistance (SVR)
Systemic vascular resistance (SVR) refers to the resistance to blood flow offered by all of the systemic vasculature, excluding the pulmonary vasculature.
The units for SVR are most commonly expressed as pressure (mmHg) divided by cardiac output (mL/min), or mmHg⋅min⋅mL^-1
Measured: 12-24 hours
blood pressure (BP)
The pressure of the blood in the circulatory system, often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls.
Systolic Blood Pressure in mmHg Diastolic Blood Pressure in mmHg
Measured: 12-24 hours
heart rate (HR)
The number of heartbeats per unit of time, usually per minute.
Measured in beats per minute (BPM)
Measured: 12-24 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Apr 2021
- Study start15 Jul 2025 (estimated)
- Primary completion31 Dec 2025
- Study completion31 Dec 2025
Why it stopped: Study device no longer available
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for Pulmonary EmbolismStudies of the same condition, open and under way.
- More trials run by University of California, Los AngelesThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- This is a single center study to evaluate the use of non-invasive measurement of stroke volume and cardiac output to assess risk and response to treatment in patients with acute pulmonary embolism (PE). We anticipate enrolling a total of 40 subjects at Ronald Reagan UCLA Medical Center.
- Masking
- None (open label)
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, Los Angeles
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Richard N. Channick, University of California, Los Angeles
- Investigators
- Richard N Channick, M.D., Principal investigator, University of California, Los Angeles
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04855370
- Sponsor's protocol ID
- 20-002033
- Status last verified
- Mar 2026
- First submitted
- 19 Apr 2021
- Last updated
- 18 Mar 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- No
Publications
Kucher N, Rossi E, De Rosa M, Goldhaber SZ. Massive pulmonary embolism. Circulation. 2006 Jan 31;113(4):577-82. doi: 10.1161/CIRCULATIONAHA.105.592592. Epub 2006 Jan 23.
PubMed 16432055Prosperi-Porta G, Solverson K, Fine N, Humphreys CJ, Ferland A, Weatherald J. Echocardiography-Derived Stroke Volume Index Is Associated With Adverse In-Hospital Outcomes in Intermediate-Risk Acute Pulmonary Embolism: A Retrospective Cohort Study. Chest. 2020 Sep;158(3):1132-1142. doi: 10.1016/j.chest.2020.02.066. Epub 2020 Mar 31.
PubMed 32243942Weatherald J, Boucly A, Chemla D, Savale L, Peng M, Jevnikar M, Jais X, Taniguchi Y, O'Connell C, Parent F, Sattler C, Herve P, Simonneau G, Montani D, Humbert M, Adir Y, Sitbon O. Prognostic Value of Follow-Up Hemodynamic Variables After Initial Management in Pulmonary Arterial Hypertension. Circulation. 2018 Feb 13;137(7):693-704. doi: 10.1161/CIRCULATIONAHA.117.029254. Epub 2017 Oct 25.
PubMed 29070502Sangkum L, Liu GL, Yu L, Yan H, Kaye AD, Liu H. Minimally invasive or noninvasive cardiac output measurement: an update. J Anesth. 2016 Jun;30(3):461-80. doi: 10.1007/s00540-016-2154-9. Epub 2016 Mar 9.
PubMed 26961819Goldhaber SZ, Bounameaux H. Pulmonary embolism and deep vein thrombosis. Lancet. 2012 May 12;379(9828):1835-46. doi: 10.1016/S0140-6736(11)61904-1. Epub 2012 Apr 10.
PubMed 22494827Jimenez D, de Miguel-Diez J, Guijarro R, Trujillo-Santos J, Otero R, Barba R, Muriel A, Meyer G, Yusen RD, Monreal M; RIETE Investigators. Trends in the Management and Outcomes of Acute Pulmonary Embolism: Analysis From the RIETE Registry. J Am Coll Cardiol. 2016 Jan 19;67(2):162-170. doi: 10.1016/j.jacc.2015.10.060.
PubMed 26791063Jimenez D, Aujesky D, Moores L, Gomez V, Lobo JL, Uresandi F, Otero R, Monreal M, Muriel A, Yusen RD; RIETE Investigators. Simplification of the pulmonary embolism severity index for prognostication in patients with acute symptomatic pulmonary embolism. Arch Intern Med. 2010 Aug 9;170(15):1383-9. doi: 10.1001/archinternmed.2010.199.
PubMed 20696966Marti C, John G, Konstantinides S, Combescure C, Sanchez O, Lankeit M, Meyer G, Perrier A. Systemic thrombolytic therapy for acute pulmonary embolism: a systematic review and meta-analysis. Eur Heart J. 2015 Mar 7;36(10):605-14. doi: 10.1093/eurheartj/ehu218. Epub 2014 Jun 10.
PubMed 24917641
Study at a glance
From the registry record, last updated by the sponsor on 18 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Use of Non-invasive Measurement of Cardiac Output and Stroke Volume to Assess Risk and Response to Treatment in Patients With Pulmonary Embolism (PE)
- ClinicalTrials.gov ID
- NCT04855370
- Acronym / sponsor ID
- 20-002033
- Conditions
- Pulmonary Embolism, Pulmonary Embolus/Emboli, Pulmonary Disease, Pulmonary Embolism and Thrombosis, Pulmonary Embolism Subacute Massive, Pulmonary Embolism Acute Massive
- Keywords
- Pulmonary Embolism, Non-invasive Hemodynamics, Non-invasive Blood Pressure
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: Study device no longer available
- Enrolment
- 0 participants (actual)
- Lead sponsor
- University of California, Los AngelesUniversity, hospital or other
- Study start
- 15 Jul 2025 (estimated)
- Primary completion
- 31 Dec 2025 (actual)
- Study completion
- 31 Dec 2025 (actual)
- First posted
- 22 Apr 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Pulmonary embolism impacts over 1 in 1000 adults annually and is the third leading cause of cardiovascular death after heart attack and stroke. The consequence of each PE is widely variable. Physiologically, the morbidity and mortality of PE is ultimately caused by failure of the right ventricle. The acute rise in pulmonary vascular resistance caused by a PE can overwhelm the right ventricle, resulting in a drop in cardiac output and death from failure of the heart to provide vital perfusion. Despite the importance of stroke volume and cardiac output in the current understanding of PE mortality, they are notably absent from risk stratification scores because they historically could only be measured invasively.
Novel non-invasive methods of estimating stroke volume and associated cardiac output have the potential to revolutionize PE risk stratification and care. Non-invasive blood pressure (NIBP) monitors can even measure stroke volume beat to beat, allowing for continuous evaluation of cardiac function. NIBP systems are typically composed of a finger cuff with an inflatable bladder, pressure sensors, and light sensors. An arterial pulse contour is formed using the volume clamp method of blood pressure measurement combined with calibration and brachial pressure reconstruction algorithms. The stroke volume with each heart beat can be estimated as the area under the systolic portion of the blood pressure curve divided by the afterload. NIBP monitors may improve clinical care of PE because they allow for assessment of dynamic cardiac changes in real time. Detection of worsening stroke volume in acute PE could inform providers of impending cardiac collapse, and improvement of stroke volume may function as a positive prognostic factor or marker of therapeutic success. Use of NIBP monitors during acute PE to identify clinically significant changes in cardiac function may advance both PE prognostication and management.
Our clinical study proposes to monitor hemodynamic parameters including stroke volume in patients with acute pulmonary embolism using non-invasive blood pressure monitors. The relationship between hemodynamic parameters and PE outcomes will be assessed, as well as the changes in hemodynamic parameters with PE intervention. To our knowledge, interval monitoring of stroke volume during acute PE with NIBP monitors has never been reported before.
Detailed description
This is a single center study to evaluate the use of non-invasive measurement of stroke volume and cardiac output to assess risk and response to treatment in patients with acute pulmonary embolism (PE). A total of 40 subjects at Ronald Reagan UCLA Medical Center are anticipated to be enrolled.
After informed consent is obtained, the following procedure will be performed:
Patients requiring ICU level care with confirmed diagnosis of PE by CT angiogram or EBUS will be connected to a device that measures hemodynamics non-invasively called the Edwards ClearSight system and Edwards EV1000 clinical platform for 12 to 24 hours. The device is a finger probe worn with a supportive forearm strap. Hemodynamic measurements from the finger cuff will be recorded at intervals. After 12 hours, measurements will be taken if patient comfort and compliance allows.
Patients will be followed through their hospitalization. Standard of care data will be collected from the medical record including vital signs, cardiac monitor recordings, baseline electrocardiogram, central venous pressure (CVP) if available, ventilator settings and measurements, labs (troponin, d-dimer, lactate, pH, complete blood count, basic metabolic panel, B-type natriuretic peptide (BNP) or N-terminal-pro hormone BNP (NT-proBNP), prothrombin time and international normalized ratio (PT/INR), anti-Xa assay, and partial thromboplastin time (PTT)), imaging, interventions performed, therapies administered, discharge outcome and functional status.
As this is a study looking at the feasibility of non-invasive measurement of cardiac output and stroke volume for treating acute pulmonary embolism, study personnel performing the study procedures will not be blinded to the clinical diagnosis and the management of the subject.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- This is a single center study to evaluate the use of non-invasive measurement of stroke volume and cardiac output to assess risk and response to treatment in patients with acute pulmonary embolism (PE). We anticipate enrolling a total of 40 subjects at Ronald Reagan UCLA Medical Center.
| Arm | Type | Receives |
|---|---|---|
| Patients diagnosed with Pulmonary Embolism | Experimental | Device: Non-invasive hemodynamic measurementsPatients requiring intensive care unit (ICU) level care with a confirmed diagnosis of pulmonary embolism (PE) by computed tomography (CT) angiogram or endobronchial ultrasound (EBUS) prior to or within 4 hours of initiation of any PE therapy or intervention. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Patient ≥ 18 years of age.
- The patient must understand and sign informed consent form (ICF).
- Patients requiring intensive care unit (ICU) level care with a confirmed diagnosis of pulmonary embolism (PE) by computed tomography (CT) angiogram or endobronchial ultrasound (EBUS) prior to or within 4 hours of initiation of any PE therapy or intervention.
- If a patient already has non-invasive hemodynamic monitoring by the Edwards system or by other systems, such as the Cheetah NICOM system, as part of their standard of care, this patient can still be enrolled. If the patient is already being followed by another system such as NICOM, the Edwards system would be added to it as long as the patient consents.
Key exclusion criteria (4 listed)
- BMI < 20 or BMI > 35.
- Height less than 120 cm.
- Diagnosis of atrial fibrillation, moderate to severe aortic or mitral valve insufficiency or stenosis, scleroderma, or end-stage renal disease.
- Patients on extracorporeal membrane oxygenation (ECMO).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Non-invasive hemodynamic measurementsAlso: Non-invasive blood pressure (NIBP)A patient profile will be set up in the Edwards EV1000 clinical platform by inputting the patient's demographic information. One or two Edwards ClearSight finger cuffs will be placed on the index, middle, and/or ring finger on one hand of the patient. A pressure controller will be secured by a forearm strap where the finger cuffs will be connected to the pressure controller. The pressure controller will be connected to the Edwards EV1000 clinical platform monitor. A heart reference sensor (HRS) will be connected to the pressure controller, a finger cuff, and to the patient at heart level. The Edwards EV1000 clinical platform will calibrate the finger probes, then record measurements for 10-30 seconds every 15 minutes for 12 to 24 hours. If two finger probes are available, measurements will alternate between fingers. | Device | Patients diagnosed with Pulmonary Embolism |
Primary outcome
stroke volume (SV)
Time frame: 12-24 hours
Stroke Volume (SV) is the volume of blood in millilitres ejected from the each ventricle due to the contraction of the heart muscle which compresses these ventricles.
stroke volume index (SVI)
Time frame: 12-24 hours
Stroke Volume Index (SVI) relates SV to body surface area (BSA), thus relating heart performance to the size of the individual. The unit of measurement is millilitres per square metre (ml/m2).
cardiac output (CO)
Time frame: 12-24 hours
Cardiac Output (CO) is the amount of blood the heart pumps from each ventricle per minute. It is usually expressed in litres per minute (L/min).
cardiac index (CI)
Time frame: 12-24 hours
Cardiac index (CI) is the cardiac output proportional to the body surface area (BSA). The unit of measurement is litres per minute per square metre (L/min/m2).
systemic vascular resistance (SVR)
Time frame: 12-24 hours
Systemic vascular resistance (SVR) refers to the resistance to blood flow offered by all of the systemic vasculature, excluding the pulmonary vasculature. The units for SVR are most commonly expressed as pressure (mmHg) divided by cardiac output (mL/min), or mmHg⋅min⋅mL^-1
blood pressure (BP)
Time frame: 12-24 hours
The pressure of the blood in the circulatory system, often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls. Systolic Blood Pressure in mmHg Diastolic Blood Pressure in mmHg
heart rate (HR)
Time frame: 12-24 hours
The number of heartbeats per unit of time, usually per minute. Measured in beats per minute (BPM)
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Mar 2026.
- Results publication: PubMed 16432055Kucher N, Rossi E, De Rosa M, Goldhaber SZ. Massive pulmonary embolism. Circulation. 2006 Jan 31;113(4):577-82. doi: 10.1161/CIRCULATIONAHA.105.592592. Epub 2006 Jan 23.
- Results publication: PubMed 32243942Prosperi-Porta G, Solverson K, Fine N, Humphreys CJ, Ferland A, Weatherald J. Echocardiography-Derived Stroke Volume Index Is Associated With Adverse In-Hospital Outcomes in Intermediate-Risk Acute Pulmonary Embolism: A Retrospective Cohort Study. Chest. 2020 Sep;158(3):1132-1142. doi: 10.1016/j.chest.2020.02.066. Epub 2020 Mar 31.
- Results publication: PubMed 29070502Weatherald J, Boucly A, Chemla D, Savale L, Peng M, Jevnikar M, Jais X, Taniguchi Y, O'Connell C, Parent F, Sattler C, Herve P, Simonneau G, Montani D, Humbert M, Adir Y, Sitbon O. Prognostic Value of Follow-Up Hemodynamic Variables After Initial Management in Pulmonary Arterial Hypertension. Circulation. 2018 Feb 13;137(7):693-704. doi: 10.1161/CIRCULATIONAHA.117.029254. Epub 2017 Oct 25.
- Results publication: PubMed 26961819Sangkum L, Liu GL, Yu L, Yan H, Kaye AD, Liu H. Minimally invasive or noninvasive cardiac output measurement: an update. J Anesth. 2016 Jun;30(3):461-80. doi: 10.1007/s00540-016-2154-9. Epub 2016 Mar 9.
- Results publication: PubMed 22494827Goldhaber SZ, Bounameaux H. Pulmonary embolism and deep vein thrombosis. Lancet. 2012 May 12;379(9828):1835-46. doi: 10.1016/S0140-6736(11)61904-1. Epub 2012 Apr 10.
- Results publication: PubMed 26791063Jimenez D, de Miguel-Diez J, Guijarro R, Trujillo-Santos J, Otero R, Barba R, Muriel A, Meyer G, Yusen RD, Monreal M; RIETE Investigators. Trends in the Management and Outcomes of Acute Pulmonary Embolism: Analysis From the RIETE Registry. J Am Coll Cardiol. 2016 Jan 19;67(2):162-170. doi: 10.1016/j.jacc.2015.10.060.
- Results publication: PubMed 20696966Jimenez D, Aujesky D, Moores L, Gomez V, Lobo JL, Uresandi F, Otero R, Monreal M, Muriel A, Yusen RD; RIETE Investigators. Simplification of the pulmonary embolism severity index for prognostication in patients with acute symptomatic pulmonary embolism. Arch Intern Med. 2010 Aug 9;170(15):1383-9. doi: 10.1001/archinternmed.2010.199.
- Results publication: PubMed 24917641Marti C, John G, Konstantinides S, Combescure C, Sanchez O, Lankeit M, Meyer G, Perrier A. Systemic thrombolytic therapy for acute pulmonary embolism: a systematic review and meta-analysis. Eur Heart J. 2015 Mar 7;36(10):605-14. doi: 10.1093/eurheartj/ehu218. Epub 2014 Jun 10.
- Edwards ClearSight systemLink provided by the sponsor.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Richard N Channick, M.D. principal investigator
University of California, Los Angeles
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Non-invasive hemodynamic measurements in people with Pulmonary Embolism and Pulmonary Embolus/Emboli, run by University of California, Los Angeles at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 18 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
stroke volume (SV) (time frame: 12-24 hours). The study lists 7 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04855370, which also lists 8 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Mar 2026.