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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03243942
Other study ID # 15SDG25740015
Secondary ID
Status Completed
Phase Phase 2
First received
Last updated
Start date June 1, 2017
Est. completion date June 26, 2019

Study information

Verified date July 2019
Source Thomas Jefferson University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The fundamental hypothesis of this project is that real-time intracardiac pressures can be monitored and quantified noninvasively in humans using a novel contrast-enhanced ultrasound technique called subharmonic-aided pressure estimation (SHAPE).This study will use contrast echocardiography to assess the accuracy of SHAPE compared to simultaneously acquired intracardiac pressures measured invasively during cardiac catheterization. This study is designed to verify that contrast echocardiography using the SHAPE method, already proven in a canine model and tested in a human pilot study can be used as a surrogate for cardiac catheterization with sufficient accuracy to allow clinical applicability in humans.


Recruitment information / eligibility

Status Completed
Enrollment 56
Est. completion date June 26, 2019
Est. primary completion date June 26, 2019
Accepts healthy volunteers No
Gender All
Age group 21 Years and older
Eligibility Inclusion Criteria:

- Be scheduled for a cardiac catheterization procedure

- Adult patients over the age of 21

- Acceptable baseline echocardiographic images in the supine position

- If a female of child-bearing potential, must have a negative pregnancy test

- Provide written informed consent

Exclusion Criteria:

- Clinically unstable patients, e.g., those who are clinically in decompensated heart failure or having active chest pain or presenting for admission with an unstable anginal syndrome

- Patients in whom introduction of a catheter into the left ventricle is contraindicated or would potentially be dangerous, e.g., patients with active ventricular arrhythmias or with significant aortic valve stenosis where crossing the aortic valve may be difficult and not clinically necessary

- Patients with anatomic right-to-left, bi-directional, or transient right-to-left cardiac shunts where Definity could traverse as a bolus

- Patients with known hypersensitivity to Definity

- Females who are pregnant or nursing

Study Design


Intervention

Drug:
Definity
Whenever a patient undergoes cardiac catheterization, which routinely includes intracardiac pressure monitoring using a pressure catheter, as part of their standard clinical care and agrees to participate in the study, we will acquire research data. With Definity infusion, SHAPE algorithm will be initiated to determine optimum acoustic pressure. Then, at the optimum acoustic pressure SHAPE specific data will be acquired from the cardiac chambers and aorta synchronously with the pressures recorded by the catheter (as a part of the patient's standard of care). After acquiring the ultrasound imaging data, the remainder of the heart catheterization will be completed by the attending cardiologist according to the patients' standard of care.

Locations

Country Name City State
United States Thomas Jefferson University and Thomas Jefferson University Hospital Philadelphia Pennsylvania

Sponsors (3)

Lead Sponsor Collaborator
Thomas Jefferson University American Heart Association, Lantheus Medical Imaging

Country where clinical trial is conducted

United States, 

References & Publications (10)

Dave JK, Halldorsdottir VG, Eisenbrey JR, Forsberg F. Processing of subharmonic signals from ultrasound contrast agents to determine ambient pressures. Ultrason Imaging. 2012 Apr;34(2):81-92. — View Citation

Dave JK, Halldorsdottir VG, Eisenbrey JR, Liu JB, McDonald ME, Dickie K, Leung C, Forsberg F. Noninvasive estimation of dynamic pressures in vitro and in vivo using the subharmonic response from microbubbles. IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Oct;58(10):2056-66. doi: 10.1109/TUFFC.2011.2056. — View Citation

Dave JK, Halldorsdottir VG, Eisenbrey JR, Merton DA, Liu JB, Machado P, Zhao H, Park S, Dianis S, Chalek CL, Thomenius KE, Brown DB, Forsberg F. On the implementation of an automated acoustic output optimization algorithm for subharmonic aided pressure estimation. Ultrasonics. 2013 Apr;53(4):880-8. doi: 10.1016/j.ultras.2012.12.010. Epub 2013 Jan 2. — View Citation

Dave JK, Halldorsdottir VG, Eisenbrey JR, Raichlen JS, Liu JB, McDonald ME, Dickie K, Wang S, Leung C, Forsberg F. Noninvasive LV pressure estimation using subharmonic emissions from microbubbles. JACC Cardiovasc Imaging. 2012 Jan;5(1):87-92. doi: 10.1016/j.jcmg.2011.08.017. — View Citation

Dave JK, Halldorsdottir VG, Eisenbrey JR, Raichlen JS, Liu JB, McDonald ME, Dickie K, Wang S, Leung C, Forsberg F. Subharmonic microbubble emissions for noninvasively tracking right ventricular pressures. Am J Physiol Heart Circ Physiol. 2012 Jul;303(1):H126-32. doi: 10.1152/ajpheart.00560.2011. Epub 2012 May 4. — View Citation

Eisenbrey JR, Dave JK, Halldorsdottir VG, Merton DA, Miller C, Gonzalez JM, Machado P, Park S, Dianis S, Chalek CL, Kim CE, Baliff JP, Thomenius KE, Brown DB, Navarro V, Forsberg F. Chronic liver disease: noninvasive subharmonic aided pressure estimation of hepatic venous pressure gradient. Radiology. 2013 Aug;268(2):581-8. doi: 10.1148/radiol.13121769. Epub 2013 Mar 22. — View Citation

Forsberg F, Liu JB, Shi WT, Furuse J, Shimizu M, Goldberg BB. In vivo pressure estimation using subharmonic contrast microbubble signals: proof of concept. IEEE Trans Ultrason Ferroelectr Freq Control. 2005 Apr;52(4):581-3. — View Citation

Halldorsdottir VG, Dave JK, Eisenbrey JR, Machado P, Zhao H, Liu JB, Merton DA, Forsberg F. Subharmonic aided pressure estimation for monitoring interstitial fluid pressure in tumours--in vitro and in vivo proof of concept. Ultrasonics. 2014 Sep;54(7):1938-44. doi: 10.1016/j.ultras.2014.04.022. Epub 2014 May 6. — View Citation

Halldorsdottir VG, Dave JK, Leodore LM, Eisenbrey JR, Park S, Hall AL, Thomenius K, Forsberg F. Subharmonic contrast microbubble signals for noninvasive pressure estimation under static and dynamic flow conditions. Ultrason Imaging. 2011 Jul;33(3):153-64. — View Citation

Shi WT, Forsberg F, Raichlen JS, Needleman L, Goldberg BB. Pressure dependence of subharmonic signals from contrast microbubbles. Ultrasound Med Biol. 1999 Feb;25(2):275-83. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Agreement between SHAPE and pressure catheter measurements Correlation up to 1 day
Primary Error between SHAPE and pressure catheter measurements ANOVA/Post-hoc comparisons up to 1 day
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