Quantitation of Cardiac Output Change by Impedance Cardiography in Subjects Undergoing Exercise Gated Stress/Rest Tc-99m CZT-SPECT MPI (NICAS)

August 10, 2016 updated by: Sheba Medical Center
The aim of this study is to test for an early post-stress cardiac output (CO) change by impedance cardiography and its relation to the severity and extent of myocardial ischemia and angiographic coronary disease in subjects undergoing exercise stress testing using a novel cadmium-zinc-telluride (CZT) SPECT camera.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) is a well-established noninvasive procedure for the evaluation and risk stratification of patients with coronary artery disease (CAD) (1). However, it has been recognized that in certain patients SPECT MPI is unable to detect the presence of or underestimates the extent of CAD. The fact that moderate to severe perfusion defects are noted in less than half of the patients with significant left main disease (2) has stimulated studies to improve the diagnostic accuracy of SPECT MPI. Such studies have analyzed post-stress parameters such as left ventricular (LV) ejection fraction (EF) (3, 4), wall motion abnormalities (5) and transient LV dilation (6) with images acquired on conventional Anger cameras as long as 60 minutes after the stress tracer injection. Such delayed assessment may miss early ischemic stunning as a result of its transient nature. However, detection of an early post-stress decrease in cardiac output (CO) may serve as a potential marker for the presence of significant or extensive ischemia. The aim of this study is to test for an early post-stress CO change by impedance cardiography and its relation to the severity and extent of myocardial ischemia and angiographic coronary disease in subjects undergoing exercise stress testing using a novel cadmium-zinc-telluride (CZT) SPECT camera.

Study Type

Interventional

Enrollment (Anticipated)

100

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

19 years to 79 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients referred to the Nuclear Cardiology Center for a clinically indicated exercise stress MPI study

Exclusion Criteria:

  • known standard contraindications for ergometry
  • anemia
  • hyperthyroidism
  • intra- and extra-cardiac shunts
  • significant arrhythmia
  • hemodialysis

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: NICAS
There is only one arm - a single cohort. All patients undergoing the nuclear stress test will also have the NICAS evaluation.
Device: Single photon emission computed tomography myocardial perfusion imaging
a novel cadmium-zinc-telluride (CZT) SPECT camera
Other: exercise

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ischemia
Time Frame: 15-20 minutes after stress test
Inducible and reversible perfusion defects, representing myocardial ischemia
15-20 minutes after stress test
Cardiac Output
Time Frame: 15-20 minutes after exercise test
Noninvasive evaluation of cardiac output using a novel algorithm based on impedenace
15-20 minutes after exercise test

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sheba Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2016

Primary Completion (Anticipated)

September 1, 2017

Study Completion (Anticipated)

September 1, 2017

Study Registration Dates

First Submitted

July 24, 2016

First Submitted That Met QC Criteria

August 10, 2016

First Posted (Estimate)

August 11, 2016

Study Record Updates

Last Update Posted (Estimate)

August 11, 2016

Last Update Submitted That Met QC Criteria

August 10, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NICAS 1.0

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Coronary Artery Disease

Clinical Trials on Single photon emission computed tomography myocardial perfusion imaging

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Nigeria

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe