Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Comparison of Echocardiographic Techniques in Diagnosis of Coronary Artery Disease

3. marts 2008 opdateret af: National Heart, Lung, and Blood Institute (NHLBI)

Comparison of Myocardial Contrast Echo With Dobutamine Echo in Diagnosis of Coronary Artery Disease

This study is designed to compare two different echocardiographic techniques in the evaluation of heart disease (coronary artery disease). Both tests called Myocardial Contrast Echocardiography with Pharmacologic Stress and Stress Echocardiography with Dobutamine, are performed using a standard echocardiographic machine.

Myocardial Contrast Echocardiography (MCE) does not use radioactivity. It uses sound waves like standard echocardiography. However, with MCE patients receive an injection of a "contrast agent" directly into the blood stream through a vein. The contrast agent, called Optison, is made of tiny microbubbles smaller than red blood cells. The echocardiogram can detect these microbubbles in the small blood vessels of the heart muscle and allow researchers to find areas of the heart receiving less blood flow than others. It is important to observe the heart during exercise because there are changes in blood flow. Since MCE cannot be performed when the patient is exercising, researchers give medication (adenosine) that stimulates the heart and creates a situation similar to exercise.

Stress Echocardiography with Dobutamine does not use radioactivity. It uses sound waves like standard echocardiography. During this echocardiogram patients receive doses of a medication called dobutamine that stimulates the heart to beat stronger and faster.

The purpose of this study is to evaluate the accuracy of MCE compared to stress echocardiography at detecting coronary artery disease (CAD).

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Stress echocardiography has become a valuable technique for the non-invasive detection of coronary artery disease (CAD). Its accuracy has been shown to be superior to that of the exercise electrocardiogram and comparable to that of myocardial perfusion imaging. Myocardial contrast echocardiography (MCE) offers the potential to evaluate tissue perfusion at the level where oxygen transfer to the myocytes occurs. MCE can, therefore, provide information regarding the functional status of the myocardial microvasculature and presence of blood flow disparity. The purpose of this study is to evaluate the accuracy of MCE compared to stress echocardiography. We will correlate these results with findings from coronary angiography and compare the ability of those techniques to detect CAD.

Undersøgelsestype

Interventionel

Tilmelding

150

Fase

  • Fase 2

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Maryland
      • Bethesda, Maryland, Forenede Stater, 20892
        • National Heart, Lung and Blood Institute (NHLBI)

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Patients with known or suspected coronary artery disease.

Adults 18 years of age or older.

No pre-menopausal patients who are lactating, pregnant or potentially pregnant as judged by history, physical examination, ultrasound or urine pregnancy test.

No unstable angina patients.

No recent myocardial infarction patients (less than 1 month).

No frequent ectopy which precludes adequate image acquisition.

No history of asthma or chronic obstructive pulmonary disease.

No patients receiving aminophylline, theophylline or dipyridamole.

No presence of second and third degree heart block without pacemaker.

No significant hypertension (systolic blood pressure greater than 170 mm Hg) or hypotension (systolic blood pressure less than 100 mm Hg).

No hypotension: basal sitting systolic arterial pressure less than 100 mm Hg confirmed 30 minutes later.

No sinus tachycardia greater than or equal to 100 beats per min.

No atrial fibrillation.

No inadequate two-dimensional echocardiographic windows.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

National Heart, Lung, and Blood Institute (NHLBI)

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. marts 1999

Studieafslutning

1. marts 2001

Datoer for studieregistrering

Først indsendt

3. november 1999

Først indsendt, der opfyldte QC-kriterier

9. december 2002

Først opslået (Skøn)

10. december 2002

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

4. marts 2008

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. marts 2008

Sidst verificeret

1. februar 2000

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 990077
  • 99-H-0077

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Koronar sygdom

  • IRCCS Policlinico S. Donato
    Rekruttering
    Anomal aorta-oprindelse af koronararterie (AAOCA)
    Anomalous aorta origin of the coronary artery (AAOCA)
    Italien
  • IRCCS Policlinico S. Donato
    University of Pavia; University of Naples; The Mediterranean Institute for...
    Rekruttering
    Fremskynd diagnosticering og evaluering af anomaløs kranspulsåre fra aorta (SMART)
    Myokardieiskæmi | Pludselig hjertedød | Anomal koronararterieoprindelse | Anomal koronararterie, der opstår fra den modsatte sinus | Anomal koronararterie med aorta-oprindelse og forløb mellem de store arterier | Anomalous aorta origin of the coronary artery (AAOCA) | Myokardieiskæmi, Angina Pectoris og andre forhold
    Italien

Kliniske forsøg med Myokardiekontrastekkokardiografi

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Macedonia

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner