Nctid:
NCT00001459
Payload:
{"hasResults"=>false, "derivedSection"=>{"miscInfoModule"=>{"versionHolder"=>"2024-12-20"}, "conditionBrowseModule"=>{"meshes"=>[{"id"=>"D009202", "term"=>"Cardiomyopathies"}, {"id"=>"D003327", "term"=>"Coronary Disease"}, {"id"=>"D003324", "term"=>"Coronary Artery Disease"}, {"id"=>"D017202", "term"=>"Myocardial Ischemia"}, {"id"=>"D002312", "term"=>"Cardiomyopathy, Hypertrophic"}, {"id"=>"D007511", "term"=>"Ischemia"}, {"id"=>"D006984", "term"=>"Hypertrophy"}], "ancestors"=>[{"id"=>"D010335", "term"=>"Pathologic Processes"}, {"id"=>"D006331", "term"=>"Heart Diseases"}, {"id"=>"D002318", "term"=>"Cardiovascular Diseases"}, {"id"=>"D020763", "term"=>"Pathological Conditions, Anatomical"}, {"id"=>"D014652", "term"=>"Vascular Diseases"}, {"id"=>"D001161", "term"=>"Arteriosclerosis"}, {"id"=>"D001157", "term"=>"Arterial Occlusive Diseases"}, {"id"=>"D001020", "term"=>"Aortic Stenosis, Subvalvular"}, {"id"=>"D001024", "term"=>"Aortic Valve Stenosis"}, {"id"=>"D000082862", "term"=>"Aortic Valve Disease"}, {"id"=>"D006349", "term"=>"Heart Valve Diseases"}], "browseLeaves"=>[{"id"=>"M12154", "name"=>"Cardiomyopathies", "asFound"=>"Cardiomyopathy", "relevance"=>"HIGH"}, {"id"=>"M10543", "name"=>"Ischemia", "asFound"=>"Ischemia", "relevance"=>"HIGH"}, {"id"=>"M6549", "name"=>"Coronary Disease", "asFound"=>"Coronary Disease", "relevance"=>"HIGH"}, {"id"=>"M6546", "name"=>"Coronary Artery Disease", "asFound"=>"Myocardial Ischemia", "relevance"=>"HIGH"}, {"id"=>"M19506", "name"=>"Myocardial Ischemia", "asFound"=>"Myocardial Ischemia", "relevance"=>"HIGH"}, {"id"=>"M9419", "name"=>"Heart Diseases", "relevance"=>"LOW"}, {"id"=>"M16355", "name"=>"Syndrome", "relevance"=>"LOW"}, {"id"=>"M5568", "name"=>"Cardiomyopathy, Hypertrophic", "asFound"=>"Cardiomyopathy, Hypertrophic", "relevance"=>"HIGH"}, {"id"=>"M4117", "name"=>"Angina Pectoris", "relevance"=>"LOW"}, {"id"=>"M19816", "name"=>"Microvascular Angina", "relevance"=>"LOW"}, {"id"=>"M10035", "name"=>"Hypertrophy", "asFound"=>"Hypertrophic", "relevance"=>"HIGH"}, {"id"=>"M22519", "name"=>"Pathological Conditions, Anatomical", "relevance"=>"LOW"}, {"id"=>"M17400", "name"=>"Vascular Diseases", "relevance"=>"LOW"}, {"id"=>"M4469", "name"=>"Arteriosclerosis", "relevance"=>"LOW"}, {"id"=>"M4465", "name"=>"Arterial Occlusive Diseases", "relevance"=>"LOW"}, {"id"=>"M4340", "name"=>"Aortic Valve Stenosis", "relevance"=>"LOW"}, {"id"=>"M6475", "name"=>"Constriction, Pathologic", "relevance"=>"LOW"}, {"id"=>"M2379", "name"=>"Aortic Valve Disease", "relevance"=>"LOW"}, {"id"=>"M9437", "name"=>"Heart Valve Diseases", "relevance"=>"LOW"}, {"id"=>"T449", "name"=>"Aortic Valve Stenosis", "relevance"=>"LOW"}], "browseBranches"=>[{"name"=>"Heart and Blood Diseases", "abbrev"=>"BC14"}, {"name"=>"All Conditions", "abbrev"=>"All"}, {"name"=>"Symptoms and General Pathology", "abbrev"=>"BC23"}, {"name"=>"Rare Diseases", "abbrev"=>"Rare"}]}}, "protocolSection"=>{"designModule"=>{"studyType"=>"OBSERVATIONAL", "enrollmentInfo"=>{"count"=>150}}, "statusModule"=>{"overallStatus"=>"COMPLETED", "startDateStruct"=>{"date"=>"1995-01"}, "expandedAccessInfo"=>{"hasExpandedAccess"=>false}, "statusVerifiedDate"=>"2000-01", "completionDateStruct"=>{"date"=>"2001-03"}, "lastUpdateSubmitDate"=>"2008-03-03", "studyFirstSubmitDate"=>"1999-11-03", "studyFirstSubmitQcDate"=>"2002-12-09", "lastUpdatePostDateStruct"=>{"date"=>"2008-03-04", "type"=>"ESTIMATED"}, "studyFirstPostDateStruct"=>{"date"=>"2002-12-10", "type"=>"ESTIMATED"}}, "conditionsModule"=>{"keywords"=>["Gated Blood Pool", "SPECT Scan", "Coronary Artery Disease", "Hypertrophic Cardiomyopathy", "Microvascular Angina"], "conditions"=>["Cardiomyopathy, Hypertrophic", "Coronary Disease", "Healthy", "Myocardial Ischemia", "Syndrome X"]}, "referencesModule"=>{"references"=>[{"pmid"=>"2785584", "type"=>"BACKGROUND", "citation"=>"Faber TL, Stokely EM, Templeton GH, Akers MS, Parkey RW, Corbett JR. Quantification of three-dimensional left ventricular segmental wall motion and volumes from gated tomographic radionuclide ventriculograms. J Nucl Med. 1989 May;30(5):638-49."}, {"pmid"=>"2991357", "type"=>"BACKGROUND", "citation"=>"Corbett JR, Jansen DE, Lewis SE, Gabliani GI, Nicod P, Filipchuk NG, Redish GA, Akers MS, Wolfe CL, Rellas JS, et al. Tomographic gated blood pool radionuclide ventriculography: analysis of wall motion and left ventricular volumes in patients with coronary artery disease. J Am Coll Cardiol. 1985 Aug;6(2):349-58. doi: 10.1016/s0735-1097(85)80171-6."}, {"pmid"=>"455620", "type"=>"BACKGROUND", "citation"=>"Borer JS, Kent KM, Bacharach SL, Green MV, Rosing DR, Seides SF, Epstein SE, Johnston GS. Sensitivity, specificity and predictive accuracy of radionuclide cineangiography during exercise in patients with coronary artery disease. Comparison with exercise electrocardiography. Circulation. 1979 Sep;60(3):572-80. doi: 10.1161/01.cir.60.3.572. No abstract available."}]}, "descriptionModule"=>{"briefSummary"=>"Myocardial ischemia is a heart condition in which not enough blood supply and oxygen reaches the heart muscle. Damage to the major blood vessels of the heart (coronary artery disease), minor blood vessels of the heart (microvascular heart disease), or damage to the heart muscle (hypertrophic cardiomyopathy) can cause myocardial ischemia. Any of theses three conditions can cause patients to experience chest pain and other symptoms as well as cause the heart to function improperly.\n\nIn order to detect myocardial ischemia researchers can use tests to measure the movement of the walls of the heart. Walls receiving inadequate supplies of blood often move less and occasionally move in the opposite direction. Some of the tests may require patients to receive injections of radioactive tracers. The radioactive material acts to enhance 3 dimensional pictures of the heart and helps to identify areas of ischemia.\n\nThe purpose of this study is to determine whether 3-dimensional imaging (tomography) with radioactive tracers can provide more important information about heart wall function than routine diagnostic tests.", "detailedDescription"=>"We propose to assess regional myocardial function using gated blood pool imaging acquired by a tomographic technique at rest and during stress in patients with myocardial ischemia (coronary artery disease, hypertrophic cardiomyopathy and microvascular angina). Gender differences in response to exercise and pharmacologic stress will also be evaluated. Normal subjects will be studied in order to establish a control database. Current methods of gated blood pool studies use planar imaging, with its attendant limitations; poor resolution and inadequate separation of the myocardial segments, only one view assessed during exercise and superimposition of overlying structures. Tomographic imaging has the advantages of reconstructing 3-dimensional data of the entire heart with the ability to improve segmental resolution and separate overlapping structures, potentially resulting in increased sensitivity and specificity for detection of disease.\n\nThe role of pharmacologic stress will be assessed by comparison with exercise stress, in order to validate its use in subjects unable to exercise and identify gender related differences. Quantitative measures of regional wall motion obtained from tomography will be compared to regions of prior myocardial infarction (if present), and with other modalities for evaluating cardiac structure and function. The diagnostic and prognostic value of tomographic wall motion analysis will be studied in patients with myocardial ischemia, with special emphasis on correlation between physiologic variables of coronary blood flow and metabolic function."}, "eligibilityModule"=>{"sex"=>"ALL", "stdAges"=>["CHILD", "ADULT", "OLDER_ADULT"], "healthyVolunteers"=>true, "eligibilityCriteria"=>"Patients with known coronary artery disease (obstruction of greater than or equal to 50% in at least one major coronary artery).\n\nPatients with hypertrophic cardiomyopathy.\n\nPatients with microvascular angina.\n\nNo unstable angina.\n\nNo hepatic or renal failure.\n\nInfective endocarditis\n\nNo primary valvular disease.\n\nNo congenital heart disease.\n\nNo pregnant or breast feeding women."}, "identificationModule"=>{"nctId"=>"NCT00001459", "briefTitle"=>"Analysis of Heart Muscle Function in Patients With Heart Disease and Normal Volunteers", "organization"=>{"class"=>"NIH", "fullName"=>"National Institutes of Health Clinical Center (CC)"}, "officialTitle"=>"Tomographic Myocardial Wall Motion Analysis in Patients With Myocardial Ischemia and in Normal Subjects", "orgStudyIdInfo"=>{"id"=>"950048"}, "secondaryIdInfos"=>[{"id"=>"95-H-0048"}]}, "contactsLocationsModule"=>{"locations"=>[{"zip"=>"20892", "city"=>"Bethesda", "state"=>"Maryland", "country"=>"United States", "facility"=>"National Heart, Lung and Blood Institute (NHLBI)", "geoPoint"=>{"lat"=>38.98067, "lon"=>-77.10026}}]}, "sponsorCollaboratorsModule"=>{"leadSponsor"=>{"name"=>"National Heart, Lung, and Blood Institute (NHLBI)", "class"=>"NIH"}}}}
