Randomized Clinical Trial of Non-Surgical Reperfusion of the Coronary Arteries
NCT ID: NCT00000503
Last Updated: 2013-11-26
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
PHASE3
INTERVENTIONAL
1982-08-31
1987-10-31
Brief Summary
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Detailed Description
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Angiographic studies in the acute stage of myocardial infarction have shown complete occlusion in 75-85 percent and subtotal lesions in the remaining cases. Evidence for spasm in acutely occluded arteries has been reported. However, the majority of pathological as well as intraoperative examinations have yielded thrombotic material at the site of complete obstruction. Indirect evidence of thrombotic material was provided by successful intracoronary thrombolysis in 80 percent of infarct patients with complete obstruction. There could be causative relationships between spasm, intimal damage and coronary thrombosis. Selective applications of spasmolytic and/or thrombolytic substances into occluded vessels enabled high local concentrations with doses that caused little or no systemic effect. Angiographic verification of the results of this pharmacotherapy would help to clarify the role of spasm and thrombus in the pathogenesis of the acute coronary occlusion.
Reperfusion in man has been achieved by coronary by-pass surgery in the acute stage of infarction. Follow-up angiography revealed significant improvement of left ventricular function. Intracoronary streptokinase infusion resulted in recanalization of acute coronary occlusion in 80 percent of cases within 20-30 minutes of infusion time. Reperfusion achieved by intervention angiography has been associated with improved local wall motion as well as improved left ventricular function. Improvement in left ventricular function depended on the duration of symptoms prior to reperfusion and on the presence or absence of collateral blood flow. Available data suggested that improvement was more likely to occur if reperfusion was achieved within 3-4 hours. However, since the majority of patients reached the hospital after greater than 4 hours of chest pain, study of functional changes following late reperfusion was of great practical significance.
DESIGN NARRATIVE:
The study was a randomized trial of myocardial reperfusion in acute myocardial infarction by selective intracoronary infusion of nitroglycerin and/or intracoronary infusion of streptokinase. The trial was single-blinded as to the interventional therapy; it was double-blinded as to the drug infused. The primary endpoint was the ejection fraction on the 10th day of intervention. Patients were assigned to one of four treatment arms: an intracoronary infusion of streptokinase; an intracoronary infusion of nitroglycerin; combined infusions of nitroglycerin and streptokinase; a control group receiving conventional therapy without acute catheterization. All patients underwent anticoagulant therapy with intravenous heparin followed by warfarin for three months. Patients were followed for a minimum of two years.
The study completion date listed in this record was obtained from the Query/View/Report (QVR) System.
Conditions
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Study Design
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RANDOMIZED
TREATMENT
DOUBLE
Interventions
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nitroglycerin
streptokinase
heart catheterization
Eligibility Criteria
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Inclusion Criteria
18 Years
77 Years
ALL
No
Sponsors
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National Heart, Lung, and Blood Institute (NHLBI)
NIH
Principal Investigators
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Peter Rentrop
Role:
MOUNT SINAI HOSPITAL
References
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Rentrop KP, Feit F, Sherman W, Stecy P, Hosat S, Cohen M, Rey M, Ambrose J, Nachamie M, Schwartz W, et al. Late thrombolytic therapy preserves left ventricular function in patients with collateralized total coronary occlusion: primary end point findings of the Second Mount Sinai-New York University Reperfusion Trial. J Am Coll Cardiol. 1989 Jul;14(1):58-64. doi: 10.1016/0735-1097(89)90054-5.
Zhan S, Wang J, Zhu M, Liu Y, Han F, Sun L, Wang Q, Huang Z. The Inhibitory Effects of NCT503 and Exogenous Serine on High-Selenium Induced Insulin Resistance in Mice. Nutrients. 2025 Jan 16;17(2):311. doi: 10.3390/nu17020311.
Other Identifiers
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22
Identifier Type: -
Identifier Source: org_study_id