This is a prospective, randomized, double-blind, double-dummy, and controlled study of DLBS1033 in the management of acute non-ST elevation myocardial infarction (NSTEMI) without early coronary revascularization. It is hypothesized that the combination of DLBS1033 with aspirin and clopidogrel will result in greater reduction of infarct size in comparison with that of aspirin and clopidogrel alone.
After diagnosed NSTEMI, patient is hospitalized and given medications according to the standard management of acute NSTEMI, including anticoagulant low molecular weight heparin. Eligible subjects are then randomized to receive either DLBS1033 at a dose of 490 mg three times daily or its placebo in addition to clopidogrel 75 mg once daily and aspirin 160 mg once daily for an 8-week course of therapy. Afterwards, the administration of DLBS1033 and its placebo are stopped, while the dual antiplatelet therapy (aspirin and clopidogrel) remains for another 16 weeks at the same dose regimen as the previous. Clinical and laboratory examinations to evaluate the investigational drug's efficacy and safety are performed at baseline, week 4, week 8, and week 24. To guard the safety of the study subjects, haemostasis parameters, hematology parameters, and CRUSADE bleeding score are evaluated every two-week-interval over the first eight weeks of treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Investigational drug or placebo will be given in addition to the standard therapy which consists of: aspirin enteric-coated tablet 1 x 160 mg (two tablets @ 80 mg) and clopidogrel film-coated tablet 1 x 75 mg daily for eight weeks. Standard therapy alone will still be given afterwards, for another sixteen weeks
Investigational drug or placebo will be given in addition to the standard therapy which consists of: aspirin enteric-coated tablet 1 x 160 mg (two tablets @ 80 mg) and clopidogrel film-coated tablet 1 x 75 mg daily for eight weeks. Standard therapy alone will still be given afterwards, for another sixteen weeks
Central Army Hospital RSPAD Gatot Soebroto
Central Jakarta, Jakarta Special Capital Region, Indonesia
Binawaluya Cardiac Hospital
Jakarta, Jakarta Special Capital Region, Indonesia
Infarct size
The quantitative change of infarct size, measured using SPECT.
Time frame: Week 0, week 8, week 24
LV function
Improvement in left ventricular (LV) function, measured by 2D echocardiography.
Time frame: Week 0, week 4, week 8, and week 24
Composite endpoints
Composite endpoints (composite of major adverse cardiovascular events), comprising of all-cause of death, recurrent myocardial infarction or ischemic stroke within the study period.
Time frame: Week 0 - 24
Individual event of MACE and other cardiovascular events
Individual event of MACE and other cardiovascular events, such as: shock, pulmonary oedema, congestive heart failure, arrhythmias, hemodynamic instability/cardiogenic shock, including the presence of new infarct(s) within the study period.
Time frame: Week 0 - 24
Nitroglycerin amount
Number of nitroglycerin (rescue medicine) taken during the study period.
Time frame: Week 0 - 24
Plasma fibrinogen level
Change in plasma fibrinogen level.
Time frame: Week 0, 4, 8, and 24
Plasma d-dimer level
Change in plasma d-dimer level.
Time frame: Week 0, 4, 8, and 24
hs-CRP
Change in hs-CRP.
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Time frame: Week 0, 4, 8, and 24
Routine hematology
Routine hematology measured includes: hemoglobin, hematocrit, RBC, WBC, differentiation of WBC, and platelet count. Particularly for hemoglobin and hematocrit level, they are measured at baseline and every interval of 2 weeks over the first 8 weeks of treatment and at the end of study (week 24).
Time frame: Week 0, 4, 8, and 24
Liver function
Liver function measured includes: serum ALT (SGPT), serum AST (SGOT), alkaline phosphatase, and total bilirubin. Particularly for serum ALT, it is measured at baseline and every interval of 2 weeks over the first 8 weeks of treatment and at the end of study (week 24).
Time frame: Week 0, 4, 8, and 24
Renal function
Renal function measured includes: serum creatinine and BUN. Particularly for serum creatinine, it is measured at baseline and every interval of 2 weeks over the first 8 weeks of treatment and at the end of study (week 24).
Time frame: Week 0, 4, 8, and 24
Haemostasis parameter
Haemostasis parameter measured includes: prothrombin time (PT), International Normalized Ratio (INR), and activated partial thromboplastin time (aPTT). Particularly for PT and INR, they are measured at baseline and every interval of 2 weeks over the first 8 weeks of treatment and at the end of study (week 24).
Time frame: Week 0, 4, 8, and 24
Adverse event
Adverse events (especially major and minor bleeding) are observed and carefully evaluated along the course of the study.
Time frame: Week 0 - 24