Une étude diagnostique transversale à centre unique de la dysfonction microvasculaire coronarienne

Inclusion Criteria:

• Adult women age ≥18 years referred for coronary angiography
• Stable ischemic heart disease, defined by ischemic symptoms and/or myocardial ischemia by stress testing
• Administration of aspirin therapy prior to cardiac catheterization

Exclusion Criteria:

Pre-Cath Exclusion criteria:

• Active bleeding and/or bleeding diathesis
• Anemia (hemoglobin <9 mg/dl)
• Known thrombocytosis (platelet count >500,000)
• Know thrombocytopenia (platelet count <100,000)
• NSAIDs (e.g., ibuprofen, naproxen) within 3 days
• Platelet antagonists other than aspirin and thienopyridines, within 7 days
• Prior percutaneous coronary intervention or coronary artery bypass grafting
• Acute myocardial infarction within 3 months
• Severe valvular heart disease
• Cardiogenic shock or mechanical circulatory support
• New York Heart Association (NYHA) Functional Class III or IV heart failure
• Ejection Fraction <40%
• Hypertrophic obstructive cardiomyopathy or severe left ventricular hypertrophy
• Pregnancy
• Contraindication to intravenous infusion of adenosine during coronary angiography, due to known hypersensitivity to adenosine, known or suspected bronchoconstrictive or bronchospastic lung disease (severe asthma), second- or third-degree AV block (except in patients with a functioning artificial pacemaker), or sinus node disease, such as sick sinus syndrome or symptomatic bradycardia,

Angiographic Exclusion criteria:

• Obstructive CAD (≥50% luminal obstruction in ≥1 major epicardial coronary arteries by invasive coronary angiography)
• Unfavorable coronary artery anatomy for guidewire positioning (as determined by the angiographer or PI)