DRUG RELEASING BALL vs. PHARMACOACTIVE STENT IN LARGE VESSELS: MORPHOLOGICAL ANALYSIS AND FUNCTION VASOMOTOR (DEBORA STUDY) IN LARGE VESSELS: MORPHOLOGICAL ANALYSIS AND FUNCTION VASOMOTOR (DEBORA STUDY)

Who May Qualify: Patients who meet all of the following conditions are included. - Patients aged ≥ 18 years and; - Patients with chronic coronary syndrome, acute coronary syndrome without ST segment elevation or acute coronary syndrome with elevation ST segment in non-culprit lesions 48 hours after the event and; - Patients with de novo lesions in vessels ≥ 3.5 mm without calcification significant no visible thrombus and; - Patients who have been informed of the characteristics of the study and have provided their written willing to sign a consent form. Who Should NOT Join This Trial: Patients who meet at least one of the following conditions are excluded: - Patients with any contraindication for the administration of acetylcholine (ACh) or nitroglycerin (NTG). - Patients with a history of coronary vasospasm or spontaneous dissection of the coronary artery. - Patients with significant medical, surgical or psychiatric condition that would affect the safety of the subject or influence the outcome of the study according to the doctor's opinion. - Patients who received a combination of DES and DCB in the same vessel - Patients with glomerular filtration rate \<30 ml/min/ 1.73 m2 - Patients with body mass index \>35 (may affect the evaluation qualitative diameter of the coronary artery). - Patients with symptomatic congestive heart failure. - Patients with significant autoimmune inflammatory conditions and patients taking immunomodulatory medications (including methotrexate, cyclosporine, steroids). - Patients with heart transplant. - Patients with anemia (Hb \<12 g/dL in men and \<10 g/dL in women). - Patients, women of childbearing age with a positive pregnancy test. - Pregnant female patients. - Patients included in other clinical trials with active follow-up. Always talk to your doctor about whether this trial is right for you.