Patients with Coronary Artery Disease or At High Cardiovascular Risk: Measuring Compliance with Treatment for Obstructive Sleep Apnea Syndrome

Inclusion Criteria: Target population: with coronary artery disease or at very high risk of coronary artery disease: * Patients with coronary artery disease with or without co-morbidities (smoking, diabetes, hypertension, dyslipidaemia, renal insufficiency, overweight, emerging factors including anxiety-depression, shift workers, etc.). * Hypertensive patients at high cardiovascular risk (target organ damage such as LVH or albuminuria) * Diabetic patients at high cardiovascular risk * Type of heart disease: ischaemic heart disease without clinically significant heart failure (NYHA II, III, IV) For the experimental group (MAD): patients with moderate or severe OSA with intolerance or refusal of CPAP and managed by MAD. For the control group (CPAP): patients with moderate or severe OSA treated with CPAP. Exclusion Criteria: * Patients with heart failure not stabilised according to the investigator (NYHA IV) * Severe psychiatric disorders * Pregnant or breast-feeding women * Opposition to participation after a period of reflection * Not affiliated to a social security scheme, * Persons under court protection, * Persons under guardianship or curatorship * Person taking part in another study with an exclusion period still in progress * Inability to follow the patient during the study period.