Apnea is a respiratory arrest. During apnea, the heart beats slowly, blood oxygen is low and there is a pressure increase in the thorax and abdomen. Its resolution involves a transitional awakening, which is associated to a snore, tachycardia and a transient increase in blood pressure. As a result of multiple awakenings, sleep becomes fragmented and superficial. Despite having the feeling of sleeping, the patient is constantly awakening without realizing it. It is therefore a serious problem that should be treated, as it has harmful consequences for patients’ health. Indeed, it comes with cardiovascular risks (high blood pressure, heart disease, cerebrovascular accidents, etc.).