There have been made polygraphic registrations for 20 patients believed to be suffering from breathing disorders during sleep. The patients were also subjected to a detailed ENT clinical exam and nasal endoscopy. The patients filled a form for the polygraphic laboratory and a questionnaire for ESS auto-evaluation. Breathing problems during sleep, including sleep apnea, are a common pathology being diagnosed through the adverse effects it has on the quality of life. These effects can be quantified by the sleep deprivation index on the Epworth Scale (ESS). The risk of the patients to fall asleep during the daytime has a great implication on the quality of life. The values range between 0 and 24 and can be correlated with the index of apnea-hypopnea characterizing sleep apnea. This paper wants to synthesize a study on a group of patients with sleep apnea. This study correlated the data obtained from the polysomnography registration to the ones given by the specific form filled with the patients. In the end the AHI index value was related to the ESS index. The ENT pathology determining to some persons sleep apnea is also affecting the quality of life.