Individuals who had no outward signs of sleep apnea were diagnosed with sleep apnea and placed on CPAP (Continuous Positive Airway Pressure) intervention. The study looked at emotional variables prior to starting therapy and one month following the initiation of CPAP use. They all had mild to moderate sleep apnea accompanying a primary diagnosis related to heart disease (cerebrovascular disease and hypertension). A key factor was their surprise at being diagnosed with sleep apnea and sleep apnea was not perceived as being as problematic as it can be and affecting the deteriorating processes of heart disease. Motivation emerged from the threat of a cardiovascular event (stroke, TIA) as opposed to the concern of sleep apnea. Adapting to CPAP use was difficult for all of the usually found reasons; problem with the machine or the interface device and unrestorative sleep. Matthias, M., Chumbler, N., & Bravata, D., et al., Challenges and motivating factors related to positive airway pressure therapy for post-TIA an stroke patients, 2014, Behavioral Sleep Medicine, 12:143-157).