“…Undisturbed nasal breathing is essential for normal breathing physiology as a whole and the effects of nasal obstruction on the respiratory and cardiovascular systems have been well studied: right ventricle problems 1,2 , ischemic heart diseases 3,4,5,,6,7,8,9 , sleep disorders 10,11,12,13 , mucociliary clearance system disturbances 14,15 , paranasal sinus pathology 16,17 , have all been described as a result of impaired nasal breathing. The connection between the upper and lower respiratory systems has been recognized in allergic rhinitis and asthma as well, resulting in united airways concept.…”