Correlation Between Trachebroncho Malacia/Hyperdynamic Airway Collapse And Obstructive Sleep Apnea

Inclusion Criteria: * Females and males ages 18-80 years old * Able and willing to provide written informed consent * Existing diagnosis of TBM or HDAC or both * No pre-existing diagnosis of OSA * No history of reconstructive surgery of chest wall or diaphragm Exclusion Criteria: * Inability to provide informed consent * Non-English speaking * Poorly controlled congestive heart failure * Untreated Insomnia * Severe Coronary artery disease with active symptoms of angina * Patient is pregnant, or plans to become pregnant in next 3 months * Moderate to severe bronchiectasis * Severe untreated gastroesophageal disease (GERD). * Moderate to large hiatal hernia deemed to be atleast in part responsible for TBM/HDAC * Airway obstruction not caused by TBM /HDAC or secondary TBM/HDAC caused by conditions such as Chronic Obstructive Pulmonary Disease (COPD). * Active or recent (with in last one year) cancer or cancer therapy (chemotherapy, radiation therapy or surgery) * Inability to properly perform the home sleep test * Unreliable test data after 2 attempts * BMI\>45