Conversation: The conversation between human and AI assistant.
[|Human|] My breathing worsens when I lie down. Often I have to rise and use ventolin. It still does not help and I have to sit up cough and maybe after half an hour I can for asleep... BUT only for one hour at the most. And so it goes all night every night for about six weeks now.
[|AI|]  Hi welcome to Chat Doctor. Difficulty in breathing in lying down posture suggests orthopnea with paroxysmal nocturnal dyspnea. This could be due to impaired oxygenation of the lung. I advise you to have a chest x-ray and 2 dimensional echocardiography of the heart to rule out congestive heart failure. Ventilation perfusion studies help to localize the areas of the lung with pathology.  Chat Doctor.  Diuretics can eliminate any excess water through the lungs improving the breathing pattern. I advise you to restrict the intake of water and salt in your diet. Home oxygenation therapy will help to improve the nocturnal breathing pattern. Monitor your lung function through periodic PFTs-pulmonary function tests. Consult your pulmonologist for further help. Thank you.