Hi Doctor, my father hd gone through brain surgery after RTA in April this year. He was recovering well for next three months but after then he was getting high amount of phlegm that he was not able to spit. Later he left to eat. One day he was not able to breathe properly so we admitted him in a hospital. Now we got to know that he has Pulmonary Tuberculosis with signs of obstructive airways. His sodium level is going down every day (Hyponatremia).He has gone through tracheostomy. Please help.