My father is a copd patient un stage iv. He is continuously on domicilary oxygen since last five years. He is also taking nebolisation twice a day anfld sequadra inhalers. He has also been immunised. Can you tell me what further can be done or where in india is the best treatment available for COPD. OR SHALL we consult the auyervedic doctor. Because he is not getting any respite. His oxygen saturation while on oxygen goes to maximum 80 to 85 and 70 when not on oxygen. Kindly guide me in this matter properly what should we do.