COPD Stage - 1 TREATMENT : When the FEV1 is less than 80% of normal the patient is diagnosed as stage 1 COPD . Patient may or may not notice symptoms . Life expectancy for stage 1 people is only slightly less than the normal people. It is around 17.4 years for a male who is 65 year old. Patients who continue smoking will have shorter life than who does not smoke or who stop smoking. 14 yrs. is the approximate life expectancy period for current smokers (65 yr. male) Diet and exercise help here to enhance the chances of stretch in the life expectancy TREATMENT : Short-Acting Bronchodilators Diet and Exercise

COPD Stage - 2 TREATMENT : When FEV1 is between 50% and 80% a patient is diagnosed as stage 2. Shortness of breath , Cough and mucus are common symptoms here. According to the research conducted by Robert M Shavalle and others. All these readings apply to 65 yr. old male A stage 2 COPD is expected to live for 17.1 if he has smoked never in his life. Current smoker has 12.0 yrs. of life and former smoker 15.9 years. TREATMENT : Short- Acting Bronchodilators Diet and Exercise Long - Acting Bronchodilators Rehab

COPD Stage - 3 TREATMENT : When FEV1 is between 30% and 50% , the patient is in stage 3. Severe cough ,shortness of breath , cough and mucus are the symptoms Stage 3. Patient is expected to live for 16.5 if he has not smoked in his life. Current smoker has 8.5 years and former smoker 11.7 years TREATMENT : Inhaled Glucocorticosteroids Short - Acting Bronchodilators Diet and Exercise Long - Acting Bronchodilators Rehab

COPD Stage - 4 Stage 4 patients has FEV1 less than 30% and this is a very serious condition. He/she is expected to live for 16.5 if he has not smoked in his life. This stage patient has the same numbers as stage 3 patient.