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He has several issues..
For COPD - get him evaluated by a Pulmonologist / he has to stop smoking
/ Is his heart OK?
For kness - Orthopaedician
His GP may be hesitant - because drugs have side effects, especially in COPD.
Sedatives could depress respiration / NSAID
for pain relief may affect the stomach or kidney
The best option will be to admit him to a multi speciality tertiary care hospital
Wishing speedy recovery