as you mentioned that two lobes have been removed, so definitely lung capacity will be reduced, but in order to prevent him from the consequences i will advice you to take Homeopathic
treatment which has no side effects like allopathic medicines and will definitely help your brother from recovering faster from his troubles.
Allopathic medicines used for asthma
or breathing trouble may result in some skin problems. but in Homeopathy
it will be totally safe.
For more info u can mail us at firstname.lastname@example.org or visit us at www.drkackerhomeopathy.com