The study identifies multiple AMR genes and mutations in Pseudomonas aeruginosa CL232, including bla PDC-34, bla OXA-488, and various efflux pumps, which contribute to resistance against ceftazidime, fosfomycin, and other antibiotics. It also shows that the combination of ceftazidime-avibactam and fosfomycin is effective against multidrug-resistant P. aeruginosa.