<prompt> Answer this question truthfullyWhat are the extended-spectrum penicillins used to treat Pseudomonas aeruginosa infections?  <response>: <reason> What are the extended-spectrum penicillins used to treat Pseudomonas aeruginosa infections? The extended-spectrum penicillins used to treat Pseudomonas aeruginosa infections are piperacillin, ticarcillin, and carbenicillin. 