There are reports from 1985 about the induction of resistance to ceftazidime and aminoglycosides in Pseudomonas aeruginosa mediated by imipenem.
I consider that this phenomenon is important to take into account. In particular to evaluate the empirical indication of imipenem in the management of infections in patients with severe immunosuppression.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC176306/
http://www.ncbi.nlm.nih.gov/pubmed/3104276