Sputum, Bronchoalveolar lavage fluid, blood cultures and a chest drain swab grew MR-Ab, resistant to ampicillin, co-amoxiclav, aztreonam, amikacin, ceftazidime, cefotaxime, cefuroxime, ciprofloxacin, gentamicin, meropenem, piptazobactam, tobramycin and sensitive only to colistin.