It is used to treat the following infections in adults: • nosocomial pneumonia (an infection of the lungs). ‘ Nosocomial ’ means that the infection was caught in hospital, including pneumonia caused by the use of a ventilator (a machine that helps a patient to breathe); • complicated infections in the abdomen (tummy). ‘ Complicated ’ means that the infection is difficult to treat; • complicated infections of the urinary tract (the structures that carry urine).