@irenea8 I may have responded already ....the IV antibiotic was Zosyn . I recently brought up a sputum from the lungs and Pseudomonas showed up again , colonized … I am non symptomatic so I am not being treated …not even oral antibiotics . However my Pulmonologist is having a CT scan done to check my lungs for infection and also an arterial blood gas test ! These will be done in the next week or so , so stay tuned ! Kay Bastasini