MRSA After Sinus Surgery. Am I More Prone to Infection in Future?

One of the major drawbacks of the over-use of antibiotics in human and animal populations is the development of drug resistant bacteria.  This represents more of an evolution of the bacteria to avoid being killed by specific antibiotics.  Furthermore, what was once a hospital phenomenon has now spread to the community at large in the United States and elsewhere, whereby percentages of populations are colonized with drug resistant bacteria.

Given your history, I would suggest a nasal culture to rule out colonization with MRSA.  If there is no evidence of colonization, your risk of infection should be no greater than average.  One preoperative precaution taken in my practice is to have patients bathe in and apply Hibiclens (Chlorhexidine) to the operative sites the night before and the morning of the procedure.

Yes, you are more prone to infection in the future as MRSA has a tendency to stay in the nostril.  The treatment is to use an antibiotic ointment called bactroban in the nostril for 6 weeks to ensure that the infection really is completely gone.

First you have to ascertain if you have any colonization and a culture would give some guidance.  In general though if your nose and sinuses have returned to normal then most likely you do not have any persistence of MRSA.  The possiblity of biofilm exists, but again it sounds as if your infection has resolved.  I don't think you have any higher chance now of any infection, provided your immune system is normal.  I recommend hibicleanse shower and bactroban ointment in the nose prior to surgery - CDC recommendations for MRSA.