No, you will not always be resistant to them. Everytime you culture, you may have different suseptiblity to various antibiotics. Many times I have been resistant to certain antibiotics, according to the cultures, and they actually still work because it is only that specific area where the sputum was coughed up in the lungs where their are resistant bugs. And maybe the majority of the sputum in the lungs is still actually suseptible to those antibiotics therefore they work and you feel better, regardless of the culture results.
Also, many times I find that what I was resistant too in the past I am now sensitive too. So, I am using antibiotics that are sensitive now eventhough in the past they have shown resistance.
Also, I don't know if your doctor ever talked to you about "synergy" with antibiotics---basically putting two antibiotics together to produce a better result than when give by themselves--because of the combination that they form when put together.
It was explained to me by my doctor like this: Antibiotic A = 1 and Antibiotic B = 1 (given seperately--at different times (a total result of 2), but Antibiotic A + Antibiotic B = 3(given together). They work better together with a more potent effect and less chance of resistance occuring because you are not giving them seperately.
Hope this helps--if you have anymore questions just let me know<img src="i/expressions/face-icon-small-smile.gif" border="0"> cindy-35 w/CF PA MRSA Double Delta F508