hello...i need help about the types of antibiotic. I'm confuse about antibiotic. There are a lot of antibiotic. each antibiotic have their own strength right? But how do i know and how to compare which one is the strongest antibiotic. or it is still depend on patient? but my patient pediatric pt who undergone cardiac surgery but they were on different types antibiotic but still have same symptom like fever or consider as to prevent infection following surgery. So why they have different types antibiotic to prevent infection following surgery?Can someone explain to me, please?