Broad-spectrum antibiotic their greater potential to disrupt a larger variety of normal human flora. After continued exposure to an antibiotic, bacteria may develop changes in their structure or function that make them resistant to the antibiotic. These resistant organisms will live, while the susceptible organisms will die, leaving the population of bacteria entirely resistant to a given antibiotics. For example, after the discovery of penicillin and its subsequent use to treat bacterial infections, bacteria were found to have begun producing an enzyme, penicillinase, which rendered the penicillin molecule inactive. In response to this newly-acquired resistance, newer penicillins were produced that could not
Antibiotic prophylaxis background, training, nurse and pharmacist influences, medication supply, and logistics. The American Heart Association (AHA) now recommends antibiotic prophylaxis for very few patients since only a small number of cases of endocarditis might be prevented by this procedure. Antibiotic prophylaxis in domestic animal feed mixes has been employed in America since at least 1970. Over time, the use of antibiotics for growth promotion purposes in livestock was discovered. In 1986, some European countries banned the use of antibiotics because of research they found that linked antibiotic use in livestock and drug resistant bacteria in humans. The European Union regulated in