Antibiotic prophylaxis

The preventive use of antibiotics accounts for about 40% of the amount of antibiotics used, while the number of those with practical value is in the minority. The wrong use of antibiotics for viral infection may even lead to drug resistance or secondary infection. Therefore, the application of preventive antibiotics should be strictly enforced, and the following cases can be prevented: Benzathine penicillin, penicillin V, etc. should be used to remove hemolytic streptococci from the throat and other parts to prevent the onset of rheumatic fever; When epidemic cerebrospinal meningitis is prevalent, sulfadiazine can be taken orally as a preventive drug; Before oral and urinary tract surgery for patients with rheumatic or congenital heart disease, penicillin should be used to prevent the occurrence of infective endocarditis; Penicillin can be used to prevent gas gangrene in patients with trauma, war injury and obliterative vasculitis during amputation; Metronidazole and gentamicin were used to prevent anaerobic infection before colon operation.