title: Controlled, comparative study of ciprofloxacin versus ampicillin in treatment of bacterial respiratory tract infections.
abstract: The efficacy and safety of ciprofloxacin in bacterial bronchitis were compared with those of ampicillin in a double-blind, prospective clinical trial. Eighty-seven patients received either oral ciprofloxacin (750 mg twice daily) or oral ampicillin (500 mg four times daily). Ciprofloxacin was as effective as ampicillin and produced a 98 percent clinical cure rate. Significantly more pretreatment bacterial isolates were susceptible to ciprofloxacin (p less than 0.05), and ciprofloxacin had a significantly higher rate of sputum sterilization than did ampicillin (p less than 0.05). Ciprofloxacin showed broad in vitro antibacterial activity with particularly low minimal inhibitory concentrations for gram-negative organisms. Ciprofloxacin was well tolerated; there were few adverse effects, and patients had a significantly lower incidence of diarrhea with ciprofloxacin than with ampicillin (p less than 0.05). Ciprofloxacin was an effective and well-tolerated treatment for bacterial bronchitis that had the advantages of broad in vitro antibacterial activity and twice-daily dosing.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000667:Ampicillin / Q000009:adverse effects / Q000627:therapeutic use*; D001424:Bacterial Infections / Q000188:drug therapy*; D002939:Ciprofloxacin / Q000009:adverse effects / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D004064:Digestive System / Q000187:drug effects; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010403:Penicillin Resistance; D011446:Prospective Studies; D012141:Respiratory Tract Infections / Q000188:drug therapy*; D013806:Theophylline / Q000097:blood
chemical_list: D002939:Ciprofloxacin; D000667:Ampicillin; D013806:Theophylline