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[Evaluation of antibacterial activity of amoxycillin sodium and clavulanate potassium and the pharmacoeconomics in the therapy of acute respiratory infection].

OBJECTIVE
To explore the antibacterial activity of amoxycillin sodium and clavulanate potassium (trade name: Anqi) in vitro and the pharmacoeconomics in the therapy of acute respiratory infection.


METHODS
Minimal inhibition concentration (MIC), minimal bactericidal concentration (MBC) and bactericidal curve of amoxycillin sodium and clavulanate potassium against common pathogens were determined and compared with some other same kind of antibiotics without beta-Lactamase inhibitor. Eighty cases diagnosed as respiratory infection were randomly divided into 4 groups: group 1 was treated with i.v. Anqi; group 2 was treated with i.v. Anqi and oral consecutive strategy; group 3 was treated with iv ampicillin and sulbactam; group 4 was treated with i.v. cefuroxime. The clinical therapeutic effects were observed and cost-effectiveness analyzed.


RESULTS
In terms of MIC, MBC and bactericidal curve of 135 bacterial strains, Anqi was superior to the other same-kind antibiotics without beta-lactamase inhibitor, this effect was especially obvious on Klebsiella pneumoniae and Escherichia coli which can produce extended spectrum beta-lactamases (ESBLs). The cost-effectiveness of the consecutive therapy group was the best.


CONCLUSION
Anqi has a wide antimicrobial spectrum and strong effect on the bacteria producing ESBLs, the consecutive therapy strategy should be clinically recommended.