Stability Study of Tramadol,Fentanyl and Ondansetron Combined with 0.9% Sodium Chloride Injection in Analgesia Pump / 中国药房

ABSTRACT

OBJECTIVE:To study the stability of Tramadol hydrochloride,Fentanyl citrate and Ondansetron hydrochloride in-jection in 0.9% Sodium chloride injection. METHODS:At room temperature [(25±1)℃],three injections were poured into infu-sion bag of disposable analgesia pump,and diluted with 0.9% Sodium chloride injection. The changes in precipitation,turbidity, color and pH value of the mixture were observed. The relative percentage of three injections within 72 h were determined by HPLC method. RESULTS:There was no significant change in the pH value and appearance of the mixture. Relative percentage of tramad-ol hydrochloride,fentanyl citrate and ondansetron hydrochloride were all higher than 97% within 72 h. CONCLUSIONS:The mix-ture of Tramadol hydrochloride,Fentanyl citrate and Ondansetron hydrochloride injection in 0.9% Sodium chloride injection keep stable within 72 h under room temperature.