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J Zoo Wildl Med. 1999 Mar;30(1):32-5.

Pharmacokinetics of ceftazidime in loggerhead sea turtles (Caretta caretta) after single intravenous and intramuscular injections.

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Environmental Medicine Consortium, North Carolina State University, Raleigh 27606, USA.


The pharmacokinetics of ceftazidime in yearling loggerhead sea turtles (Caretta caretta) following single i.m and i.v. injections were studied. Eight juvenile 1.25+/-0.18 kg turtles were divided into two groups. Four animals received 20 mg/kg of ceftazidime i.v. and four received the same dose i.m. Plasma ceftazidime concentrations were analyzed by reverse-phase high-performance liquid chromatography. The i.v. and i.m. administration half-lives were 20.59+/-3.24 hr and 19.08+/-0.77 hr, respectively. The volume of distribution was 0.42+/-0.07 L/kg, and the systemic clearance was 0.217+/-0.005 ml/min/kg. Ceftazidime was detected in all blood samples and its concentration exceeded the minimum inhibitory concentration for Pseudomonas for 60 hr after i.m. and i.v. injections.

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