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Bile levels of imipenem in patients with t-drain following the administration of Imipenem/Cilastatin

Imipenem Gallenspiegel bei Patienten mit T-Drain nach Applikation von Imipenem/Cilastatin

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Summary

Twenty-four patients undergoing gall bladder surgery and placement of a Kehr T-tube were examined for imipenem pharmacokinetics in plasma and bile fluid following an intravenous short-term infusion (20 min) of 500 mg respectively 1000 mg each of imipenem and cilastatin. In group I (500 mg; 12 patients) a mean peak concentration in bile fluid of 10.5 mg/l (range 1.5 to 16.7 mg/l) was reached just after 10 min. 60 min after the end of infusion the imipenem concentration was between 8 and 9 mg/l. In group I the half-life of imipenem in bile was 0.84 h. In group II (1000 mg; 12 patients) the mean peak level in bile fluid was 17.5 mg/l (range 3.5 to 51.3 mg/l). The half-life in bile was 1.24 h in this group. The data indicated that 4 h after the administration of either 1000 mg or 500 mg, imipenem serum and bile concentrations were markedly above the MIC values for pathogens expected to be found in infections of the biliary tract.

Zusammenfassung

Bei 24 Patienten wurden nach einer Gallenblasenoperation und Einlegen eines Kehr-T-Drains in den Gallengang die pharmakokinetischen Daten für Imipenem/Cilastatin in Plasma und Galle-Flüssigkeit nach Kurzzeitinfusion (20 min) von je 500 mg oder 1000 mg Imipenem und Cilastatin bestimmt. In einer Gruppe I (12 Patienten) wurden 500 mg Imipenem verabreicht. Die höchste Konzentration wurde nach 10 min mit 10,5 mg/l (1,5–16,7 mg/l) in der Gallenflüssigkeit erreicht. 60 min nach Beendigung der Kurzzeit-Infusion wurde eine Konzentration von 8–9 mg/l bestimmt. Die Halbwertszeit für Imipenem in der Galle betrug 0,84 h. In der Gruppe II (12 Patienten) wurden 1000 mg Imipenem verabreicht. Die Spitzenkonzentrationen für Galle betrugen 17,5 mg/l (3,5–51,3 mg/l). Die Halbwertszeit in dieser Gruppe betrug 1,24 h. Die Ergebnisse zeigen, daß noch 4 h nach Verabreichung von je 1000 mg oder 500 mg Imipenem und Cilastatin sowohl Plasma- als auch Gallenspiegel von Imipenem deutlich über den MHK-Werten der Bakterien liegen, die als Ursache von Gallengangsinfektionen bekannt sind.

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Mayer, M., Tophof, C. & Opferkuch, W. Bile levels of imipenem in patients with t-drain following the administration of Imipenem/Cilastatin. Infection 16, 225–228 (1988). https://doi.org/10.1007/BF01650757

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