Ciprofloxacin pharmacokinetics in patients with cystic fibrosis
- 1 January 1986
- journal article
- research article
- Published by Springer Nature in Infection
- Vol. 14 (1) , 17-21
- https://doi.org/10.1007/bf01644804
Abstract
The pharmacokinetics of ciprofloxacin were studied in cystic fibrosis patients and healthy volunteers following oral administration of 500 mg and 1000 mg. Serum kinetics as well as urinary recovery were monitored. As the body weights of cystic fibrosis patients and the healthy volunteers differed significantly, kinetic parameters were calculated on the basis of a constant relative dose in mg/kg body weight. Neither serum kinetics nor urinary recovery differed significantly between the two groups, as indicated by the serum concentration versus time curves ranging from 1.1 to 1.4 mg × h/l, the elimination half-life of 4.4 to 5.1 h and the 24 h urinary recovery which amounted to 35% to 41% of the dose administered. Serum concentrations were linearly proportional to the doses administered. Sputum concentrations were monitored in cystic fibrosis patients. Again, ciprofloxacin sputum levels were linearly proportional to the doses and were within the same range as serum concentrations. Thus, ciprofloxacin kinetics are not altered in cystic fibrosis patients as compared to healthy volunteers. Die Ciprofloxacinkinetik wurde an Patienten mit zystischer Fibrose (CF) und gesunden Probanden nach oraler Gabe von 500 mg sowie 1000 mg untersucht. Die Serumkinetik und Harnwiederfindungsrate wurden bestimmt. Da das Körpergewicht der CF-Patienten einerseits und gesunden Probanden andererseits signifikant unterschiedlich ist, wurden die kinetischen Parameter auf der Basis einer konstanten relativen Dosis in mg/kg Körpergewicht berechnet. Weder die Serumkinetik noch Urinwiederfindungsrate waren in den beiden Gruppen signifikant unterschiedlich. Die standardisierte Fläche unter der Serumspiegel-versus Zeitkurve betrug 1,1 bis 1,4 mg × h/l, die Eliminationshalbwertszeit schwankte zwischen 4,4 und 5,1 h, und die 24-Std.-Harnwiederfindungsrate belief sich auf 35 bis 41% der verabreichten Dosis. Die Serumkonzentrationen waren linear proportional zu den verabreichten Dosen. Die Sputumkonzentrationen wurden in CF-Patienten bestimmt. Wiederum waren die Sputumkonzentrationen linear proportional zur verabreichten Dosis und lagen im gleichen Konzentrationsbereich wie auch die Serumkonzentrationen. Somit ist die Ciprofloxacinkinetik in CF-Patienten im Vergleich zu gesunden Probanden nicht verändert.Keywords
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