Cidofovir is an acyclic nucleotide analog with broad-spectrum antiviral activity against herpesviruses. Its potency in inhibiting HCMV has been shown in conventional in vitro studies. It is approved for the systemic treatment of human cytomegalovirus (HCMV) retinitis in patients with AIDS and as a second line therapy for HCMV infections not responding to ganciclovir or foscarnet. In intensive care patients continuous venovenous haemofiltration (CVVH) is a well-established extracorporal renal replacement therapy with a high clearance rate. Pharmacokinetic studies of antifungal agents in critically ill patients treated with CVVH are rare. Elimination of any given drug by renal replacement therapy is determined by several major factors which are membrane specific, due to physico-chemical properties of the drug and characteristics of the renal replacement technique used. Study objective The trial is conducted to investigate the pharmacokinetics of cidofovir during CVVH in critically ill patients. It is suspected that Hemofiltration will influence cidofovir plasma levels.
Study Type
INTERVENTIONAL
Allocation
NA
Masking
NONE
Enrollment
1
Blood samples were drawn before and 15, 30, 60, 120, 240, 360, 720 and 1440 minutes after the start of the cidofovir infusion. Plasma and ultrafiltration samples were collected from the outlet of the ultrafiltrate compartment of the hemofilter.
Medical University of Vienna
Vienna, Austria
AreaUnderCurve (AUC)
AUC (plasma concentration) of cidofovir during 24 hours of hemofiltration
Time frame: 24 hours
half-life (t1/2) of cidofovir during hemofiltration
Time frame: 24 hours
maximum and minimum plasma concentration (Cmax, Cmin) of cidofovir during hemofiltration
Time frame: 24 hours
total body clearance (Cltot) of cidofovir during hemofiltration
Time frame: 24 hours
hemofiltration clearance (ClHF) of cidofovir during hemofiltration
Time frame: 24 hours
sieving coefficient of cidofovir during hemofiltration
Time frame: 24 hours
elimination fraction of cidofovir during hemofiltration
Time frame: 24 hours
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