A Multiple-Dose Study of Oral Oseltamivir in Participants on Hemodialysis (HD) and Continuous Ambulatory Peritoneal Dialysis (CAPD)

Plasma samples were obtained up to 90 hours post-dose during the first dose analysis (Days 1 to 5), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in nanograms per milliliter (ng/mL).

Plasma samples were obtained up to 90 hours post-dose during the second dose analysis (Days 38 to 43), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 90 hours post-dose during the first dose analysis (Days 1 to 5), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 90 hours post-dose during the second dose analysis (Days 38 to 43), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 90 hours post-dose during the first dose analysis (Days 1 to 5), and the AUC was determined from 0 to 12 hours (AUC12) and up to the last measurable concentration (AUClast). Values were averaged among all participants and expressed in nanograms by hours per milliliter (ng*h/mL).

Plasma samples were obtained up to 90 hours post-dose during the second dose analysis (Days 38 to 43), and the AUC12 and AUClast were determined. Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 90 hours post-dose during the first dose analysis (Days 1 to 5), and the AUC was determined from 0 to 42 hours (AUC42) and up to the last measurable concentration (AUClast). Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 90 hours post-dose during the second dose analysis (Days 38 to 43), and the AUC42 and AUClast were determined. Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 168 hours post-dose during the second dose analysis (Days 36 to 43), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 168 hours post-dose during the second dose analysis (Days 36 to 43), and the maximum observed concentration was recorded. The Cmax was averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6), and the AUC12 and AUClast were determined. Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 168 hours post-dose during the second dose analysis (Days 36 to 43), and the AUC12 and AUClast were determined. Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6), and the AUC was determined from 0 to 48 hours (AUC48) and up to the last measurable concentration (AUClast). Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 168 hours post-dose during the second dose analysis (Days 36 to 43), and the AUC48 and AUClast were determined. Values were averaged among all participants and expressed in ng*h/mL.

Plasma samples were obtained up to 90 hours post-dose during the first dose analysis (Days 1 to 5) and up to 114 hours post-dose during the second dose analysis (Days 38 to 43). The concentration at each collection time was recorded and averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 90 hours post-dose during the first dose analysis (Days 1 to 5) and up to 114 hours post-dose during the second dose analysis (Days 38 to 43). The concentration at each collection time was recorded and averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 90 hours post-dose during the first (Days 1 to 5) and second (Days 38 to 43) dose analyses, and the observed time of maximum concentration was recorded. The Tmax following each dose was averaged among all participants and expressed in hours.

Plasma samples were obtained up to 90 hours post-dose during the first (Days 1 to 5) and second (Days 38 to 43) dose analyses, and the observed time of maximum concentration was recorded. The Tmax following each dose was averaged among all participants and expressed in hours.

Plasma samples up to 12 hours post-dose during the first (Days 1 to 5) and second (Days 38 to 43) dose analyses were used to calculate apparent clearance adjusted for oral bioavailability. The CL/F with each dose was averaged among all participants and expressed in liters per hour (L/h).

Plasma samples up to 42 hours post-dose during the first (Days 1 to 5) and second (Days 38 to 43) dose analyses were used to calculate apparent clearance adjusted for oral bioavailability. The CL/F with each dose was averaged among all participants and expressed in L/h.

Plasma and urine samples up to 12 hours post-dose during the first dose analysis (Days 1 to 5) were used to calculate CLr, computed as [amount of drug excreted divided by the AUC12]. The CLr was averaged among all participants and expressed in L/h.

Plasma and urine samples up to 42 hours post-dose during the first dose analysis (Days 1 to 5) were used to calculate CLr, computed as [amount of metabolite excreted divided by the AUC42]. The CLr was averaged among all participants and expressed in L/h.

Plasma samples up to 90 hours post-dose during the first (Days 1 to 5) and second (Days 38 to 43) dose analyses, in addition to dialyzer samples obtained on Days 3 and 40, were used to calculate CLd, computed as [amount of metabolite recovered in dialysate divided by the AUC over the dialysis interval]. The CLd with each dose was averaged among all participants and expressed in L/h.

Urine samples up to 42 hours post-dose during the first dose analysis (Days 1 to 5) were used to calculate drug excretion, computed as [amount of drug excreted divided by the oral oseltamivir dose] multiplied by 100. The value was averaged among all participants and expressed as a percent of the oseltamivir dose administered.

Urine samples up to 42 hours post-dose during the first dose analysis (Days 1 to 5) were used to calculate metabolite excretion, computed as [amount of metabolite excreted divided by the oral oseltamivir dose] multiplied by 100. The value was averaged among all participants and expressed as a percent of the oseltamivir dose administered.

Dialyzer samples were obtained up to 5 hours from the start of dialysis on Days 3 and 40 (corresponding to HD sessions 2 and 18). Arterial concentrations were estimated using the inflow to the dialyzer, and venous concentrations were estimated using the outflow from the dialyzer. The concentration at each collection time was recorded and averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6) and up to 168 hours post-dose during the second dose analysis (Days 36 to 43). The concentration at each collection time was recorded and averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 120 post-dose during the first dose analysis (Days 1 to 6) and up to 168 hours post-dose during the second dose analysis (Days 36 to 43). The concentration at each collection time was recorded and averaged among all participants and expressed in ng/mL.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6) and up to 168 hours post-dose during the second dose analysis (Days 36 to 43), and the observed time of maximum concentration was recorded. The Tmax following each dose was averaged among all participants and expressed in hours.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6) and up to 168 hours post-dose during the second dose analysis (Days 36 to 43), and the observed time of maximum concentration was recorded. The Tmax following each dose was averaged among all participants and expressed in hours.

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6) and up to 168 hours post-dose during the second dose analysis (Days 36 to 43). Urine and dialysate samples were also obtained up to 48 hours post-dose during the first dose analysis. The elimination rate constant was calculated as [natural log (ln)(2) divided by the half-life] and expressed as inverse hours (1/h).

Plasma samples were obtained up to 120 hours post-dose during the first dose analysis (Days 1 to 6) and up to 168 hours post-dose during the second dose analysis (Days 36 to 43). Urine and dialysate samples were also obtained up to 48 hours post-dose during the first dose analysis. The time required for the concentration to decrease by one-half was recorded and averaged among all participants and expressed in hours.

Plasma samples up to 12 hours post-dose during the first (Days 1 to 6) and second (Days 36 to 43) dose analyses were used to calculate apparent clearance adjusted for oral bioavailability. The CL/F with each dose was averaged among all participants and expressed in L/h.

Plasma samples up to 48 hours post-dose during the first (Days 1 to 6) and second (Days 36 to 43) dose analyses were used to calculate apparent clearance adjusted for oral bioavailability. The CL/F with each dose was averaged among all participants and expressed in L/h.

Plasma and urine samples up to 12 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate CLr, computed as [amount of drug excreted divided by the AUC12]. The CLr was averaged among all participants and expressed in L/h.

Plasma and urine samples up to 48 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate CLr, computed as [amount of metabolite excreted divided by the AUC48]. The CLr was averaged among all participants and expressed in L/h.

Plasma samples up to 120 hours and dialysate samples up to 48 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate CLd, computed as [amount of metabolite recovered in dialysate divided by the AUC over the dialysis interval]. The CLd was averaged among all participants and expressed in L/h.

Urine samples up to 48 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate renal excretion, computed as [amount of drug in urine divided by the oral oseltamivir dose] multiplied by 100. The value was averaged among all participants and expressed as a percent of the oseltamivir dose administered.

Urine samples up to 48 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate renal excretion, computed as [amount of metabolite in urine divided by the oral oseltamivir dose] multiplied by 100. The value was averaged among all participants and expressed as a percent of the oseltamivir dose administered.

Dialysate samples up to 48 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate dialysis elimination, computed as [amount of drug in dialysate divided by the oral oseltamivir dose] multiplied by 100. The value was averaged among all participants and expressed as a percent of the oseltamivir dose administered.

Dialysate samples up to 48 hours post-dose during the first dose analysis (Days 1 to 6) were used to calculate dialysis elimination, computed as [amount of metabolite in dialysate divided by the oral oseltamivir dose] multiplied by 100. The value was averaged among all participants and expressed as a percent of the oseltamivir dose administered.