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Plasma Exogenous Creatinine Clearance Test in Dogs: Comparison with Other Methods and Proposed Limited Sampling Strategy

Identifieur interne : 00B391 ( Main/Exploration ); précédent : 00B390; suivant : 00B392

Plasma Exogenous Creatinine Clearance Test in Dogs: Comparison with Other Methods and Proposed Limited Sampling Strategy

Auteurs : A. D. J. Watson [Australie] ; Hervé P. Lefebvre [France] ; Didier Concordet [France] ; Valérie Laroute [France] ; Jean-Pierre Ferré [France] ; Jean-Pierre Braun [France] ; Fabrice Conchou [France] ; Pierre-Louis Toutain [France]

Source :

RBID : ISTEX:8D5234D10922FD831A68F12A4F4EF81386BB838B

English descriptors

Abstract

Plasma clearance of creatinine was evaluated for assessment of glomerular nitration rate (GFR) in dogs. In 6 healthy dogs (Experiment 1), we determined 24‐hour urine clearance of endogenous creatinine, plasma, and urine clearances of exogenous creatinine administered at 40, 80, and 160 mg/kg in a crossover design (linearity study), plasma iothalamate clearance, and plasma and urine clearances of 14C‐inulin. In Experiment 2, plasma creatinine and iothalamate clearances were compared, and a linearity study was performed as for Experiment 1 in 6 dogs with surgically induced renal impairment. Experiment 3 compared plasma creatinine clearance with plasma iothalamate clearance before and 3 weeks after induction of moderate renal impairment in 6 dogs. Plasma creatinine clearances were calculated by both noncompartmental and compartmental analyses. In Experiment 1, plasma inulin clearance was higher (P < .001) than other clearance values. Plasma creatinine clearances at the 3 dose rates did not differ from urine inulin clearance and each other. In Experiment 2, plasma creatinine clearances were about 14% lower than plasma iothalamate clearance (P < .05). In Experiment 3, decreases in GFR assessed by plasma clearances of iothalamate and creatinine were similar. Renal failure decreased the daily endogenous input rate of creatinine by 25%. Limiting sampling strategies for optimizing GFR calculation were proposed, allowing an error lower than 6.5% with 4 blood samples. These results suggest that determination of plasma creatinine clearance by a noncompartmental approach offers a reliable, inexpensive, rapid, and convenient means of estimating GFR in routine practice.

Url:
DOI: 10.1111/j.1939-1676.2002.tb01603.x


Affiliations:


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Le document en format XML

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<term>Clearance</term>
<term>Compartmental</term>
<term>Creatine</term>
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<term>Endogenous</term>
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<term>Urine clearance</term>
<term>Urine clearances</term>
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<div type="abstract" xml:lang="en">Plasma clearance of creatinine was evaluated for assessment of glomerular nitration rate (GFR) in dogs. In 6 healthy dogs (Experiment 1), we determined 24‐hour urine clearance of endogenous creatinine, plasma, and urine clearances of exogenous creatinine administered at 40, 80, and 160 mg/kg in a crossover design (linearity study), plasma iothalamate clearance, and plasma and urine clearances of 14C‐inulin. In Experiment 2, plasma creatinine and iothalamate clearances were compared, and a linearity study was performed as for Experiment 1 in 6 dogs with surgically induced renal impairment. Experiment 3 compared plasma creatinine clearance with plasma iothalamate clearance before and 3 weeks after induction of moderate renal impairment in 6 dogs. Plasma creatinine clearances were calculated by both noncompartmental and compartmental analyses. In Experiment 1, plasma inulin clearance was higher (P < .001) than other clearance values. Plasma creatinine clearances at the 3 dose rates did not differ from urine inulin clearance and each other. In Experiment 2, plasma creatinine clearances were about 14% lower than plasma iothalamate clearance (P < .05). In Experiment 3, decreases in GFR assessed by plasma clearances of iothalamate and creatinine were similar. Renal failure decreased the daily endogenous input rate of creatinine by 25%. Limiting sampling strategies for optimizing GFR calculation were proposed, allowing an error lower than 6.5% with 4 blood samples. These results suggest that determination of plasma creatinine clearance by a noncompartmental approach offers a reliable, inexpensive, rapid, and convenient means of estimating GFR in routine practice.</div>
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<name sortKey="Ferre, Jean Ierre" sort="Ferre, Jean Ierre" uniqKey="Ferre J" first="Jean-Pierre" last="Ferré">Jean-Pierre Ferré</name>
<name sortKey="Laroute, Valerie" sort="Laroute, Valerie" uniqKey="Laroute V" first="Valérie" last="Laroute">Valérie Laroute</name>
<name sortKey="Toutain, Pierre Ouis" sort="Toutain, Pierre Ouis" uniqKey="Toutain P" first="Pierre-Louis" last="Toutain">Pierre-Louis Toutain</name>
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