Increased Glomerular Filtration Rate in Patients with Major Burns and Its Effect on the Pharmacokinetics of Tobramycin

Abstract
The clearance of endogenous creatinine in 20 burned patients, measured between the fourth and the 35th post-burn day, was a mean (± S.D.) of 172.1 ±48.4 ml per minute per 1.73 m2; in eight normal subjects the mean value was 125.4±10.4 (P<0.02). Thirteen patients had values more than 2 S.D. above the normal mean. We confirmed this rise in glomerular filtration rate by measuring inulin or iothalamate clearance in nine patients.