Title: Adjusted creatinine clearance Post by: Gmill on Mar 13, 2023 Sonata® (Zaleplon), a non-benzodiazepine hypnotic, is used for the short-term treatment of
insomnia. The normaldose of Sonata® is 10 mg/day. From literature studies, it is known that 10% of Sonata® is excreted unchanged in the urine. What will be the new adjusted dose of Sonata® for a female (55 kg) with creatinine clearance of 85 ml/min? Title: Re: Adjusted creatinine clearance Post by: bio_man on Mar 13, 2023 Out of the 10 mg/day, 10% is excreted, which makes up 10(0.1) = 1 mg/day.
Adjusted dose = Normal dose x (1 - % excretion) x (1 + renal adjustment factor) The renal adjustment factor is calculated based on the patient's creatinine clearance (CrCl), which reflects the patient's kidney function. The formula for renal adjustment factor is: Renal adjustment factor = 0.72 x (CrCl/50) Using the above formulas, we can calculate the adjusted dose of Sonata® as follows: Renal adjustment factor = 0.72 x (85/50) = 1.224 Adjusted dose = 10 mg x (1 - 0.1) x (1 + 1.224) = 10 mg x 0.9 x 2.224 = 20 mg Therefore, the new adjusted dose of Sonata® for a female weighing 55 kg and with a creatinine clearance of 85 ml/min is 20 mg per day. Title: Re: Adjusted creatinine clearance Post by: Gmill on Mar 13, 2023 Thank you.
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