a placebo-controlled study, 10 healthy subjects were given oral triazolam 0.5 mg before and after rifampicin 600 mg daily for 5 days. Rifampicin reduced the triazolam AUC by 95% and decreased its maximum plasma levels by 88%, when compared with placebo. The elimination half- life was reduced from 2.8 hours to 1.3 hours. Pharmacodynamic tests (drowsiness, sway, Maddox wing, etc.) showed that rifampicin abolished the effects of triazolam. a) Why is the AUC of triazolam reduced in the presence of rifampicin? b) Given the above scenario, if you were to accommodate this situation by dosage adjustment strategies, in the presence rifampicin what dose of triazolam would you have recommended, keeping dosage interval the same as when there was no rifampicin? answer part b

a placebo-controlled study, 10 healthy subjects were given oral triazolam 0.5 mg before and after rifampicin 600 mg daily for 5 days. Rifampicin reduced the triazolam AUC by 95% and decreased its maximum plasma levels by 88%, when compared with placebo. The elimination half- life was reduced from 2.8 hours to 1.3 hours. Pharmacodynamic tests (drowsiness, sway, Maddox wing, etc.) showed that rifampicin abolished the effects of triazolam. a) Why is the AUC of triazolam reduced in the presence of rifampicin? b) Given the above scenario, if you were to accommodate this situation by dosage adjustment strategies, in the presence rifampicin what dose of triazolam would you have recommended, keeping dosage interval the same as when there was no rifampicin? answer part b

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter16: Adult And Pediatric Dosages Based On Body Surface Area

Section: Chapter Questions

Problem 4.5P

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