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Life in the Fast Lane • LITFL • Medical Blog

Emergency medicine and critical care medical education blog

Critical Care Compendium | Bosentan

Bosentan

by Chris Nickson, Last updated December 19, 2012

Class

  • dual endothelin receptor antagonist

Mechanism of Action

  • competitive antagonism of endothelin-1 (pulmonary vasoconstrictor) at the endothelin receptors -> decreases PVR

Pharmaceutics

  • tablet

Dose

  • 62.5mg BD -> increased monthly

Indications

(1) severe PHT
(2) scleroderma with digital ulcers

Adverse Effects

  • liver injury
  • teratogenicity

PK

  • Absorption – bioavailability = 50%
  • Distribution – protein binding 98%
  • Metabolism – hepatic
  • Elimination – t ½ = 5 hrs

Evidence

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About Chris Nickson

FCICM FACEM BSc(Hons) BHB MBChB MClinEpid(ClinTox) DipPaeds DTM&H GCertClinSim

Chris is an Intensivist at the Alfred ICU in Melbourne and is an Adjunct Clinical Associate Professor at Monash University. He is also the Innovation Lead for the Australian Centre for Health Innovation and the Chair of the Australian and New Zealand Intensive Care Society (ANZICS) Education Committee. He has a passion for helping clinicians learn and for improving the clinical performance of individuals and collectives. After finishing his medical degree at the University of Auckland, he continued post-graduate training in New Zealand as well as Australia's Northern Territory, Perth and Melbourne. He has since completed further training in emergency medicine, clinical toxicology, clinical epidemiology and health professional education. He coordinates the Alfred ICU's education and simulation programmes and runs the unit’s education website, INTENSIVE. He created the 'Critically Ill Airway' course and teaches on numerous courses around the world. He is one of the founders of the FOAM movement (Free Open-Access Medical education) and is co-creator of Lifeinthefastlane.com, the RAGE podcast, the Resuscitology course, and the SMACC conference. His one great achievement is being the father of two amazing children. On Twitter, he is @precordialthump.

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