“Andre Faria1* AJ Hirsch Allen2* Nurit Fox2* Najib Ayas2* Ismail Laher3* 1 Universidade Federal de Minas Gerais Faculdade Medicina - Pampulha Belo Horizonte Brazil. 2 University of British Columbia Department Medicine Faculty Medicine Vancouver Columbia Canada. 3 Anesthesiology Pharmacology & Therapeutics 'Columbia Canada.“