Dr Barreiro attended the School of Medicine, University of the Republic, Uruguay and became a Doctor of Medicine in 1979. Specialist in Anaesthesiology: 1982 Specialist in Intensive Care Medicine: 1986. Associate Professor of Anaesthesiology (Grade 4) since 1992. Anaesthesiology Director of the National Burn Centre: 1992 - 2000. Anaesthesiology Director, Unidad Nacional Cirugía Ortopédica, Sanatorio Americano (FEMI Montevideo), since 1999. Anaesthesiology Director, Centro Cardiológico, Sanatorio Americano (FEMI Montevideo) since 2007. He has supported the WFSA for many years, as a member of the Safety Committee 1992-2000 and a Member of the Executive Committee 2000-2008. He then served as Assistant Secretary 2008-2012, and Secretary 2012-2016.
Anaesthesiology