He was educated at Street Peter"s College of which he was Dux in 1946 and 1947. He gained the degrees of Bachelor of Dental Surgery (Otago) (1953), Bachelor of Medical Science (Otago) (1960) and Bachelor of and Bachelor of Surgery (with distinction in Physiology) (Otago) (1961).
Trubuhovich, who is of Dalmatian parentage, spent his childhood in Auckland. He gained a Nuffield Dominion Scholarship to Oxford University in 1964 and completed a research Master of Science there. His specialist qualifications include FFARCS, FANZCA and FCICMANZ. He headed the intensive or critical care services in Auckland at Auckland Hospital being Chairman of the Department of Critical Care, Auckland Hospital into the 1990s.
He was President of the Australian and New Zealand Intensive Care Society (1981-1982), inaugural Vice-Dean of the Faculty of Intensive Care, Australian & New Zealand College of Anaesthetists (1993-1996), President of the Auckland Medical History Society (2008-2009).
He is a published author on medical history (resuscitation and intensive care medicine).
