Canadian Journal of Cardiology


Published:January 13, 2023DOI:
      John Tyberg was born in Grantsburg, WI, USA on May 4, 1938. He died in Calgary, Alberta, Canada on April 10, 2022 after a brief illness. John obtained a PhD in 1967 and an MD in 1972, both from the University of Minnesota, and did post-doctoral studies at Harvard and Peter Bent Brigham Hospital. He subsequently worked at the Cedars-Sinai Medical Centre in Los Angeles and the Cardiovascular Research Institute at the University of California (San Francisco), before moving to the University of Calgary in 1981 as Professor in the Departments of Cardiac Sciences and Physiology & Biophysics. He was subsequently appointed as a Scientist of the Alberta Heritage Foundation for Medical Research, an appointment he held for more than 20 years. He is survived by his wife, Dr. Naomi Anderson, his daughter Anna de Tombe, two grandsons, Philip and Jack de Tombe (of whom he was very proud) and two brothers, Rodney and James Tyberg. John was a quiet, humble man who obtained great joy from mentoring his students and Fellows, and from his love for literature, history and music.
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      1. Tyberg JV, Misbach GA, Glantz SA, et al. A mechanism for shifts in the diastolic, left ventricular, pressure-volume curve: the role of the pericardium. Eur J Cardiol. 1978; Jun (7) Suppl:163-175.

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        A mechanism for the nitroglycerin-induced downward shift of the left ventricular pressure-diameter relationship in patients.
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        Effects of diastolic transeptal pressure gradient on ventricular septal position and motion.
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        The case for the reservoir-wave approach.
        Int J Cardiol. 2014; 172: 299-306