What question did this study set out to answer?

To document the case of a young chimpanzee that experienced sudden death attributed to a congenital heart defect.

March 16, 2026Open Access

Sudden Death of a 17‐Month‐Old Chimpanzee ( Pan troglodytes ) due to a Congenital Undiagnosed Ventricular Septal Defect

IKIvanela KondovaBiomedical Primate Research Centre MLMerel LangelaarBiomedical Primate Research Centre ARArno A W RoestLeiden University Medical Center

Key Points

To document the case of a young chimpanzee that experienced sudden death attributed to a congenital heart defect.
Conducted a necropsy on the infant chimpanzee
Examined the heart structure for abnormalities
Identified a ventricular septal defect (VSD) during heart examination
Observed dilatation of the left ventricle
Noted myocardial hypertrophy in the right ventricle

Abstract

Ventricular septal defect (VSD) is a congenital defect that is frequently observed in humans. We report the sudden death of an infant chimpanzee due to a congenital undiagnosed VSD. During necropsy, the examination of the heart revealed a VSD, dilatation of the left ventricle and myocardial hypertrophy of the right ventricle.

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