(NEXSTAR) – Renowned primatologist Jane Goodall, who passed away earlier this month at the age of 91, had suffered cardiopulmonary arrest, according to a death certificate obtained by TMZ.

Epilepsy was also listed as one of Goodall's conditions, though it's not clear if it contributed to her death, according to an image of the death certificate published by the outlet. No autopsy was performed.

Cardiopulmonary arrest, or cardiac arrest, is a sudden loss of heart function that leaves the body’s organs unable to receive oxygenated blood. A cardiac arrest is usually fatal, with only about 1 in 10 people surviving an event that occurs outside of a hospital setting, and about 1 in 4 surviving an event that takes place within a hospital, according to Cleveland Clinic.

Goodall’s death was init

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