Diane Ladd's cause of death revealed two weeks after she died at 89

A cause of death has been released for Diane Ladd, the Oscar-nominated actress and mother of fellow actress Laura Dern.

Ladd, who was 89 at the time of her Nov. 3 death, died of "acute on chronic hypoxic respiratory failure," according to a death certificate obtained by People magazine.

According to the Cleveland Clinic, respiratory failure is a condition when "there's not enough oxygen or too much carbon dioxide" in a person's body. The health issue can occur acutely (all at once) or chronically (gradually over time).

USA TODAY has reached out to representatives for Ladd and Dern for comment.

Ladd had been suffering from interstitial lung disease in the years leading up to her death, the actress's death certificate noted, per People. Additionally, esophageal dysmotility, a type of digestive disorder, was listed as a significant contributing condition to her death.