Broken heart syndrome, also called stress-induced cardiomyopathy, typically occurs after a physically or emotionally traumatic event and mimics symptoms of a heart attack.
Moore was considered the front runner in the best actress race leading up to Sunday's ceremony — but was left "heartbroken" after the loss, we're told.
Baldwin and Basinger split in 2002 after nearly 20 years of marriage. However, they didn't finalize their divorce for seven years due to custody disagreements.