Donda West's operation lasted 8 hours, twice as long as it should have, and she was then sent home instead of going into a recovery center, according to TMZ.com. Dr. Jan Adams—who says he performed a tummy tuck and breast reduction on Kanye’s mother before she died—says he's not to blame, but that West may have died from a heart attack, pulmonary embolism, or massive vomiting. Dr. Andre Aboolian, a Beverly Hills plastic surgeon, said he warned Donda West against getting cosmetic surgery because he was worried about a pre-existing condition she had. He told her she needed to get a medical clearance before he would operate, but never heard back from her. The death of the hip-hop superstar's mother raises new questions about the risks of plastic surgery. For more information, click here.