Now his family has filed a wrongful death lawsuit against Cedars-Sinai Medical Center and the doctor who operated on Paxton, claiming that his death could have been prevented.
Paxton, one of Hollywood's most popular actors with such credits as Twister and Big Love, was 61 when he died following a stroke last February 25, 11 days after the heart surgery to replace an aortic valve and fix an aortic aneurysm.
The actor suffered a stroke just 11 days following the procedure and passed away, and his family is now suing Cedars-Sinai Medical Center and the surgeon for wrongful death. The doctor who performed the surgery, Ali Khoynezhad, is named in the lawsuit along with the hospital for failing "to adequately protect Mr. Paxton".
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The complaint notes that Khoynezhad deliberately performed the "unnecessary" heart surgery on Paxton and the surgeon, the hospital, as well as other staff members "acted negligently and/or recklessly and provided harmful and/or offensive management and treatment of (Paxton) thereby causing his death".
Paxton's death certificate officially lists his cause of death as stroke after heart surgery.
Cedars-Sinai Medical Centre is yet to respond to a request for comment and Dr Khoynezhad did not immediately reply to an after-hours message.
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Paxton is survived by his wife of 30 years, Louise Paxton and their two children, James and Lydia.
The suit filed on February 9 against Cedars-Sinai Medical Center alleges the surgeon used a "high risk and unconventional surgical approach" that was unnecessary and that he lacked the experience to perform.
In the statement, the hospital said that according to state and federal laws, they are not permitted to share details about patients without authorization in writing but noted that the health and safety of its patients is their utmost priority.
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Furthermore, they say Khoynezhad neglected to provide continuing care after he left and caused a delay in treatment and further cardiac damage by not returning to the OR after being notified of what was happening to Paxton. He was also known for the TV series "Big Love" and "Training Day", the latter of which he was starring in when he died.