Paxton suffered a stroke almost two weeks after undergoing heart surgery to fix an aortic aneurysm (an abnormal bulge in the blood vessel wall) and replace his bicuspid aortic valve, which lets blood flow from the left atrium to the left ventricle.
Paxton's family said that the inexperience of the surgeon and the misrepresentation of the risks contributed to the actor's post-surgery complications.
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".
This required Paxton to undergo another emergency surgery to fix the damage, but his condition worsened over the course of the next 10 days until the actor eventually died of a stroke. "That's one of the classic surgery risks and something that should be part of any conversation with a patient before a surgery", the report said. The family alleges that Paxtons doctor recommended an unconventional surgery without explaining the risks.
Paxton had suffered from heart problems since childhood when he suffered from rheumatic fever, a disease that is known to cause heart valve disease. And that "continuous care and coverage" was not provided during the time that the doctor was away from the patient.
According to the family, Khoynezhad had already left the operating room, which created a delay in treating the damage. They have two children: actor James Paxton and daughter Lydia.
In a press release, which was issued along with the suit, attorney Steve Heimberg also revealed that Khoynezhad left Cedars-Sinai Medical Center shortly after Paxton's unexpected passing.
The actor, born in Fort Worth, Texas, was starring in U.S. broadcaster CBS's Training Day series when he died.