A UK hospital is investigating a patient's death after the UK's first robot-assisted heart valve surgery. The pioneering robot-assisted operation ended in catastrophe, with a cascade of failures causing the death of retired conductor Stephen Pettitt at Freeman Hospital in Newcastle. Lead surgeon Sukumaran Nair and his assistant could hardly hear each other due to a ‘tinny’ sound emanating from the robot console Nair was operating. He had to shout to warn his colleague that the robot was stitching up the valve incorrectly - and then shout again when he saw the robot knock one of the surgical assistants' arms. The patient's aorta was damaged. As events spiralled out of control, the two robotics experts who should have been on hand to take over in a crisis could not be found, having already gone home. The surgeons abandoned the robot and began open chest surgery, but by this point the patient’s heart was functioning ‘very poorly’. He died days later of multiple organ failure. The coroner said it was ‘more likely than not’ that the patient would have survived conventional open-heart surgery.