The patient underwent a cerebral angiogram to locate a suspected aneurism.
During the procedure, she experienced discomfort, hyperventilated, and asked the doctors to stop.
After calming down, she was asked if she wished the test completed and she consented.
Following the final injection, she suffered a rare reaction rendering her a quadriplegic.
The Supreme Court of Canada held that while a patient may withdraw consent during a procedure, the patient here had validly consented to its continuation.
The doctors were not required to repeat the full disclosure of risks because there had been no material change in circumstances.