Mike Leblanc believed doctors were doing all they could to help his wife Deanna.

On March 2, 2014, she was hooked up to a ventilator, unresponsive and doctors were concerned she had suffered brain damage.

Leblanc told the court on Friday that he didn't realize his wife was on life support until a conversation with nurse Joanna Flynn. Flynn was the evening nurse in the intensive care unit at Georgian Bay General Hospital.

He testified that Flynn said, "My wife was brain dead. She wasn't coming back. That’s just her body. She was already dead.”

"Her [Deanna's] heart was racing" from the medication and that "it would explode."

Leblanc testified Flynn told the same news to his family waiting in a room outside the ICU.

"She could disconnect her, shut the machine off and that Deanna could go peacefully," adding that Flynn said she and her husband would do the same if they were on life support.

Leblanc testified that he didn't know what to do and eventually gave Flynn permission to turn the machine off.

"I didn't think I had much of a choice."

Leblanc said a doctor wasn't present when the conversations with Flynn happened and when she shut off Deanna's life support machine.

Leblanc added that he was upset and shocked because a doctor in the intensive care unit had just told him he was going take a sample from the knee Deanna had surgery on two days prior.

Leblanc took that as an indication that doctors were still trying to figure out what was wrong. 

The Crown argues Flynn had no authorization to shut off the life support machine and overstepped her role as a nurse by doing so without a doctor's order.

Flynn is charged with manslaughter and criminal negligence causing death.