Doctors decided to "freeze" a newborn in order to save his life, whose heart rate was about 300 beats per minute, according to ABC.

Edward Ives was born with supraventricular tachycardia or SVT, and only had a 5% survival chance. SVT is caused by improper electrical impulses in the heart that leads to an irregular rapid heartbeat heart, which can then result in heart failure or affect internal organs. After doctors tried every routine practice they had in a book for a baby with SVT, including shocking the heart, and also treated him with different medications, doctors did an unexpected move.

According to ABC, doctors at the University College London Hospital were able to give Edward a chance at living by lowering his temperature to 91 degrees to "protect his vital organs and slow his heart rate."

"I thought I wasn't listening right or something," his mother, Claire Ives, told ABCNews.com. "I didn't believe his [heart] rate could be that fast."

When Claire was seven months pregnant with Edward, she used a handheld device to listen to her unborn son's heartbeat. As she turned the machine on, she knew something was wrong.

After doctors at the University College London Hospital were alerted to the baby's unusual heart rate, Claire delivered Edward, five weeks early via an emergency C-section.

"We'd gone through all the usual maneuvers that usually work in babies, giving drugs ... trying to shock the heart, the baby and get [a healthy heart rate back]," said Dr. Nicola Robertson, who works in the neonatal unit at the hospital.

Over a period of hours the doctors used a cold blanket to lower Edward's body temperature to approximately 91 degrees, which protected his organs and helped slow down the electrical circuit in his heart. The next day, Edward's temperature got warmer, but his heart began to race again. The group of medical professionals then decided to cool his body temperature again, three days after they had lowered it.

"It was really strange highs and lows because he was doing extremely poorly," said Claire. "But, oh, thank God! It worked."

Doctors then began to warm Edward, this time at a slower rate as they carefully raised his temperature only half a degree every 12 hours. This time, his heart rate remained stable.

Evan is now 6-months-old, and is still being monitored by the hospital. Doctors said he is doing great.