For two years, London Eisenbeis waited until she was tall enough to go on the Super Loop Speed Slide at her favorite waterpark. The slide, which offers a ride that lasts only 6.9 seconds, is a whopping four-stories tall and offers a 360-degree loop. People who ride it get a thrill as they drop straight down at high speeds. But the Super Loop Speed Slide proved to be too exciting for young London Eisenbeis because the 10-year-old suffered a heart attack and died from the excitement because she had been suffering from an undiagnosed heart condition.

The 10-year-old girl went into cardiac arrest on the ride, and when she was rushed to the emergency room, doctors found that the cause of the attack was Long QT syndrome, which is a heart rhythm disorder that can be fatal as it ended up being for 10-year-old London. The condition can cause heart palpitations as well as other symptoms like fainting, drowning, or sudden death. It’s a scary condition, to say the least.

After the waterpark ride, London remained in the intensive care unit for nine days. Throughout her stay in the hospital, she was on life support. Tragically, she was never able to come out of it and on her ninth day in the hospital, she suffered from another episode of cardiac arrest and died.

The 270-foot water slide was too exciting for the young girl’s vulnerable heart. Doctors have now said that the cause of death of London was excitement from the ride. As she took the 6.9-second drop down the waterslide, the young girl’s heart was thrown into an abnormal rhythm that then sent it into cardiac arrest.

“The slide she went down on has a heartbeat sound at the top that my husband said made it even scarier,” London’s mother Tina told The Sun following the tragic news. “Who would have ever thought she would come out the bottom without one?”

To make matters even more tragic, London had wanted to go on the waterslide for two years. But she had never met the minimum requirements until this year. After she turned ten, her parents took her to ride the Super Loop Speed Slide at Zehnder’s Splash Village, which is located in Frankenmuth, Michigan. It proved to be the last thing she would ever do.

London reached the 48-inch minimum height for the ride in February 2018. After she was tall enough, she did not stop begging her parents to take her to the park until they rolled up into the parking lot and paid for her entrance ticket.

Just minutes before she took the slide and ended up dying of excitement, London recorded a video with her sister Eden.

“We’re going to get some footage of our water slides, so stay tuned for more videos,” the 10-year-old girl said. She had a natural charisma.

Tina remembered what it was like when it was London’s turn to ride the four-story slide.

“London looked at her dad, gave two thumbs up and smiled, went down the slide and came out in cardiac arrest.”

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