Katie Waissel is wearing a cardiac monitor after being taken to hospital with a "life threatening emergency" - which was believed to be a heart attack.
Two weeks ago Katie told fans: "Let me tell you, I was taken by ambulance yesterday for a suspected heart attack and @ nhs @ldn_ambulance Watford general AND the ambulance services were / are amazing."
In her latest social media post the mum-of-one has shared a picture of herself wearing a heart monitor, which comes with electrode pads, which can be seen stuck to Katie's torso.
She captioned the post on Instagram : “Currently wearing the Holter Monitor as part of my ongoing cardiac testing.
"I will be wearing this device for 48 hours as it records my heart activity."
The Holter monitor is a type of portable electrocardiogram (ECG), which It records the electrical activity of the heart.
Katie added:“Other testing follows this week, but emotionally, I am taking them just one test at a time.
"Please do know that albeit this is a personal medical issue, I have listened and onboarded so compassionately to your questions and concerns relating to potential causes etc.
"I want you to know that I absolutely intend to share my findings with you and hope to either give you clarity or peace of mind, to those that are seeking it."
Katie's post was met with an outpouring of support from her fans.
One wrote: "Amazing how transparent you are being. You don't owe anyone anything, but the fact you are sharing this journey is hugely appreciated."
While another said: "Horrible to hear you’ve experienced a suspected heart attack and hope you get the answers and results soon! All the luck and love."
When sharing the news of her hospital dash Katie said: "It’s important to ask that as we investigate what happened and why medically, kindly try not to speculate or be afraid.
"I will provide more information later.
"But for now, I must listen to my body and take care of it. I’ve still got plenty of the good fights to fight!"
The 35-year-old made it onto the live shows on the X Factor in 2010 and was rumoured to be joining Jay Z's record label - however the deal never materialised.
Katie now works as a health and fitness specialist and mental health campaigner.
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