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What is Inappropriate Sinus Tachycardia

Inappropriate Sinus Tachycardia description. Find out what Inappropriate Sinus Tachycardia is and know more about it.

What is Inappropriate Sinus Tachycardia

Inappropriate Sinus Tachycardia (IST) is a condition characterized by an abnormally fast heart rate originating from the sinus node, the natural pacemaker of the heart. Unlike normal sinus tachycardia, which occurs in response to physical activity or stress, IST is unrelated to external factors and can occur at rest.


Symptoms: Individuals with IST may experience palpitations, rapid heartbeat, shortness of breath, dizziness, fatigue, and chest discomfort. These symptoms can significantly impact a person's quality of life.


Causes: The exact cause of IST is unknown, but it is believed to result from dysfunction in the autonomic nervous system, which regulates heart rate. It may also be associated with certain medical conditions or medications.


Diagnosis: Diagnosis of IST involves a thorough evaluation of symptoms, medical history, and physical examination. Additional tests such as electrocardiogram (ECG), Holter monitoring, and exercise stress tests may be conducted to confirm the diagnosis.


Treatment: Managing IST typically involves a combination of lifestyle modifications and medications. Lifestyle changes may include avoiding triggers like caffeine and stress, maintaining a regular sleep schedule, and engaging in relaxation techniques. Medications such as beta-blockers or calcium channel blockers may be prescribed to control heart rate and alleviate symptoms.


It is important for individuals experiencing symptoms of IST to consult with a healthcare professional for an accurate diagnosis and appropriate treatment plan.


Diseasemaps
3 answers
A consistantly high heart rate for no good reason. There are many things that increase heart rate which would be appropriate but with IST the heart rate is just increased without any reason.

Posted May 22, 2018 by Sara 2550
Permanent and excessive sinus tachycardia at minimum effort, without any obvious cause

Posted Feb 2, 2019 by npb 1400

What is Inappropriate Sinus Tachycardia

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World map of Inappropriate Sinus Tachycardia

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Stories of Inappropriate Sinus Tachycardia

INAPPROPRIATE SINUS TACHYCARDIA STORIES
Inappropriate Sinus Tachycardia stories
- Got diagnosed in 2013, after a year of having bad symptoms. Have been taking Metroprolol, Bisoprolol, Ivabradine, Verapamil and Tambocor. All of them didn't work and I got side-effects of them. - First ablation: October 2014. They ablated the sinu...
Inappropriate Sinus Tachycardia stories
Years ago I was diagnosed with autonomic and peripheral neuropathy, my autonomic symptoms were extremely mild and only effected my eyes and stomach...nothing cardiac.  November 2014 I was in a 3 car pile up, I was the marshmallow per se in the smor...
Inappropriate Sinus Tachycardia stories
One night I was sleeping and after two hours of sleeping I woke up with a very intense fatigue on the left side and I got up very desperately, then I started to have tachycardia that reached up to 124 beats per minute, and symptoms such as difficulty...
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On 1st November 2014, I was cycling to work in the evening. I reached a downhill stretch and naturally stopped pedaling and allowed the bicycle to do the work. The next thing I remember, is that I was waking up on the side of the road, my bicycle a b...

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