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  2. Inappropriate sinus tachycardia - Wikipedia

    en.wikipedia.org/.../Inappropriate_sinus_tachycardia

    Inappropriate sinus tachycardia, defined as 24-hour average HR > 90 bpm and HR > 100 bpm in a supine or sitting position, has a prevalence of 1.16% in the general population. [20] The epidemiology of Inappropriate sinus tachycardia is not well understood. IST can occur at any age, but it is most common in adolescents and young adults. [2]

  3. Postural orthostatic tachycardia syndrome - Wikipedia

    en.wikipedia.org/wiki/Postural_orthostatic...

    Postural orthostatic tachycardia syndrome (POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. [1] POTS is a disorder of the autonomic nervous system that can lead to a variety of symptoms, [10] including lightheadedness, brain fog, blurred vision, weakness, fatigue, headaches, heart palpitations, exercise intolerance, nausea ...

  4. Tachycardia - Wikipedia

    en.wikipedia.org/wiki/Tachycardia

    Tachycardia, also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate. [1] In general, a resting heart rate over 100 beats per minute is accepted as tachycardia in adults. [1] Heart rates above the resting rate may be normal (such as with exercise) or abnormal (such as with electrical problems within the heart).

  5. Your risk of this debilitating heart condition goes up after ...

    www.aol.com/risk-debilitating-heart-condition...

    The condition, POTS (postural orthostatic tachycardia syndrome), is a nervous system disorder that causes a person’s heart to rapidly race in the 10 minutes after standing up, according to Johns ...

  6. Christina Applegate's Daughter, 13, Diagnosed With POTS ... - AOL

    www.aol.com/christina-applegates-daughter-13...

    The 52-year-old and her 13-year-old daughter revealed on the latest episode of Christina's MeSsy podcast that Sadie was recently diagnosed with postural orthostatic tachycardia syndrome (POTS).

  7. Katie Ledecky opens up about POTS diagnosis and how she ... - AOL

    www.aol.com/news/katie-ledecky-opens-pots...

    Postural orthostatic tachycardia syndrome (POTS) is a disorder of the autonomic nervous system, which controls body functions we often don’t think about, such as heart rate and blood pressure ...

  8. Sinus tachycardia - Wikipedia

    en.wikipedia.org/wiki/Sinus_tachycardia

    Sinus tachycardia is a sinus rhythm of the heart, with an increased rate of electrical discharge from the sinoatrial node, resulting in a tachycardia, a heart rate that is higher than the upper limit of normal (90-100 beats per minute for adult humans).

  9. Sinus node dysfunction - Wikipedia

    en.wikipedia.org/wiki/Sinus_node_dysfunction

    Sinus node dysfunction (SND), also known as sick sinus syndrome (SSS), is a group of abnormal heart rhythms (arrhythmias) usually caused by a malfunction of the sinus node, the heart's primary pacemaker. [1] [2] Tachycardia-bradycardia syndrome is a variant of sick sinus syndrome in which the arrhythmia alternates between fast and slow heart ...