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  1. 2023年12月9日 · Postural orthostatic tachycardia syndrome (POTS) is a disorder in which most of your blood stays in your lower body when you stand up, and in response, your heart rate jumps. Your blood usually...

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  2. 2023年8月22日 · Sometimes an irregular heart rhythm, called an arrhythmia, causes palpitations. Atrial fibrillation, or AFib, happens when the heart's upper chambers, called the atria, flutter instead of beating...

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  3. 2022年8月20日 · Atrial fibrillation ( AFib) is a type of irregular heartbeat. If you have it, your doctor will classify yours by the reason for it and on how long it lasts. When your heartbeat returns to normal...

  4. 2022年8月28日 · What Makes You Faint? Medically Reviewed by Carol DerSarkissian, MD on August 28, 2022. Written by Paul Frysh. You're Dehydrated. 1 /15. Dehydration can happen if you don't drink enough or you...

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  5. 2023年12月3日 · Aspiration is when something enters your airway or lungs. It can also happen when something goes back into your throat from your stomach. Learn more about the symptoms, causes, risk factors ...

  6. 2022年12月8日 · Vertigo is a sensation of feeling off balance. If you have these dizzy spells, you might feel like you are spinning or that the world around you is spinning. Causes of Vertigo. Vertigo is...

  7. 2023年4月7日 · When vertigo is diagnosed, it is typically an inner ear problem that leads to sensations of not having balance. When you are older, there may be other factors contributing to vertigo, including...