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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 ...
Here, cardiologists explain what causes heart palpitations and when it’s important not to ignore them. Related: 25 Foods That Are Good for Your Heart, From Fruits and Veggies to Heart-Healthy ...
Atrial fibrillation is associated with an increased risk of heart failure, dementia, and stroke. [3][12]It is a type of supraventricular tachycardia. [14] Atrial fibrillation frequently results from bursts of tachycardiathat originate in muscle bundles extending from the atriumto the pulmonary veins.[15]
Heart palpitations. Headaches. Despite these similarities, a POTS diagnosis requires that patients don't normally experience low blood pressure. Nonetheless, each patient is different – some ...
Paroxysmal nocturnal dyspnea or paroxysmal nocturnal dyspnoea (PND) is an attack of severe shortness of breath and coughing that generally occurs at night. [ 1 ] It usually awakens the person from sleep, and may be quite frightening. [ 2 ] PND, as well as simple orthopnea, may be relieved by sitting upright at the side of the bed with legs ...
For instance, heart palpitations can be a red flag for an underlying heart condition. However, even potentially harmless reasons for heart palpitations can have serious consequences.
Arrhythmias, also known as cardiac arrhythmias, are irregularities in the heartbeat, including when it is too fast or too slow. [ 2 ] A resting heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia, and a resting heart rate that is too slow – below 60 beats per minute – is called bradycardia. [ 2 ]
Orthopnea or orthopnoea [1] is shortness of breath (dyspnea) that occurs when lying flat, [2] causing the person to have to sleep propped up in bed or sitting in a chair. It is commonly seen as a late manifestation of heart failure, resulting from fluid redistribution into the central circulation, causing an increase in pulmonary capillary pressure and causing difficulty in breathing.