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2. Palpitations - Wikipedia

   en.wikipedia.org/wiki/Palpitations

   Vagus nerve induced palpitation is felt as a thud, a hollow fluttery sensation, or a skipped beat, depending on at what point during the heart's normal rhythm the vagus nerve fires. In many cases, the anxiety and panic of experiencing palpitations cause a patient to experience further anxiety and increased vagus nerve stimulation. The link ...

3. Premature ventricular contraction - Wikipedia

   en.wikipedia.org/wiki/Premature_ventricular...

   Cardiology. A premature ventricular contraction ( PVC) is a common event where the heartbeat is initiated by Purkinje fibers in the ventricles rather than by the sinoatrial node. PVCs may cause no symptoms or may be perceived as a "skipped beat" or felt as palpitations in the chest. PVCs do not usually pose any danger.

4. When Should You See a Doctor About Heart Palpitations ... - AOL

   www.aol.com/lifestyle/see-doctor-heart...

   Patwa says that heart palpitations are tied to the heart's electrical conduction system, a network of muscle cells in the heart’s wall that control heartbeats’ rate and rhythm. “The heart ...

5. Premature heart beat - Wikipedia

   en.wikipedia.org/wiki/Premature_heart_beat

   A premature heart beat or extrasystole[ 1] is a heart rhythm disorder corresponding to a premature contraction of one of the chambers of the heart. Premature heart beats come in two different types: premature atrial contractions and premature ventricular contractions. Often they cause no symptoms but may present with fluttering in the chest or ...

6. Atrial fibrillation - Wikipedia

   en.wikipedia.org/wiki/Atrial_fibrillation

   Rapid and irregular heart rates may be perceived as the sensation of the heart beating too fast, irregularly, or skipping beats (palpitations) or exercise intolerance and occasionally may produce anginal chest pain (if the high heart rate causes the heart's demand for oxygen to increase beyond the supply of available oxygen).

7. Arrhythmia - Wikipedia

   en.wikipedia.org/wiki/Arrhythmia

   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]