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  2. Potassium supplementation may help prevent AFib after heart ...

    www.aol.com/lifestyle/potassium-supplementation...

    Severely elevated potassium levels can be fatal,” Drury said. Maintaining a potassium level between 3.6 mEq/L and 5.5 mEq/L is optimum for cardiovascular health in general, he added.

  3. Hyperkalemia - Wikipedia

    en.wikipedia.org/wiki/Hyperkalemia

    Hyperkalemia is an elevated level of potassium (K +) in the blood. [1] Normal potassium levels are between 3.5 and 5.0 mmol/L (3.5 and 5.0 mEq/L) with levels above 5.5 mmol/L defined as hyperkalemia. [3] [4] Typically hyperkalemia does not cause symptoms. [1] Occasionally when severe it can cause palpitations, muscle pain, muscle weakness, or ...

  4. What You Need to Know About Abnormal Heart Rhythm - AOL

    www.aol.com/know-abnormal-heart-rhythm-145227534...

    Atrial Fibrillation. Atrial fibrillation (A-fib) occurs when the heart's upper chambers (the atria) beat irregularly, making it difficult for the heart to pump blood out. ... Levels of potassium ...

  5. AFib Risk: Potassium Less Necessary After Heart Surgery Than ...

    www.aol.com/lifestyle/afib-risk-potassium-less...

    “When potassium levels are very low, people are at much higher risk of arrhythmias, including life threatening ventricular fibrillation and even AFib. Severely elevated potassium levels are also ...

  6. 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.

  7. Jervell and Lange-Nielsen syndrome - Wikipedia

    en.wikipedia.org/wiki/Jervell_and_Lange-Nielsen...

    Jervell and Lange-Nielsen syndrome (JLNS) is a rare type of long QT syndrome associated with severe, bilateral sensorineural hearing loss. [2] Those with JLNS are at risk of abnormal heart rhythms called arrhythmias, which can lead to fainting, seizures, or sudden death. JLNS, like other forms of long QT syndrome, causes the cardiac muscle to ...

  8. Left axis deviation - Wikipedia

    en.wikipedia.org/wiki/Left_axis_deviation

    Left axis deviation. The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane. In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between −30° and −90°.

  9. Multifocal atrial tachycardia - Wikipedia

    en.wikipedia.org/wiki/Multifocal_atrial_tachycardia

    Cardiology. Multifocal (or multiform) atrial tachycardia (MAT) is an abnormal heart rhythm, [2] specifically a type of supraventricular tachycardia, that is particularly common in older people and is associated with exacerbations of chronic obstructive pulmonary disease (COPD). Normally, the heart rate is controlled by a cluster of cells called ...

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