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  2. Drug-induced QT prolongation - Wikipedia

    en.wikipedia.org/wiki/Drug-induced_QT_prolongation

    TdP can be acquired by inheritance of a congenital long QT syndrome, or more commonly from the ingestion of a pharmacologic drug. During TdP episodes, patients have a heart rate of 200 to 250 beats/minute, which may present as palpitations or syncope.

  3. Metoprolol - Wikipedia

    en.wikipedia.org/wiki/Metoprolol

    The metabolism of metoprolol can vary widely among patients, often as a result of hepatic impairment [9] or CYP2D6 polymorphism. [10] Metoprolol was first made in 1969, patented in 1970, and approved for medical use in 1978. [11] [12] [13] It is on the World Health Organization's List of Essential Medicines. [14] It is available as a generic ...

  4. The One Thing You Should Never, Ever Do if You Have Heart ...

    www.aol.com/one-thing-never-ever-heart-102500060...

    "Palpitations are typically benign, but the risks are based on the underlying cause of the palpitations," says Dr. Bradley Serwer, MD, a cardiologist and the chief medical officer at VitalSolution.

  5. Arrhythmia - Wikipedia

    en.wikipedia.org/wiki/Arrhythmia

    The most common cause of sudden death in the US is coronary artery disease specifically because of poor oxygenation of the heart muscle, that is myocardial ischemia or a heart attack [15] Approximately 180,000 to 250,000 people die suddenly of this cause every year in the US. SADS may occur from other causes.

  6. Inotrope - Wikipedia

    en.wikipedia.org/wiki/Inotrope

    While negative inotropism may precipitate or exacerbate heart failure in the short term, certain beta blockers (e.g. carvedilol, bisoprolol and metoprolol) have been believed to reduce long-term morbidity and mortality in congestive heart failure. [13] Examples of negative inotropic agents include: Beta blockers [14]

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

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

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  8. 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 ...

  9. Premature ventricular contraction - Wikipedia

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

    Although there are many possible symptoms associated with PVCs, PVCs may also have no symptoms at all. PVCs may be perceived as a skipped heart beat, a strong beat, palpitations, or lightheadedness. They may also cause chest pain, a faint feeling, fatigue, or hyperventilation after exercise. [2] Symptoms may be more pronounced at times of stress.