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  2. Torsades de pointes - Wikipedia

    en.wikipedia.org/wiki/Torsades_de_pointes

    Long QT intervals predispose the patient to an R-on-T phenomenon, wherein the R-wave, representing ventricular depolarization, occurs during the relative refractory period at the end of repolarization (represented by the latter half of the T-wave). An R-on-T can initiate torsades. Sometimes, pathologic T-U waves may be seen in the ECG before ...

  3. Pacemaker syndrome - Wikipedia

    en.wikipedia.org/wiki/Pacemaker_syndrome

    Pacemaker syndrome is a condition that represents the clinical consequences of suboptimal atrioventricular (AV) synchrony or AV dyssynchrony, ...

  4. Pacemaker - Wikipedia

    en.wikipedia.org/wiki/Pacemaker

    A pacemaker, also known as an artificial cardiac pacemaker, is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart. Each pulse causes the targeted chamber(s) to contract and pump blood, [ 3 ] thus regulating the function of the electrical conduction system of the heart .

  5. R-on-T phenomenon - Wikipedia

    en.wikipedia.org/?title=R-on-T_phenomenon&...

    This page was last edited on 28 December 2021, at 11:30 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  6. Arnold Schwarzenegger just got a pacemaker. Here's what to ...

    www.aol.com/lifestyle/arnold-schwarzenegger-just...

    Arnold Schwarzenegger has become more like his iconic Terminator character after having surgery last week to receive a pacemaker, the 76-year-old actor and former California governor announced ...

  7. Pacemaker failure - Wikipedia

    en.wikipedia.org/wiki/Pacemaker_failure

    Pacemaker failure is the inability of an implanted artificial pacemaker to perform its intended function of regulating the beating of the heart. A pacemaker uses electrical impulses delivered by electrodes in order to contract the heart muscles. [ 1 ]

  8. Arnold Schwarzenegger Reveals He Had Surgery to Install ...

    www.aol.com/arnold-schwarzenegger-reveals-had...

    In the weekly note, the 76-year-old actor shared that he had undergone surgery to have a pacemaker put in, after a lifelong battle with a genetic heart condition."Last Monday, I had surgery to ...

  9. Junctional ectopic tachycardia - Wikipedia

    en.wikipedia.org/wiki/Junctional_Ectopic_Tachycardia

    Junctional ectopic tachycardia (JET) is a rare syndrome of the heart that manifests in patients recovering from heart surgery. [1] It is characterized by cardiac arrhythmia, or irregular beating of the heart, caused by abnormal conduction from or through the atrioventricular node (AV node).

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