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  2. Pacemaker syndrome - Wikipedia

    en.wikipedia.org/wiki/Pacemaker_syndrome

    No specific set of criteria has been developed for diagnosis of pacemaker syndrome. Most of the signs and symptoms of pacemaker syndrome are nonspecific, and many are prevalent in the elderly population at baseline. In the lab, pacemaker interrogation plays a crucial role in determining if the pacemaker mode had any contribution to symptoms. [5 ...

  3. Ventricular dyssynchrony - Wikipedia

    en.wikipedia.org/wiki/Ventricular_dyssynchrony

    Dyssynergy refers to changes in relative strength of contractions, whereas dyssynchrony is a change in relative timing of contractions. [1] Once again the terms inotropy and chronotropy apply to the pathology under examination. Biventricular pacing strongly favors chronotropy over inotropy. [citation needed]

  4. Sinoatrial arrest - Wikipedia

    en.wikipedia.org/wiki/Sinoatrial_arrest

    This condition can be detected on an electrocardiogram (ECG) as a brief period of irregular length with no electrical activity before either the sinoatrial node resumes normal pacing, or another pacemaker begins pacing. If a pacemaker other than the sinoatrial node is pacing the heart, this condition is known as an escape rhythm.

  5. VA conduction - Wikipedia

    en.wikipedia.org/wiki/VA_conduction

    Ventricular pacemaker with 1:1 retrograde ventriculoatrial (V-A) conduction to the atria (arrows). VA conduction, also named Ventriculoatrial conduction and sometimes referred to as Retrograde conduction, is the conduction backward phenomena in the heart, where the conduction comes from the ventricles or from the AV node into and through the atria.

  6. Premature ventricular contraction - Wikipedia

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

    Women may be more aware of PVCs at the time of the menstrual period. [ 2 ] Premature ventricular contractions may be associated with underlying heart disease, and certain characteristics are therefore elicited routinely: the presence of signs of heart disease or a known history of heart disease (e.g. previous myocardial infarction ), as well as ...

  7. Pacemaker failure - Wikipedia

    en.wikipedia.org/wiki/Pacemaker_failure

    Reel's Syndrome Like Twiddler's Syndrome, it is the manipulation of the pulse generator, but instead the generator is rotated on its transverse axis, which rolls the lead around the generator, creating dislodgement. [5] Direct trauma over the system. [5] Lead fracture [2] Unit malfunction Battery failure, component malfunction, or generator ...

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  9. Junctional escape beat - Wikipedia

    en.wikipedia.org/wiki/Junctional_escape_beat

    A junctional escape beat is a delayed heartbeat originating not from the atrium but from an ectopic focus somewhere in the atrioventricular junction. [1] It occurs when the rate of depolarization of the sinoatrial node falls below the rate of the atrioventricular node. [2]

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