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Pulse rhythm01:30

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
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Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
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Mechanism of Cardiac Arrhythmias01:28

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Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
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Updated: May 8, 2025

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Leadless pacing: a comprehensive review.

Shmaila Saleem-Talib1, Crispijn P R Hoevenaars1, Nadine Molitor2

  • 1Department of Cardiology, Haga Teaching Hospital, The Hague, The Netherlands.

European Heart Journal
|March 19, 2025
PubMed
Summary
This summary is machine-generated.

Leadless pacemakers (LPMs) have evolved significantly, offering improved features and fewer complications than traditional transvenous pacemakers (TVPMs). Future advancements promise expanded applications and better patient outcomes in cardiac pacing.

Keywords:
AVEIRCRTCSPLeadless pacemakerMicra

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Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Leadless pacing technology has rapidly advanced over the last decade.
  • Current leadless pacemaker (LPM) devices offer features like VDD mode, atrial stimulation, and dual-chamber pacing.
  • Studies indicate LPMs have a lower rate of device-related complications compared to transvenous pacemakers (TVPMs).

Purpose of the Study:

  • To review the evolution, current status, and future prospects of leadless pacing.
  • To highlight advancements in implantation techniques, clinical outcomes, and LPM technology.
  • To discuss the potential integration of LPMs with other devices and future applications like cardiac resynchronization therapy.

Main Methods:

  • Literature review focusing on leadless pacing advancements.
  • Analysis of clinical outcomes comparing LPMs and TVPMs.
  • Discussion of emerging technologies and future research directions in leadless pacing.

Main Results:

  • LPMs demonstrate significant improvements in functionality and patient safety.
  • Reduced device-related complications are observed with LPMs compared to TVPMs.
  • Ongoing research explores leadless cardiac resynchronization therapy and conduction system pacing.

Conclusions:

  • Leadless pacing technology is rapidly evolving with promising clinical outcomes.
  • Future developments are expected to broaden the application of LPMs, enhancing patient care.
  • LPMs are poised to play an increasingly vital role in cardiovascular device therapy.