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Related Concept Videos

Pulse Assessment Sites01:11

Pulse Assessment Sites

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Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
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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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Related Experiment Video

Updated: Apr 17, 2026

Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice
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Selective pacing sites.

G Coppola1, C La Greca, E Corrado

  • 1Operative Unit of Cardiology II, Scuola di Specializzazione in Malattie dell'Apparato Cardiovascolare, Department of Internal Medicine, Cardiovascular and Nephrourologic Diseases, Policlinico Universitario "Paolo Giaccone", Palermo, Italy - angynog@hotmail.it.

Minerva Cardioangiologica
|February 26, 2015
PubMed
Summary
This summary is machine-generated.

Right ventricular apical pacing can harm left ventricular function. Alternative pacing sites like RVOT and His bundle pacing offer more physiological activation, improving outcomes and reducing risks associated with traditional methods.

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Devices

Background:

  • Right ventricular apical (RVA) pacing is common due to ease of access and lead stability.
  • Long-term RVA pacing can cause iatrogenic left bundle branch block, leading to adverse left ventricular remodeling and dysfunction.
  • These effects contribute to increased morbidity and mortality in patients with chronic RVA pacing.

Purpose of the Study:

  • To evaluate alternative ventricular pacing sites to improve cardiac function compared to RVA pacing.
  • To explore pacing strategies that promote more physiological ventricular activation patterns.
  • To mitigate the deleterious effects of chronic RVA pacing on left ventricular performance.

Main Methods:

  • Review of existing literature on various pacing sites including RVA, RVOT, His bundle pacing (DHBP), parahisian pacing (PHP), and bifocal pacing.
  • Comparison of hemodynamic performance, electrical activation patterns, and long-term outcomes associated with different pacing strategies.
  • Analysis of safety, effectiveness, and procedural requirements for each pacing technique.

Main Results:

  • RVOT pacing, particularly septal, demonstrates a more physiological contraction pattern than RVA pacing.
  • DHBP offers synchronous depolarization but has limitations including longer implant times and patient contraindications.
  • PHP presents a viable alternative to DHBP, and bifocal pacing shows improved acute hemodynamic performance in CRT candidates compared to RVA pacing.

Conclusions:

  • Alternative pacing sites such as RVOT, DHBP, and PHP offer potential advantages over RVA pacing by promoting more physiological ventricular activation.
  • The choice of pacing site should consider safety, effectiveness, equipment needs, and patient-specific factors to optimize outcomes.
  • Further research and clinical adoption of these alternative sites may reduce the long-term negative consequences of ventricular pacing.