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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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Related Experiment Video

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Robotic Ablation of Atrial Fibrillation
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Persistent Atrial Fibrillation Ablation With or Without Contact Force Sensing.

Ayman A Hussein1, Amr F Barakat1, Walid I Saliba1

  • 1Cleveland Clinic, Section of Cardiac Pacing and Electrophysiology, Cleveland, Ohio, USA.

Journal of Cardiovascular Electrophysiology
|February 11, 2017
PubMed
Summary

Contact force (CF)-sensing catheters reduce procedure time and fluoroscopy exposure during persistent atrial fibrillation (PersAF) ablation. Using CF-sensing technology significantly lowers the risk of arrhythmia recurrence after ablation.

Keywords:
ablationcontact forcepersistent atrial fibrillation

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Area of Science:

  • Electrophysiology
  • Cardiology
  • Medical Devices

Background:

  • Persistent atrial fibrillation (PersAF) ablation outcomes are often limited by arrhythmia recurrences.
  • Contact force (CF)-sensing catheters offer objective contact assessment during radiofrequency ablation.
  • The role of CF-sensing in PersAF ablation remains under-investigated.

Purpose of the Study:

  • To compare procedural characteristics and clinical outcomes of PersAF ablation with and without CF-sensing catheters.
  • To evaluate the efficacy of CF-sensing technology in reducing arrhythmia recurrences post-ablation.

Main Methods:

  • A consecutive series of 174 patients undergoing first-time PersAF ablation were analyzed.
  • Procedures included pulmonary vein isolation and substrate modification.
  • Outcomes were assessed by monitoring arrhythmia recurrence off antiarrhythmics for 1 year.

Main Results:

  • Ablation using CF-sensing catheters resulted in significantly shorter procedure times (204 vs. 216 minutes) and fluoroscopy times (36 vs. 48 minutes).
  • The CF-sensing group showed a lower rate of arrhythmia recurrence (27.6% vs. 46.4%).
  • Multivariable analysis confirmed CF-sensing use was associated with a reduced risk of recurrence (HR 0.49).

Conclusions:

  • CF-sensing catheter use in PersAF ablation is linked to improved procedural efficiency.
  • Utilizing CF-sensing technology significantly decreases the likelihood of post-ablation arrhythmia recurrence.
  • CF-sensing catheters represent a valuable advancement for persistent atrial fibrillation ablation.