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Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
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Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
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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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Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
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Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice
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Pacing to prevent atrial fibrillation.

Surendra K Chutani1, Arti N Shah, Bharat K Kantharia

  • 1aIcahn Mount Sinai School of Medicine bCardiovascular and Heart Rhythm Consultants, New York, New York, USA.

Current Opinion in Cardiology
|November 23, 2016
PubMed
Summary

While pacemakers are common in atrial fibrillation patients, current pacing methods generally do not prevent this arrhythmia. Newer antitachycardia pacing therapies show promise for reducing atrial fibrillation burden and improving outcomes.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Electrophysiology

Background:

  • Atrial fibrillation (AF) is common in pacemaker patients.
  • Pacemaker implantation is frequently indicated for various cardiac conditions.
  • Understanding the interplay between pacing and AF is crucial for patient management.

Purpose of the Study:

  • To review the scientific basis of cardiac pacing for AF prevention.
  • To discuss current standards in pacing for AF.
  • To explore future research directions in this field.

Main Methods:

  • Review of multiple clinical trials and observational studies.
  • Analysis of different pacing modes, sites, and algorithms.
  • Evaluation of newer antitachycardia pacing therapies.

Main Results:

  • Pacing at alternative sites or with specific algorithms has yielded inconsistent results for AF prevention.
  • Newer antitachycardia pacing therapies demonstrate promising reductions in permanent AF, hospitalizations, and mortality.
  • Most conventional pacing methods have not proven effective in preventing AF.

Conclusions:

  • Permanent pacemaker implantation is not supported for AF prevention per se.
  • Pacing remains indicated for sinus node dysfunction and conduction abnormalities.
  • Emerging antitachycardia pacing strategies offer potential for improved AF management.