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Related Concept Videos

Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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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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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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Dysrhythmias VI: Management of Dysrhythmias01:25

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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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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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ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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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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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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Implantation of Total Artificial Heart in Congenital Heart Disease
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Acquired Complete Heart Block In Young Adults.

W Van Mieghem, H Ector, J Claessens

  • 1a Division of Cardiology, Department of Internal Medicine , University Clinic St. Rafaël , Kapucijnenvoer 35, 3000 Leuven , Belgium .

Acta Clinica Belgica
|May 31, 2016
PubMed
Summary
This summary is machine-generated.

Acquired complete heart block in young adults can occur without clear cause, affecting different heart areas. Treatment often involves pacemaker implantation for long-term management.

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Internal Medicine

Background:

  • Acquired complete heart block is uncommon in young adults.
  • Etiology is often unclear in these cases.
  • Understanding the anatomical location of the block is crucial for management.

Purpose of the Study:

  • To present two cases of acquired complete heart block in young adults.
  • To discuss the anatomical and functional abnormalities observed.
  • To highlight the diagnostic and therapeutic considerations.

Main Methods:

  • Case report presentation.
  • Clinical evaluation and diagnostic workup.
  • Pacemaker implantation for treatment.

Main Results:

  • Two young adults presented with acquired complete heart block of unknown etiology.
  • Abnormalities were located distal to the bundle of His in one patient and within the AV node and right bundle branch in the other.
  • A significant time interval was noted between initial symptoms and definitive diagnosis.

Conclusions:

  • Acquired complete heart block in young adults necessitates thorough investigation for underlying causes.
  • The location of the conduction abnormality influences clinical presentation and management.
  • Demand pacemaker implantation is an effective treatment for symptomatic patients.