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Related Concept Videos

Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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...
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

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.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

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...
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

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 minute.
Dysrhythmias I: Introduction01:15

Dysrhythmias I: Introduction

Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...

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Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
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[Systemic sclerosis complicated with syncope and complete AV block].

Francisco Femenía1, Mauricio Arce, Martín Arrieta

  • 1Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina. femeniafavier@hotmail.com

Medicina
|October 6, 2010
PubMed
Summary

Systemic sclerosis can cause heart rhythm problems. A rare case of complete atrioventricular block in a systemic sclerosis patient highlights the need for cardiac monitoring.

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Area of Science:

  • Cardiology
  • Rheumatology
  • Immunology

Background:

  • Systemic sclerosis (SSc) is an autoimmune disease characterized by fibrosis of skin and organs.
  • Cardiac involvement, including conduction abnormalities like bundle branch blocks, is common in SSc.
  • Complete atrioventricular block is a rare but serious cardiac manifestation of SSc.

Observation:

  • A 47-year-old female with diagnosed systemic sclerosis presented with syncope.
  • The syncope was attributed to a complete atrioventricular block.
  • This rare cardiac event necessitated permanent pacemaker implantation.

Findings:

  • The case demonstrates a rare occurrence of complete atrioventricular block in a patient with systemic sclerosis.
  • This finding underscores the potential for severe cardiac conduction disturbances in SSc.
  • Complete atrioventricular block, though infrequent, can be a critical complication.

Implications:

  • Early recognition and monitoring of cardiac conduction abnormalities in SSc patients are crucial.
  • This case emphasizes the importance of considering rare cardiac complications in systemic sclerosis.
  • Prompt intervention, such as pacemaker implantation, can be life-saving in managing severe bradyarrhythmias in SSc.