Bradycardia pathophysiology

Jump to navigation Jump to search

Bradycardia Microchapters

Home

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Bradycardia from other Conditions

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

Chest X Ray

CT

Echocardiography

MRI

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Bradycardia pathophysiology On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Bradycardia pathophysiology

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Bradycardia pathophysiology

CDC on Bradycardia pathophysiology

Bradycardia pathophysiology in the news

Blogs on Bradycardia pathophysiology

Directions to Hospitals Treating Bradycardia

Risk calculators and risk factors for Bradycardia pathophysiology

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: M.Umer Tariq [2]

Overview

Pathophysiology

It is difficult and sometimes impossible to assign a mechanism to any particular bradycardia. However, the underlying mechanism is not clinically relevant to treatment, which is the same in both cases of sick sinus syndrome: a permanent pacemaker.

There are generally two types of problems that result in bradycardias:

Disorders of the sinus node

  • Impaired automaticity - Sinus node dysfunction/sick sinus syndrome)
  • Exit block - Impaired conduction of the impulse from the sinus node into the surrounding atrial tissue

Disorders of the atrioventricular node (AV node)

References

Template:WH Template:WS