Basic Dysrhythmias Interpretation

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Basic DysrhythmiasInterpretation Management

• Robert J. Huszar, MD

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Chapter 1A P of the Heart

• Cardiac Cycle
• Electrical Conduction System of the Heart
• Cardiac Cells
• Electrophysiology of the Heart
• Nervous Control of the heart

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Types of Cells

• Electrical (conductive) cells
• Mechanical (contracting) cells

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COMPONENTS OF THE SPECIALIZED CONDUCTION SYSTEM

• Sinoatrial Node (SA Node)
• Internodal Tracts
• Atrioventricular Node
• Bundle of His
• Bundle Branches
• Purkinje Network

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Accessory Conduction Pathway

• Bundles of Kent
• James Fibers
• Mahaim fibers

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Electrophysiology of the Heart

• Resting State of the Cardiac Cell
• Depolarization and Repolarization
• Threshold Potential
• Cardiac Action Potential
• Refractory and Supernormal Periods
• Excitability and Automaticity
• Dominant and Escape Pacemakers of the Heart
• Mechanisms of Abnormal Electrical Impulse
  Formation

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• Enhanced Automaticity
• Reentry
• Triggered Activity

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Nervous Control of the Heart

• Sympathetic
• Parasympathetic

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THE END