8: Ventricular Preexcitation

Aug 29, 2016 by in CARDIOLOGY Comments Off on 8: Ventricular Preexcitation

Ventricular Preexcitation 8.1.  Concepts and Types Ventricular preexcitation occurs when the electrical stimulus reaches the ventricles before the normal activation through the specific conduction system (SCS). In fact, this phenomenon is…

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13: The ECG Patterns of Passive Arrhythmias

Aug 29, 2016 by in CARDIOLOGY Comments Off on 13: The ECG Patterns of Passive Arrhythmias

The ECG Patterns of Passive Arrhythmias 13.1.  Complex and Escape Rhythm (Fig. 13.1) Escape complexes and escape rhythms originate in a structure below the sinus node when the sinus node is…

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1: Anatomical and Electrophysiological Bases

Aug 29, 2016 by in CARDIOLOGY Comments Off on 1: Anatomical and Electrophysiological Bases

Anatomical and Electrophysiological Bases 1.1.  The Heart Walls The heart has four cavities, two atria and two ventricles, comprised mainly of contractile cells called cardiomyocytes. The electrical stimulus originating in the…

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5: Atrial Abnormalities

Aug 29, 2016 by in CARDIOLOGY Comments Off on 5: Atrial Abnormalities

Atrial Abnormalities 5.1.  Initial Considerations This concept includes atrial enlargements and atrial blocks. These entities are different, but they are frequently associated and often have a shared ECG pattern. Interatrial blocks,…

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3: Recording Devices and Techniques

Aug 29, 2016 by in CARDIOLOGY Comments Off on 3: Recording Devices and Techniques

Recording Devices and Techniques 3.1.  Recording Devices Until recently, recording devices were analog, and recordings were generally made on thermosensitive paper. Today we live in the digital age and devices are…

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