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…
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…
From Symptoms to the ECGECGs in the Presence of Precordial Pain or Other Symptoms 15.1. Chest Pain 15.1.1. Ischemic Heart Disease Versus Pericarditis or Other Causes of Chest Pain Patients with chest…
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…
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,…
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…
Abnormal ECG Without Apparent Heart Disease and Normal ECG in Serious Heart Disease I would like to finish this short book which deals with the bases of normal ECG and…
