7: Ventricular Blocks
Ventricular Blocks 7.1. General Concepts In the specific intraventricular conduction system there are four fascicles (Fig. 7.1): the right bundle branch (RBB), the left bundle branch (LBB) and its two divisions,…
12: ECG Patterns of Ventricular Arrhythmias
ECG Patterns of Ventricular Arrhythmias In this chapter, we describe the ECG characteristics of ventricular arrhythmias. Their mechanisms have been explained in Chapter 10. 12.1. Premature Ventricular Complexes 12.1.1. Ventricular Extrasystoles (VE):…
11: ECG Patterns of Supraventricular Arrhythmias
ECG Patterns of Supraventricular Arrhythmias In this chapter we describe the ECG characteristics of supraventricular arrhythmias. Their mechanisms have been explained in Chapter 10. 11.1. Premature Complexes (Fig. 11.1) [A] These…
6: Ventricular Enlargements
Ventricular Enlargements 6.1. Background The term ventricular enlargement (VE) refers to both hypertrophy of the myocardial mass of the ventricles as well as dilation of the cavity, and may include a…
10: Concepts, Classification, and Mechanisms of Arrhythmias
Concepts, Classification, and Mechanisms of Arrhythmias 10.1. Concepts [A] Any cardiac rhythm that is not normal sinus rhythm is considered an arrhythmia (see Section 4.2.1 in Chapter 4). The ECG is…
16: The ECG in Genetically Induced Heart Diseases and Other ECG Patterns with Poor Prognosis
The ECG in Genetically Induced Heart Diseases and Other ECG Patterns with Poor Prognosis 16.1. Concept There are ECG patterns in sinus rhythm that by themselves, in the absence of current…
17: ECG Recordings in Other Heart Diseases and Different Situations
ECG Recordings in Other Heart Diseases and Different Situations In Chapter 9 we explained the most important aspects of ischemic heart disease, and in Chapter 15 we discussed the important…
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…
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…
15: From Symptoms to the ECG: ECGs in the Presence of Precordial Pain or Other Symptoms
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…
