Acute Pulmonary Embolism
5.6 Acute Pulmonary Embolism Acute Pulmonary Embolism ECG characteristics: Mechanism: Acute systolic overload of the right ventricle as a result of occlusion of one or more arteries in the pulmonary…
QT Syndrome
5.10 QT Syndrome QT Syndrome ECG characteristics: Etiology: Congenital: Genetic defect of the voltage-dependent potassium or sodium channels (total of five different types) Acquired: Medication or ischemia ECG characteristics: Prolongation…
Arrhythmogenic Right Ventricular Dysplasia
5.8 Arrhythmogenic Right Ventricular Dysplasia Arrhythmogenic Right Ventricular Dysplasia
Ventricular Fibrillation
3.15 Ventricular Fibrillation Ventricular Fibrillation Mechanism: Rapid reentry? Faster focus? ECG characteristics: Nonhomogeneous oscillating ventricular complexes with no isoelectric axis Wave and tooth configuration Ventricular rate > 300 per minute
Ventricular Flutter
3.14 Ventricular Flutter Ventricular Flutter Mechanism: Rapid reentry? Faster focus? ECG characteristics: Homogeneous ventricular complexes with no isoelectric axis Hair-pin configuration Ventricular rate between 240 and 300 per minute
Brugada Syndrome
5.9 Brugada Syndrome Brugada Syndrome ECG characteristics: Etiology: Genetic defects with up to three mutations in SCN5A (sodium channel) with frequent familial occurrence of ventricular fibrillation ECG characteristics: Three types…
Dextrocardia
5.7 Dextrocardia Dextrocardia Mechanism: Right-sided location of the heart ECG characteristics: Low voltage Absent R formation in the precordial leads with rS configuration Nonspecific apical ventricular changes Etiology: Congenital Treatment:…
Depolarization of the Ventricles
2.5 Depolarization of the Ventricles The depolarization of the ventricles is represented by a QRS complex and is indicated by a solid arrow (). Ventricular ectopics are represented by a…
Impulse Formation in the Sinus Node
2.2 Impulse Formation in the Sinus Node The formation of the electrical impulse in the sinus node is necessary to give rise to so-called sinus rhythm. Formation of an impulse…
Right Ventricular Hypertrophy
5.5 Right Ventricular Hypertrophy Right Ventricular Hypertrophy Mechanism: Hypertrophy of the right ventricular musculature as a consequence of systolic or diastolic overload ECG characteristics: Often right axis P pulmonale (P…
