ECG atlas of ventricular tachyarrhythmias in cardiac arrest
Sudden cardiac arrest is mostly heralded by ventricular tachyarrhythmias. This chapter presents the electrocardiographic (ECG) manifestations of ventricular…
Sudden cardiac arrest is mostly heralded by ventricular tachyarrhythmias. This chapter presents the electrocardiographic (ECG) manifestations of ventricular ectopy, monomorphic ventricular tachycardia, polymorphic ventricular tachycardia, ventricular flutter, and ventricular fibrillation. Recognizing ventricular tachyarrhythmias is imperative due to their life-threatening nature. This chapter presents real cases (Greenwald et al), each accompanied by multiple, chronologically recorded, ECGs, in order to illustrate the electrocardiographic evolution of ventricular tachyarrhythmias.
References
Greenwald SD. Development and analysis of a ventricular fibrillation detector. M.S. thesis, MIT Dept. of Electrical Engineering and Computer Science, 1986.
Goldberger, A., Amaral, L., Glass, L., Hausdorff, J., Ivanov, P. C., Mark, R., … & Stanley, H. E. (2000). PhysioBank, PhysioToolkit, and PhysioNet: Components of a new research resource for complex physiologic signals. Circulation. 101 (23), pp. e215–e220.
- Sudden cardiac arrest: Case 1Each recording presents two leads recorded simultaneously. Sex : Female Age : 72 years History : heart failure Medications : digoxin, quinidine ECG 1 . The initial beats are…
- Sudden cardiac arrest: Case 2Each recording presents two leads recorded simultaneously. Sex : Male Age : 43 years History : None Medications : None ECG 1 . Sinus rhythm interrupted by rapid ventricular…
- Sudden cardiac arrest: Case 3Sex : Male Age : 62 years History : Coronary bypass grafting; history of arrhythmias. Medications : beta-blockers ECG 1 . Sinus rhythm interrupted by ventricular tachycardia (VT).…
- Sudden cardiac arrest: Case 4ECG 1 . Sinus rhythm interrupted by ventricular tachycardia (VT). ECG 2 . Spontaneous termination of ventricular tachycardia (VT). ECG 3 . A single ventricular beat, followed by a…
- Sudden cardiac arrest: Case 5ECG 1 . Sinus rhythm interrupted by polymorphic VT. ECG 2 . Polymorphic VT. ECG 3 . Polymorphic VT progresses to ventricular fibrillation (VF). ECG 4 . Polymorphic VT progresses…
- Sudden cardiac arrest: Case 6ECG 1 . The initial rhythm is atrial fibrillation. The fifth beat is a ventricular premature beat. A ventricular tachycardia (VT) emerges. As evident, ventricular tachycardia may…
- Sudden cardiac arrest: Case 7ECG 1 . The underlying rhythm is atrial fibrillation, which is interrupted by polymorphic ventricular tachycardia (VT). ECG 2 . Polymorphic ventricular tachycardia. ECG 3 .…
- Sudden cardiac arrest: Case 8ECG 1 . There is atrial fibrillation. Three QRS-T complexes are seen, with the latter two having similar QRS morphology. These beats may originate from the ventricles or atria.…
Causes of sudden cardiac arrest
It is commonly stated that approximately 80% of all cardiac arrests are caused by acute or chronic coronary artery disease, with the latter being the most common. The figure 80%…
Sudden cardiac arrest: Case 1
Each recording presents two leads recorded simultaneously. Sex : Female Age : 72 years History : heart failure Medications : digoxin, quinidine ECG 1 . The initial beats are…