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<bold>FIGURE 27-12</bold> Electrocardiographic (ECG) tracings of ventricular arrhythmias. Premature ventricular contractions (PVCs) (<italic>top tracing</bold>) originate from an ectopic focus in the ventricles, causing a distortion of the QRS complex. Because the ventricle usually cannot repolarize sufficiently to respond to the next impulse that arises in the sinoatrial node, a PVC frequently is followed by a compensatory pause. Ventricular tachycardia (<italic>middle tracing</bold>) is characterized by a rapi...
<bold>FIGURE 27-12</bold> Electrocardiographic (ECG) tracings of ventricular arrhythmias. Premature ventricular contractions (...
A 24-hour ambulatory electrocardiographic (ECG) recording in a patient with coronary artery disease and episodes of lightheadedness. A: At 10:28:36 p.m., the ECG records ST depression in leads aVF and V5, with ST elevation in lead V1. Over the next 4 minutes, the changes of acute injury progress. B: The rhythm degenerates into polymorphic ventricular tachycardia, from which the patient was resuscitated. This demonstrates the interaction of myocardial ischemia and subsequent ventricular arrh...
A 24-hour ambulatory electrocardiographic (ECG) recording in a patient with coronary artery disease and episodes of lightheadedness. A: At...
FIGURE 82.14. Ventricular tachycardia. Wide QRS with rate of approximately 250 bpm; sinusoidal pattern.
EKG-Ventricular Tachycardia. Illustration of EKG tracing showing ventricular tachycardia.
Electrocardiogram of ventricular tachycardia arising from the left sinus of Valsalva. Note the prominent broad R wave in leads V1 and V2.
<bold>FIGURE 27-16.</bold> Ventricular tachycardia in lead V<sub>1</sub>.