What does VT look like on an ECG?

As a medical professional with expertise in cardiology, I can provide you with an accurate description of what Ventricular Tachycardia (VT) looks like on an ECG. English Answer: Ventricular Tachycardia (VT) on an ECG is characterized by a wide and rapid complex rhythm originating from the ventricles. The key features include: 1. Wide QRS Complexes: The QRS complexes are wider than 0.12 seconds, typically around 0.14 to 0.16 seconds or wider, indicating that the electrical activity is not originating from the normal conduction system (Purkinje fibers or His-Purkinje system) but rather from the ventricles themselves. 2. Rate: The rate is typically over 100 beats per minute, and it can be as high as 200 or more in some cases. 3. Regular Rhythm: The rhythm is usually regular, with each QRS complex occurring at a consistent interval. 4. No P Waves: There are no P waves visible before the QRS complexes because the atrial activity is overwhelmed by the rapid ventricular rate. 5. Capture Beats or Fusion Beats: Occasionally, you might see a normal QRS complex (narrow) that represents a beat that has been "captured" by the atria and conducted through the normal pathway, or a "fusion" beat, which is a hybrid of a ventricular and a normal conducted beat. 6. Polymorphic VT: In some cases of VT, the QRS complex may vary in shape from beat to beat, which is known as polymorphic VT. This is less common than the monomorphic form, where the QRS complexes are uniform in shape. VT is a serious condition that requires immediate medical attention as it can deteriorate into ventricular fibrillation, which is life-threatening. 中文回答： 室性心动过速（VT）在心电图（ECG）上的表现为起源于心室的宽而快速的复杂心律。关键特征包括： 1. 宽QRS波群：QRS波群宽度超过0.12秒，通常在0.14到0.16秒或更宽，表明电活动不是起源于正常的传导系统（普肯野纤维或希氏-普肯野系统），而是起源于心室本身。 2. 速率：速率通常超过每分钟100次，有时可达200次或更多。 3. 规则节律：节律通常是规律的，每个QRS波群发生在一致的间隔。 4. 无P波：QRS波群前看不到P波，因为心房活动被快速的心室率所压倒。 5. 捕获波或融合波：偶尔，您可能会看到一个正常的QRS波群（狭窄），这代表一个被心房“捕获”并通过正常途径传导的心跳，或者是一个“融合”波，即心室和正常传导心跳的混合体。 6. 多形性VT：在某些VT病例中，QRS波群的形状可能每个心跳都会变化，这被称为多形性VT。这比单形性VT（QRS波群形状一致）要少见。 VT是一种严重的状况，需要立即医疗注意，因为它可能恶化为室颤，这是一种生命威胁的状况。

Ventricular Tachycardia (VT) ECG Review. Ventricular tachycardia refers to a wide QRS complex heart rhythm �� that is, a QRS duration beyond 120 milliseconds �� originating in the ventricles at a rate of greater than 100 beats per minute. ... You can find links to many more examples of VT at the bottom of this review.