Ventricular escape beat

（重定向自Escape rhythm）

Animation illustrating the normal activation of the electrical conduction system of the heart: starting from the sinoatrial node, an electrical impulse spreads across the atria, then passes through the atrioventricular node (AV node) and conducts on via the bundle branches towards the ventricles.

The first 2.5 seconds show a normal cardiac cycle. This is followed by a period of delayed sinus activity which initiates a takeover response by the ventricular pacemaker cells resulting in a ventricular escape beat. Two escape beats are shown between 5-8 seconds.

In cardiology a ventricular escape beat is a self-generated electrical discharge initiated by, and causing contraction of, the ventricles of the heart; normally the heart rhythm is begun in the atria of the heart and is subsequently transmitted to the ventricles. The ventricular escape beat follows a long pause in ventricular rhythm and acts to prevent cardiac arrest. It indicates a failure of the electrical conduction system of the heart to stimulate the ventricles (which would lead to the absence of heartbeats, unless ventricular escape beats occur).

单词	Escape rhythm
释义	Escape rhythm 原声例句医学英语心内科 This is known as an " ESCAPE rhythm" . 这就是所谓的“逸搏节律”。医学英语心内科 On an ECG, two independent rhythms can be seen: a regular P wave pattern represents atrial rhythm; and a regular, but UNUSUALLY slow QRS pattern represents the escape rhythm. 这就是所谓的“逸搏节律”。在心电图上，可以看到两个独立的节律：规则的P波代表心房节律；规则但异常缓慢的QRS波群代表逸搏节律。英语百科 Ventricular escape beat （重定向自Escape rhythm） In cardiology a ventricular escape beat is a self-generated electrical discharge initiated by, and causing contraction of, the ventricles of the heart; normally the heart rhythm is begun in the atria of the heart and is subsequently transmitted to the ventricles. The ventricular escape beat follows a long pause in ventricular rhythm and acts to prevent cardiac arrest. It indicates a failure of the electrical conduction system of the heart to stimulate the ventricles (which would lead to the absence of heartbeats, unless ventricular escape beats occur).
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