Rules for Ventricular Tachycardia (V-Tach)
Regularity: R-R intervals are usually regular but not always. Rate: The atrial rate cannot be determined. Ventricular rate is usually between 150 and 250 beats/min. P WAVE: QRS complexes are not preceded by P waves. There are occasionally P waves in the strip, but they are not associated with the ventricular rhythm PRI: PRI is not measured since this is a ventricular rhythm. QRS: Measures more than 0.12 seconds. The QRS will usually be wide and bizarre. It is usually difficult to see a separation between the QRS complex and the T wave. 