Final answer:
False. Ventricular dysrhythmias refer to abnormal heart rhythms originating from the ventricles, and their P-P intervals are not constant.
Step-by-step explanation:
False. Ventricular dysrhythmias refer to abnormal heart rhythms originating from the ventricles. In ventricular dysrhythmias, the P-P intervals are not constant. The P-P interval represents the time between consecutive P waves on an electrocardiogram (ECG), which correspond to atrial depolarization.
Since ventricular dysrhythmias are abnormal rhythms originating from the ventricles, they do not have a consistent and regular pattern of atrial depolarization represented by the P-P intervals. Instead, the focus is on the QRS complex, which represents ventricular depolarization. So, the statement that P-P intervals are constant in all ventricular dysrhythmias is false.