Final answer:
Junctional tachycardia is a heart arrhythmia that originates from the AV junction with a ventricular rate of 101 to 180 beats per minute and can be diagnosed with an ECG.
Step-by-step explanation:
The dysrhythmia, or heart arrhythmia, originating in the AV junction with a ventricular rate between 101 to 180 beats per minute is commonly referred to as junctional tachycardia. An arrhythmia such as this can signify an issue with the heart's electrical conduction system, potentially leading to serious complications if not addressed. Arrhythmias are normally diagnosed using an electrocardiogram (ECG) and possibly other tests like a Holter monitor to assess the condition further.