<unk><unk>  or AV junction rhythm is usually caused by the absence of the electrical impulse from the SA node.  This usually appears on an EKG with a normal QRS complex accompanied with an inverted P wave either before, during, or after the QRS complex.
Junctional bradycardia electrocardiogram
Premature atrial contraction electrocardiogram
Junctional tachycardia electrocardiogram
Atrial flutter electrocardiogram
Junctional tachycardia ECG
Pulseless ventricular tachycardia electrocardiogram
Intraventricular conduction delay electrocardiogram
Ventricular tachycardia electrocardiogram