EKG Ch 7-8 Test Review

A rhythm that occurs when the SA node fails to initiate the electrical activity and one of the back up pacemaker sites take over

• junctional escape rhythm

• premature junctional complex

• accelerated junctional rhythm

• junctional tachycardia

How does the preexcitation of the ventricles in reentry dysrhythmias appear on an ECG tracing?

• inverted P wave

• delta wave

• U wave

• inverted T wave

Blockage or short circuit of the normal electrical conduction pathway

• junctional tachycardia

• reentry dysrhythmia

• Wolfe-Parkinson-White syndrome

• slow conduction through the bundle of His

Junctional rhythms occur as a result of electrical impulses coming from the Purkinje network rather than the SA node

• True

• False

If all abnormal impulses are ignored, what type of rhythm would be present

• basal heart rate

• resting heart rhythm

• reentry dysrhythmia

• underlying rhythm

A patient has an accelerated junctional rhythm. When you record the ECG, the tracing shows that P waves come after the QRS complexes. What is the PR interval?

• interval cannot be determined

• 0.12 second

• greater than 0.20 seconds

• 0.10 second

What is primary difficulty in classifying an SVT

• determining the origin of the tachycardia

• determining the patient's ventricular heart rate

• measuring the QRS complex

• identifying the delta waves

Which of the following originates from the AV junction?

• atrial flutter

• premature atrial complex

• junctional escape rhythm

• sinus bradycardia

What is the term for an ectopic focus originating about the ventricles in the atria or junctional region?

• an escape rhythm

• supraventricular

• ventricular

• a heart block rhythm

What symptom might a stable patient complain about when experiencing SVT?

• back pain

• chest pain

• palpitations

• edema