Echelon Pt 2 Rhythms questions with correct answers

2nd degree block type II - Correct Answer-ECG strip that shows regular atrial rhythm, an atrial rate greater than ventricular rate (some QRS complexes are dropped) and a constant PR interval when the atrial and ventricular complexes appear together would most likely be identified as what rhythm? The ventricles are being stimulated during the relative refractory period - Correct Answer-Why is the R-on-T premature ventricular complex (PVC) of major concern? B. Multifocal premature ventricular complexes - Correct Answer-What are premature ventricular complexes (PVCs) that arise from several irritable sites called? A. Unifocal premature ventricular complexes B. Multifocal premature ventricular complexes C. Premature ventricular complex couplet D. Trigeminal premature ventricular complexes B. 30 seconds - Correct Answer-What period of time defines a sustained ventricular tachycardia? A. 2 seconds B. 30 seconds C. 120 seconds D. 300 minutes A. 2nd degree heart block type II - Correct Answer-The P wave is never hidden in which one of the following rhythms? A. 2nd degree heart block type II