Echelon Pt 2 Rhythms Questions and Answers with complete solution

Which is the correct intervention sequence for ventricular fibrillation? A. Access the patient; initiate CPR; administer epinephrine B. Access the patient; initiate CPR; defibrillate ASAP C. Access the patient; defibrillate; intubate D. Access the patient; synchronize cardioversion; CPR - ️️B. Access the patient; initiate CPR; defibrillate ASAP Ventricular rhythms have a QRS of 0.10 or greater due to which of the following? A. Atypical ventricular repolarization B. Ventricles are stimulated asynchronously C. Ventricles depolarize early D. Ventricular irritability - ️️B. Ventricles are stimulated asynchronously What rhythm is characterized by a conduction block between the atria and ventricles resulting in some nonconducted P waves (QRS complex drops) but fixed PR intervals when the P wave and QRS complex appear together? A. Bundle branch block (BBB) B. 2nd degree heart block type II C. 3rd degree heart block at bundle branch block level D. Idioventricular rhythm (IVR) - ️️B. 2nd degree heart block type II 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. Multifocal premature ventricular complexes What period of time defines a sustained ventricular tachycardia? A. 2 seconds B. 30 seconds C. 120 seconds D. 300 minutes - ️️B. 30 seconds The P wave is never hidden in which one of the following rhythms? A. 2nd degree heart block type II B. 3rd degree heart blockC. Junctional D. Supraventricular tachycardia (SVT) - ️️A. 2nd degree heart block type II Which is a key to differentiating 2nd degree block type I from type II? A. PR intervals B. P waves C. Rate D. Rhythm Correct - ️️A. PR intervals 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? - ️️2nd degree block type II The ECG monitor displays a normal-appearing rhythm but when you assess the patient they are unresponsive and pulseless. What rhythm would this be? A. Asystole B. Idioventricular C. Pulseless electrical activity (PEA) D. Ventricular fibrillation - ️️C. Pulseless electrical activity (PEA) What is the initial treatment for 3rd degree heart block? A. Amiodarone B. Digoxin C. Synchronized cardioversion D. Transcutaneous pacer - ️️D. Transcutaneous pacer Ventricular fibrillation is generally present with cardiac arrest and is most often brought on by myocardial ischemia. - ️️True Which three (3) are examples of supraventricular tachycardia (SVT)? A. Accelerated junctional B. Atrial fibrillation C. Atrial flutter D. Junctional tachycardia Correct - ️️B. Atrial fibrillation C. Atrial flutter D. Junctional tachycardia Correct Which is the correct intervention sequence for asystole? A. Assess the patient; initiate CPR; defibrillate ASAPB. Assess the patient; confirm rhythm in another lead; initiate CPR C. Assess the patient; confirm rhythm in another lead; synchronize cardiovert D. Confirm rhythm in another lead; assess the patient; initiate CPR - ️️B. Assess the patient; confirm rhythm in another lead; initiate CPR Which of the following is a possible cause for ventricular fibrillation (V-fib)? A. Anxiety B. Hypothermia C. Hyperthyroidism D. Myocardial ischemia - ️️D. Myocardial ischemia