CCRN Study Guide Questions and Answers 2026

CCRN Study Guide Questions and Answers 2026 A patient in the ED with complaints of chest pain. The 12-lead EKG shows ST elevation in leads V3 and V4. Occlusion of the affected coronary artery most likely would affect perfusion to which portion of the conduction system? A. Sinoatrial (SA) node B. Bachmann's bundle C. Atrioventricular (AV) node D. Bundle of His - Correct Answer LAD so D. bundle of his Which of the following is the preferred lead for ST segment monitoring for a patient with a suspected RCA occlusion? A.I B. aVR C. III D. V1 - Correct Answer c. III Which of the following is not a manifestation of hypertrophic cardiomyopathy? A. Syncope B. Murmur that increases with squatting C. Chest pain D. Sudden cardiac death - Correct Answer *B Classic manifestations of hypertrophic cardiomyopathy are chest pain, syncope, and an aortic stenosis type of murmur that decreases when the patient is in a squatting position. The first manifestation of this condition is occasionally sudden cardiac death during exercise. In which quadrant is the mean QRS complex axis located if the QRS complex is predominantly positive in lead I and negative in lead aVF?