ECG Analysis & Rhythm Recognition (Relias) 2026 – 18 Questions & Answers | Atrial Fibrillation, Atrial Flutter, AV Blocks, PVCs & ECG Interpretation | Nursing & Cardiac Monitoring

This document contains approximately 18 exam-style questions and verified answers covering the essential principles of ECG rhythm recognition, cardiac conduction analysis, arrhythmia identification, and rhythm-strip interpretation. The material provides a concise yet comprehensive review of common cardiac dysrhythmias, ECG interval measurements, conduction abnormalities, and patient assessment principles frequently tested in nursing, telemetry, and cardiac monitoring examinations. It serves as an effective study resource for students preparing for ECG competency tests, telemetry certifications, cardiovascular nursing coursework, and healthcare professional development programs. The document begins with a review of ECG fundamentals and cardiac conduction measurements, including the PR interval, QRS complex duration, atrial depolarization, ventricular depolarization, and standard ECG paper interpretation. Students learn normal ECG values, such as the PR interval range of 0.12–0.20 seconds and normal QRS duration criteria, while developing an understanding of how electrical impulses travel through the heart's conduction system. The material reinforces foundational concepts necessary for accurate rhythm interpretation and electrocardiographic analysis. A substantial portion of the content focuses on atrial arrhythmias and rhythm recognition, including atrial fibrillation, atrial flutter, and multifocal atrial tachycardia (MAT). Students learn to identify hallmark ECG characteristics such as irregularly irregular R-R intervals, absent discernible P waves, fibrillatory activity, sawtooth flutter waves, and rapid atrial rates ranging from 250 to 400 beats per minute. The document also explores clinical factors associated with sinus tachycardia, including anxiety, fear, and pain, helping learners connect rhythm interpretation to patient presentation and physiologic responses. The resource also provides detailed coverage of atrioventricular (AV) conduction disorders and ventricular rhythms. Topics include Third-Degree (Complete) Heart Block, Second-Degree AV Block Type I (Mobitz I/Wenckebach), premature ventricular contractions (PVCs), and idioventricular rhythms. Students review ECG findings such as progressively lengthening PR intervals, dropped QRS complexes, AV dissociation, wide QRS complexes, and ventricular-origin rhythms. The material further examines common causes of ventricular ectopy, including hypokalemia, and explains the significance of ventricular conduction abnormalities in clinical practice. Additionally, the document integrates ECG interpretation with patient assessment and clinical evaluation, emphasizing the importance of determining whether a patient is tolerating a rhythm based on blood pressure, level of consciousness, and overall hemodynamic stability. Learners are introduced to practical monitoring concepts, including lead placement, rhythm assessment, and interpretation of clinical findings alongside ECG tracings. This approach reflects real-world telemetry and bedside monitoring practices used in acute care, emergency medicine, and cardiovascular nursing settings. The content closely aligns with leading cardiovascular education resources, including Dale Dubin's Rapid Interpretation of EKG's, Marriott's Practical Electrocardiography, Garcia and Holtz's 12-Lead ECG: The Art of Interpretation, Hampton's The ECG Made Easy, the Relias ECG Analysis and Rhythm Recognition Training Program, and the American Heart Association (AHA) ACLS and BLS Guidelines. These references are widely used in nursing education, cardiovascular technology programs, telemetry training, emergency medicine, and allied health curricula. This document is particularly valuable for students enrolled in Nursing (RN, BSN, ADN, LPN/LVN), Electrocardiography (ECG/EKG Technician), Cardiovascular Technology, Paramedic Science, Emergency Medical Services (EMS), Respiratory Therapy, Critical Care Nursing, Medical Assisting, Health Sciences, and Telemetry Monitoring courses. It is also highly beneficial for telemetry technicians, monitor technicians, emergency department personnel, ICU clinicians, ACLS candidates, cardiovascular technologists, and healthcare professionals seeking to strengthen their ECG interpretation and rhythm recognition skills. Keywords: ECG analysis, rhythm recognition, Relias ECG, ECG interpretation, EKG interpretation, atrial fibrillation, atrial flutter, multifocal atrial tachycardia, sinus tachycardia, sinus bradycardia, third degree heart block, Mobitz I, AV block, idioventricular rhythm, premature ventricular contractions, PVCs, hypokalemia, PR interval, QRS complex, ventricular depolarization, atrial depolarization, cardiac conduction system, cardiac monitoring, telemetry nursing, ECG technician exam, arrhythmia recognition, cardiovascular nursing, ACLS preparation, rhythm strip interpretation, ECG exam prep