CCMA EKG Review (NHA) Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

CCMA EKG Review (NHA) Questions and Answers | Latest Version | 2025/2026 | Correct & Verified Which lead is considered the standard reference for monitoring the heart’s electrical activity? Lead II. What is the normal range for an adult resting heart rate? 60–100 beats per minute. Which electrode placement is correct for V1 on a 12-lead EKG? Fourth intercostal space at the right sternal border. What does a P wave represent on an EKG tracing? Atrial depolarization. Which wave indicates ventricular depolarization? QRS complex. 2 What does the T wave represent on an EKG? Ventricular repolarization. Which lead is typically used to monitor for arrhythmias during stress testing? Lead II. What is the standard paper speed for an EKG tracing? 25 mm/sec. What is the normal duration of a PR interval? 0.12–0.20 seconds. Which EKG artifact is caused by patient movement? Somatic tremor. What is the normal duration of a QRS complex? 0.06–0.10 seconds. 3 Which electrode placement is correct for V6 on a 12-lead EKG? Fifth intercostal space at the midaxillary line. What should a CCMA do before placing electrodes on a patient’s chest? Clean the skin and remove oils or hair if necessary. Which rhythm is characterized by irregularly irregular R-R intervals with no distinct P waves? Atrial fibrillation. Which rhythm shows a sawtooth pattern on the EKG? Atrial flutter. Which rhythm has a prolonged PR interval greater than 0.20 seconds? First-degree AV block. What does ST segment elevation indicate? Possible myocardial infarction. 4 Which electrode placement is correct for V2? Fourth intercostal space at the left sternal border. Which rhythm shows widened QRS complexes and no P waves? Ventricular tachycardia. Which rhythm is identified by a chaotic baseline