EKG and Cardiovascular Testing NHA Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

EKG and Cardiovascular Testing NHA Questions and Answers | Latest Version | 2025/2026 | Correct & Verified Which rhythm appears as a prolonged PR interval on the EKG? First-degree heart block Which rhythm is characterized by a consistent dropping of QRS complexes? Second-degree heart block, type II Which rhythm shows more P waves than QRS complexes? Second-degree AV block Which cardiovascular test is used to measure oxygen saturation and pulse rate? Pulse oximetry Which lead placement provides a lateral view of the heart? Leads I, aVL, V5, and V6 2 Which rhythm is a fast heart rate originating in the ventricles? Ventricular tachycardia Which cardiovascular test uses electrodes on the chest to evaluate heart rhythm continuously? Telemetry monitoring Which rhythm shows a regular rate with narrow QRS and no visible P waves during episodes? Supraventricular tachycardia (SVT) Which cardiovascular test measures blood pressure changes in response to posture? Tilt-table test Which rhythm is identified by inverted P waves in lead II? Junctional rhythm Which rhythm shows alternating high and low amplitude QRS complexes? Electrical alternans 3 Which rhythm shows rapid atrial activity with variable conduction to ventricles? Atrial fibrillation with rapid ventricular response What is the first step before performing any cardiovascular test on a patient? Verify patient identity and explain the procedure Which test measures the electrical activity of the heart over a 24-hour period? Holter monitor What does the QRS complex on an EKG represent? Ventricular depolarization Which lead is commonly used to monitor for arrhythmias continuously? Lead II What is the purpose of an exercise stress test? To evaluate heart function and detect ischemia during physical activity 4 Which cardiovascular test records the heart’s electrical activity from multiple angles? 12-lead EKG What is the normal duration of the PR interval? 0.12–0.20 seconds