EKG EXAM Questions & Answers Correct 100%

Which of the following is NOT considered a "WHO" criteria for the diagnosis of myocardial infarction? - Answer History of congestive heart failure The EKG machine is properly standardized if 1mV produces a deflection of: - Answer 10mm The EKG records the: - Answer Electrical activity of the heart The following valves are called semilunar because they have half-moon shaped cusps: - Answer Aortic and pulmonic valves The stylus marks the EKG paper by using: - Answer Heat Which of the following is correct regarding the flow of blood? - Answer The pulmonary veins carries oxygenated blood from the lungs to the heart Which limb sensor is the reference or ground electrode? - Answer Right leg The first heart sound (S1) is produced by the closure of which of the following heart valves? - Answer Tricuspid and mitral valve The second heart sound (S2) is produced by the closure of which of the following heart valves? - Answer Pulmonic and aortic valve The number of R waves in the six-second strip is 9. The heart rate is: - Answer 90 beats/minute Which of the following statements is correct about the Q wave? - Answer A height greater than 25% of the height of the R wave in a given lead is abnormal A normal PR interval should measure: - Answer 0.12 - 0.20 seconds Duration of ventricular systole is measured: - Answer From the beginning of Q wave to the end of S wave The horizontal axis represents: - Answer Time This represents time it takes for electrical impulse to travel from the atria to the AV node, bundle of His, bundle branches, and the Purkinje fibers. - Answer QT interval The proper electrode placement for Holter monitoring is: - Answer Trunk of the body A decrease in the amount of blood flow discomfort is called: - Answer Angina Which a. of the following is an indication for stress testing? - Answer Evaluation of chest pain in a patient with normal baseline EKG Which of the following is considered a negative Holter? - Answer No significant arrhythmias or ST changes Patients on digitalis require constant monitoring for signs and symptoms of toxicity. Which of the following is not a sign/symptom of toxicity? - Answer Seizures Which of the following is considered the drug of choice for the suppression of ventricular tachycardia and ventricular flutter? - Answer Lidocaine Which of the following is not an action of beta blockers? - Answer Increases myocardial oxygen consumption Which of the following is correct regarding stress testing? - Answer The test can be performed through exercise While performing an exercise stress test, your patient reports mild chest pain and is obviously short of breath. Which of the following is the correct response to your observations? - Answer Terminate the stress test The normal running speed of the EKG paper is: - Answer 25 mm/second Which of the following has a tendency for abuse and addiction? - Answer Morphine sulfate