NHA EKG (CET) study guide (2021) UPDATED Question and answer

NHA EKG (CET) study guide (2021) UPDATED Question and answerWhat action should the technician instruct the patient to take if any electrodes become loose during at-home use of an ambulatory monitor? Apply surgical tape to the electrodes to keep them in place Which leads record activity of the inferior wall of the left ventricle? Leads III and AVF What rhythm is characterized by absent P waves, wide QRS complexes, and a ventricular rate between 20-40/mins? Idioventricular rhythm What leads record electrical activity of the lateral wall of the left ventricle? Leads I, V6, AVL, and V5 In which locations should the EKG technician place the electrodes for a 3-lead ambulatory monitor? on the right shoulder, the left shoulder, and the left abdomen An EKG technician is performing a stress test for a patient. What changes indicate that the patient is beginning to show signs of myocardial ischemia? Depressed ST segment What leads are bipolar? Leads I, II, and III What is the expected reference range for respiratory rate of a newborn patient? 30-49/min An EKG technician is providing instructions for a patient who is scheduled for an exercise stress test. What instructions should technician include? "You should avoid wearing shoes with high heels for this test." An EKG technician is preparing a patient for an exercise stress test. What statement should the technician make before this test? "This procedure requires informed consent." What is the final step when applying a Holter monitor? Document the procedure in the patient's health record An EKG technician prior to an exercise stress test. What statement by the patient indicates an understanding of the preparation? "I can smoke the night before the exam." A patient has a prescription to wear a Holter monitor for 24 hrs. What statement made by the patient indicates an understanding of home care instructions? "I should record spontaneous symptoms unrelated to an activity." After turning on the AED and attaching the AED to the patient, what should be done next? Stand clear from the patient and allow the AED to analyze In a healthy adult patient, what is the expected shape and direction of the P wave in lead II? rounded and upright What statement should an EKG technician include when preparing a patient for an upcoming exercise stress test? "Refrain from caffeine, smoking, or alcohol for at least 3 hours prior to the test." What lead is created between the left arm and left leg? Lead III What speed setting should the technician use for a standard 12-lead EKG for a patient experiencing an accelerated junctional rhythm? 25mm/second (a patient experiencing accelerated junctional rhythm has a heart rate of 60-100 min) An EKG technician is called to the emergency department to perform a standard 12-Lead EKG on a patient. When the technician arrives, the patient is attached to a 5-lead monitor. What action should the technician take? Remove the electrodes for the 5-lead monitor before attaching the electrodes for the 12-lead EKG The sinus arrest is considered a medical emergency when the arrest reaches what duration? 6 seconds What is the best method for an EKG technician to use when removing hair from electrode placement? Clippers What electrode is placed to the right of the patients sternum at the fourth intercostal space? Lead V1 What three leads are placed at the same horizontal level? Leads V4, V5, and V6 An interrupted baseline is most likely cased by______ Lead corrosion How should electrodes be explained to a pediatric patient? Stickers How should a patient be prepared for a scheduled 12- lead EKG? Use an alcohol pad to cleanse the electrode placement sites Why should a patient wear loose-fitting clothes while waring a Holter monitor? To reduce artifacts on the tracing What action should be taken when performing an EKG for a patient that doesn't speak the same language as the technician? Having a bilingual staff member translate What wave represents atrial depolarization? P wave What wave represents ventricular repolarization? T wave What complex is the result of ventricular depolarization? QRS complex Where is the lead MCL2 located? fourth intercoastal space to the left of the patient's sternum What lead groups represent Einthoven's Triangle? Leads I, II, and III