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Chapter 8
EKG
| Question | Answer |
|---|---|
| 1. What is the cause of a heart block dysrhythmia? | B. The electrical current has difficulty traveling down the normal conduction pathway |
| 2. Which of the following statements best describes first degree heart block? | C. The electrical current is delayed or blocked along normal conduction pathways at or above the AV junction |
| 3. Which heart block rhythm has a constant PR interval that measures greater than 0.20 second? | A. First degree AV block |
| 4. What is the heart rate range for first degree heart block? | B. 60 to 100 beats per minute |
| 5. Which heart block dysrhythmia has regular P-P and R-R intervals that both occur at the same rate? | D. First degree heart block |
| 6. Identify the following rhythm: | C. First degree AV block |
| 7. The observation guidelines used to assess the blood supply to the vital organs of the body to maintain normal function are called: | A. Cardiac output parameters |
| 8. What symptoms would you observe in a patient with first degree AV block? | B. The patient should have normal cardiac output and no symptoms |
| 9. An impulse that occurs too soon after the preceding impulse, causing a period when no other impulses can occur in the ventricles, is known as: | C. Blocked or nonconducted impulse |
| 10. Who FIRST discovered the two different types of second degree heart block? | D. Dr. Woldemar Mobitz: was a German internist in the early twentieth century |
| 11. Which heart blocks are the only blocks with an irregular ventricular response? | B. Second degree heart blocks |
| 12. Which of the following heart block dysrhythmias is identified by a repetitious prolonging PR interval pattern after each blocked QRS complex? | B. Second degree heart block, type II |
| 13. Which of the following is a characteristic of P-P intervals in all heart block dysrhythmias? | A. Regular |
| 14. Frequent nonconducted QRS complexes are likely to cause signs of: | B. Low cardiac output |
| 15. Second degree heart block, type I is usually due to: | D. Inflammation around the AV node |
| 16. With second degree AV block, type I: | A. The PR intervals get progressively shorter |
| 17. Identify the following rhythm: | C. Second degree AV block, type I |
| 18. Which heart block dysrhythmia is known as the "classical heart block"? | D. Second degree AV block, type II |
| 19. Which of the following heart block dysrhythmias is identified by missing QRS complexes and a consistent PR interval measurement? | A. Second degree AV block, type II |
| 20. With second degree AV block, type II: | B. A QRS complex follows each P wav |
| 21. Which of the following rhythms has a constant PR interval for all conducted beats? | C. Second degree AV block, type II |
| 22. Which type of heart block tends to progress quickly to third-degree AV block or complete heart block? | B. Second degree AV block, type II |
| 23. How do you distinguish between second degree AV blocks, type I or type II? | B. The ventricular rate is greater than 60 bpm with type II |
| 24. Which heart block dysrhythmia is highly unstable and considered a critical condition? | C. Second degree AV block, type II |
| 25. After you report the second degree AV block, type II, to a licensed practitioner, you should prepare for: | A. A Code Blue situation and application of a temporary pacemaker |
| 26. When would you use the mnemonic "Lengthen, Lengthen, drop equals Wenckebach"? | C. To determine the difference between a second degree type I or type II heart block |
| 27. Which heart block dysrhythmia is known as complete heart block (CHB)? | D. Second degree AV block, type II |
| 28. Which of the following heart block dysrhythmias is identified by regular P-P and R-R intervals that are firing at two distinctly different rates? | A. Third degree AV block |
| 29. In which heart block dysrhythmia would the patient probably be unconscious and require immediate medical intervention? | D. Third degree AV block |
| 30. QRS complexes that measure 0.12 second or greater with a rate between 20 and 40 bpm indicate that the impulses causing ventricular depolarization are coming from the: | C. Purkinje fibers |
| 31. The condition in which the atria and ventricles are electrically separated from one another is often referred to as: | A. Atrial kick |
| 32. Identify the following rhythm: | C. Third degree AV block |
| 33. Your responsibilities to care for a patient with complete heart block include: | A. Observing the patient for symptoms of low cardiac output B. Reporting any signs and symptoms to the licensed personnel C. Initiating emergency procedures if needed D. All of these <--- |
| 34. In which heart block dysrhythmia are ALL electrical impulses originating above the ventricles blocked and prevented from reaching the ventricles? | B. Third degree AV block |
| 35. With first degree heart block: | A. The PR intervals are greater than 0.20 seconds in duration |
| 36. In which of the heart block dysrhythmias are there more P waves than QRS complexes? | A. Second degree AV block, type I |
| 37. In third degree AV block, if the impulse causing ventricular depolarization is coming from the AV junction, the rate will be: | C. 40 to 60 beats per minute |
| 38. What indicates whether the heart block is low, in the bundle of His, or higher, in the area of the AV tissue? | A. The ventricular rate and QRS configurations |
| 39. Which heart block dysrhythmia has a PR interval that gets progressively longer until the QRS is dropped, and after the blocked beat, the cycle starts again? | B. Second degree AV block, type I |
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