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FREE AND STUDY GAMES ABOUT CHAPTER 49 EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -49 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Which of the following is used to assess the electrical activity of a patient's heart over a 24-hour period of normal activity?
Answer:
holter monitoring Question 2: Which of the following is a correct statement about the stylus temperature control?
Answer:
A higher temperature produces a heavier line.Question 3: Which precordial electrode is placed in the fifth intercostal space, where it intersects an imaginary line drawn straight down the middle of the clavicle?
Answer:
V4 Question 4: Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?
Answer:
depolarization
Question 5: Which of the following dysrhythmias is due to a heartbeat originating in the ventricles that occurs early in the cycle and is followed by a pause before the next cycle?
Answer:
PVCs
Question 6: Possible causes for a wandering baseline are ____.
Answer:
poor skin preparation, dangling wire, or breathing movement Question 7: Which control is used to adjust the position of the stylus on the ECG?
Answer:
centering control Question 8: If the patient has good control of her asthma, her peak flow rate is in the ____,
Answer:
green zone Question 9: Which peak flow zone indicates that large airways are beginning to narrow?
Answer:
yellow zone Question 10: Which of the following is a record of the waves of electrical impulses responsible for the cardiac cycle?
Answer:
electrocardiogram Question 11: Which of the following is a pen-like instrument that records impulse movement on the ECG paper?
Answer:
stylus Question 12: The time it takes for electrical impulses to travel from the SA node to the AV node is the
Answer:
P-R interval
Question 13: Which of the following is a small upward curve that represents the sinoatrial node impulse, wave of depolarization through the atria, and resultant contraction?
Answer:
P wave Question 14: Where does the transmission of electrical impulses in the heart begin?
Answer:
SA node Question 15: Which of the following is an erroneous mark or defect that may appear on an ECG strip?
Answer:
artifact Question 16: Which of the following is appropriate when preparing the room and equipment for an electrocardiogram?
Answer:
Select a room in which all electrical equipment is turned off
Question 17: Electrodes for limb leads should be attached to ____.
Answer:
fleshy portions of the limbs Question 18: The instrument that measures and displays the electrical impulses responsible for the cardiac cycle is a(n) ____.
Answer:
electrocardiograph Question 19: Which of the following would be included in the patient's instructions regarding a Holter monitor test?
Answer:
Instruct the patient to record all activities, emotions, symptoms, and medications taken
Question 20: Which of the following is a measurement taken to determine the amount of air that can be quickly forced from the lungs?
Answer:
Peak expiratory flow rate Question 21: Which of the following is the process by which a graphic pattern is created from the electrical impulses generated in the heart as it pumps?
Answer:
Electroneurography
Question 22: Which of the following can prevent a wandering baseline?
Answer:
Be sure the skin is prepared adequately Question 23: The ____ send(s) out electrical impulses to initiate depolarization.
Answer:
bundle of his Question 24: Which precordial electrode is placed in the fifth intercostal space, directly below the middle of the armpit?
Answer:
V6
Question 25: How do you prepare patients for spirometry?
Answer:
wear nose clip Question 26: Which precordial electrode is located by counting to the fourth intercostal space to the right of the sternum?
Answer:
V1 Question 27: Which of the following refers to the contraction of the ventricles following depolarization?
Answer:
QRS complex
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