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Chapter 49

Clinical 3

QuestionAnswer
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? Electroneurography
Which of the following measures and evaluates a patient's lung capacity and volume? Pulmonary function test
Where does the transmission of electrical impulses in the heart begin? SA node
Which of the following is the primary pacemaker of the heart? Purkinje fibers
Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction? depolarization
Which of the following is a record of the waves of electrical impulses responsible for the cardiac cycle? electrocardiogram
The instrument that measures and displays the electrical impulses responsible for the cardiac cycle is a(n) ____. electrocardiograph
The electrical impulses responsible for the cardiac cycle that appear on an electrocardiogram as peaks and valleys are called ____. deflections
The different views recorded on an electrocardiogram that are produced by the electrical activity of the heart are ____. leads
Which of the following is a pen-like instrument that records impulse movement on the ECG paper? stylus
Which of the following is an erroneous mark or defect that may appear on an ECG strip? artifact
Which of the following is appropriate when preparing the room and equipment for an electrocardiogram? Select a room in which all electrical equipment is turned off
Which communication would alleviate a patient’s anxiety about having an electrocardiography? Encourage the patient to ask questions and verbalize her concerns
Possible causes for a wandering baseline are ____. poor skin preparation, dangling wire, or breathing movement
Which precordial electrode is located by counting to the fourth intercostal space to the right of the sternum? V1
Which precordial electrode is placed in the fourth intercostal space to the left of the sternum? V2
Which precordial electrode is placed in the fifth intercostal space, where it intersects an imaginary line drawn straight down the middle of the clavicle? V4
Which precordial electrode is placed in the fifth intercostal space, directly below the middle of the armpit? V6
If a lead does not appear on an ECG tracing, what step should be taken before repeating the tracing? Reconnect the wire
Which test is utilized to measure the heart’s conduction system during exercise, when the demand for oxygen is increased? Stress testing
Which of the following is used to assess the electrical activity of a patient's heart over a 24-hour period of normal activity? holter monitoring
Which of the following results in a flat line on the ECG tracing? detached/loose wire
Which of the following would be included in the patient’s instructions regarding a Holter monitor test? Instruct the patient to record all activities, emotions, symptoms, and medications taken
The greatest volume of air that can be expelled when a person performs a rapid, forced expiration is the ____. forced vital capacity
Which of the following is a measurement taken to determine the amount of air that can be quickly forced from the lungs? Peak expiratory flow rate
The deflections that occur on an ECG are labeled with the letters ____. P, Q, R, S, T, and U
Which of the following is a small upward curve that represents the sinoatrial node impulse, wave of depolarization through the atria, and resultant contraction? P wave
Which of the following represents the time it takes for the ventricles to contract and recover, or repolarize? Q-T interval
Which of the following represents the time between contraction of the ventricles and recovery? S-T segment
The time it takes for electrical impulses to travel from the SA node to the AV node is the P-R interval
Which of the following refers to the contraction of the ventricles following depolarization? QRS complex
The impulse that travels through both ventricles is the ____. S wave
Which control is used to adjust the position of the stylus on the ECG? centering control
Which of the following is a correct statement about the stylus temperature control? A higher temperature produces a heavier line.
Electrodes for limb leads should be attached to ____. fleshy portions of the limbs
If a patient is uncomfortable lying flat on the examining table for an ECG test, he can be placed in the ____. supine position
Which of the following can prevent a wandering baseline? Be sure the skin is prepared adequately
The ____ send(s) out electrical impulses to initiate depolarization. bundle of his
Which of the following is a life-threatening dysrhythmia that results in no cardiac output Bundle branch block
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? PVCs
The dysrhythmia in which P waves cannot be identified because of rapid multiple electrical signals that fire from areas of the atria other than the SA node is known as ____. atrial fibrillation
Which of the following delays the electrical impulse to give time for the atria to complete contraction and the ventricles to fill? AV node
Which of the following measures the patient's response to a constant or increasing workload? exercise ECG
How do you prepare patients for spirometry? wear nose clip
Which of these is a component of an acceptable maneuver for spirometry? minimum of 6 seconds
Which peak flow zone indicates that large airways are beginning to narrow? yellow zone
The peak flow zone that requires immediate medical treatment is the ____. red zone
If the patient has good control of her asthma, her peak flow rate is in the ____, green zone
When using pulse oximetry long-term, you should move the sensor to a new site every ____. 4 hours
Created by: bnickcol
 

 



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