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A patient is not hypoxemic if his pulse oximetry reading is ____ percent.


A) 94
B) 90
C) 97
D) 92
E) 89

F) A) and E)
G) A) and C)

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Which of the following represents the time it takes for the ventricles to contract and recover, or repolarize?


A) P-R interval
B) S-T interval
C) Q-T interval
D) U wave
E) QRS complex

F) C) and E)
G) B) and E)

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Which of the following is an erroneous mark or defect that may appear on an ECG strip?


A) Electrolyte
B) Deflection
C) Stylus
D) Lead
E) Artifact

F) B) and C)
G) B) and E)

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If the patient has good control of her asthma, her peak flow rate is in the ____,


A) green zone
B) yellow zone
C) red zone
D) blue zone
E) orange zone

F) C) and E)
G) B) and E)

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The cardiac ________ is regulated by specialized tissues in the heart wall that transmit electrical impulses and cause the heart muscle to contract and relax.

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Which of the following results in a flat line on the ECG tracing?


A) Poor skin preparation
B) Dirty electrodes
C) Detached/loose wire
D) Muscle movement
E) Electrical interference

F) A) and E)
G) None of the above

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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?


A) Electroencephalography
B) Electromyography
C) Electrocardiography
D) Electroneurography
E) Electrogastrography

F) A) and D)
G) C) and D)

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Which of the following is the primary pacemaker of the heart?


A) AV node
B) Bundle of His
C) SA node
D) Purkinje fibers
E) Bundle branches

F) None of the above
G) B) and C)

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Calibration of a spirometer requires the use of a standardized measuring instrument called a(n) calibration ________ and should provide a reading on the spirometer within 3% of the stated volume.

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Which of the following assesses the heart's conduction system during exercise, when the demand for oxygen is increased?


A) Holter monitoring
B) Electrocardiography
C) Pulmonary function test
D) Stress testing
E) Encephalography

F) A) and E)
G) C) and D)

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This arrhythmia is ________ and is caused by rapid, multiple electrical signals that fire from areas in the atria other than the SA node.

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Which peak flow zone indicates that large airways are beginning to narrow?


A) Green zone
B) Yellow zone
C) Red zone
D) Blue zone
E) Orange zone

F) B) and D)
G) A) and D)

Correct Answer

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A(n) ________ is an instrument that measures and displays the impulses responsible for the cardiac cycle.

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The time it takes for electrical impulses to travel from the SA node to the AV node is the ____.


A) S-T segment
B) Q wave
C) R wave
D) P-R interval
E) Q-T interval

F) C) and D)
G) A) and B)

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An instrument used to measure the air taken in by and expelled from the lungs is the ____.


A) peak flow meter
B) calibration syringe
C) spirometer
D) stylus
E) respirator

F) C) and E)
G) B) and C)

Correct Answer

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Which of these is a life-threatening arrhythmia that results in no cardiac output?


A) Atrial fibrillation
B) PVCs
C) Ventricular fibrillation
D) Bundle branch block
E) Ventricular tachycardia

F) B) and D)
G) C) and D)

Correct Answer

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A physician will order a(n) ________ function test to evaluate a patient's lung volume and capacity.

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The type of echocardiography in which the speed and direction of blood flow through the heart can be assessed is ________ echocardiography.

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A test used to measure breathing capacity is called ________.

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Which of the following would you include when preparing the room and equipment for an electrocardiogram?


A) Select a room in which all electrical equipment is turned off
B) Perform the procedure in an X-ray department
C) Place the patient on a metal table
D) Set the room's temperature control to a very cool setting
E) Check the ECG paper after preparing the patient

F) C) and D)
G) A) and C)

Correct Answer

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