Term
55. Which of the follwoing is CORRECT in regard to diastole?
a. The tricuspid and mitral valves are closed; the aortic and pulmonic valves are open
b. It is a phase of the cardiac cycle when the myocardium contracts
c. It is a phase that is approximately twice as long as systole
d. None of the above is true |
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Definition
| c. It is a phase that is approximately twice as long as systole |
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Term
56. The term inotropic refers to the:
a. heart rate
b. contractile force
c. Automaticity
d. none of the above |
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Definition
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Term
57. 12-lead ECG is obtained by placing ______ electordes on the body:
a. 6
b. 8
c. 10
d. 12 |
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Definition
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Term
58. Which of the following is FALSE regarding the components of the electrocardiogram?
a. Intervals are measured in feactions of seconds
b. Waveforms captured on ECG paper have three primary characteristics:amplitude, duration, and configuration
c. the first half of the P wave reflects right atrial depolarization
d. the absolute refractory period is represented by the second half of the T wave |
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Definition
| d. The absolute refractory period is represented by the second half of the T wave |
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Term
59. which of the following is/are CORRECT with regard to the QRS complex?
a. has a normal duration in excess of 0.12 seconds
b. Produces a 50-100mV electrical signal
c. Marks the approximate beginning of mechanical systole
d. B and C |
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Definition
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Term
60. which of the following is/are FALSE in regard to the electrical axis of the QRS complex?
a. The QRS complex s always upright in V1-V6
b. The axis is abnormal if the QRS complex is upright in leads I and AVF
c. The QRS complex will be negative in leads I and AVF if the axis is between 0 and 90 degrees
d. All of the above |
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Definition
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Term
61. QT interval measuring can help in the diagnosis of?
a. hyperkalemia
b. atrial enlargement
c. hypothermia
d. All of the above |
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Definition
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Term
62. Which of the following statements is/are CORRECT regarding how to differentiate a right bundle branch block (RBBB) from a left bundle branch block?
a. RBBB has a characteristic RSR pattern in V1
b. RBBB has a characteristic QS pattern in V1
c. RBB has a negative deflection of the QRS, while LBBB has a positive deflection
d. AOTA |
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Definition
| a. RBBB has a characteristic RSR pattern in V1. |
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Term
63. which of the following statesments is/are CORECT regarding right atrial hypertrophy?
a. is often associated with Right ventricular hypertrophy
b. is often associated with tall, wide P wave morphology
c. Results from congenital heart disease or pulmonary hypertension
d. AOTA |
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Definition
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Term
64. To interpret the heart rhythm, the ICD:
a. takes approximately 30 seconds to analyze the rhythm
b. considers rate, onset of rate increase, and stability of the complex
c. Requires placement of 2 endocardial leads in the right and left atria
d. AOTA |
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Definition
| b. considers rate, onset of rate increase, and stability of the complex |
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Term
65. Which of the followng is FALSE in regard to the deactivation of an ICD?
a. a critical care transport team can deactivate the device without a physician's order
b. deactivation requires the use of a magnet
c. the margins of the ICD should be palpated to determine precise location before deactivation
d. synchronous tones indicate the device is tracking the R wave |
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Definition
| a. a critical care transport team can deactivate the device without a physician's order |
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Term
66. Failure of a pacemaker to achieve electrical capture can be caused by:
a. lead dislodgement
b. Battery depletion
c. Loose pacemaker connections
d. AOTA |
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Definition
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Term
67. In regard to the proper positioning of the intra-aortic balloon, which of the following is/are CORRECT:
a. is often achieved by using the Seldinger technique for catheter placement
b. Requires balloon placement in the abdominal aorta, beneath the renal arteries
c. Requires balloon placement in the thoracic aorta, distal to the left subclavian artery
d. B and C |
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Definition
| c. requires balloon placement in the thoracic aorta, distal to the left subclavian artery |
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Term
68. Which of the following is CORECT in regard to the proper timing of the balloon pump?
a. a patient with a heart rate of 80 bpm requires a bloon inflation during diatole for 1450-1500 msec
b. an arterial catheter must be in place to monitor timing
c. the dicrotic notch identifies the point of balloon deflation during systole
d. the final step in timing is the identification of the beginning of systole and diastole on the arterial waveform |
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Definition
| b. an arterial catheter must be in place to monitor timing |
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Term
69. which of the following is/are a complication associated with IABPs?
a. arterial insufficiency
b. Infection
c. Gas embolism
d. AOTA |
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Definition
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Term
70. Which of the following describes the therapeutic effects of IABP use?
a. Balloon inflation decreases the coronary artery perfusion pressure during diastole
b. Balloon deflation increases blood flow during diastole
c. IABP can positively affect afterlaod, preload, and rate.
d. B and C |
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Definition
| C. IABP can positively affect afterload, preload, contractility, and rate. |
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Term
71. Which of the following is/are CORRECT in regard to diastolic augmentation?
a. the diastolic waveform may not be larger than the systolic waveform
b. Augmentation helps increase coronary perfusion
c. Augmentation occurs with inflation of the IAB during diastole
d. AOTA |
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Definition
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Term
72. Which of the followin statements is/are CORRECT in regard to the proper positioning of the intra-aortic balloon?
a. is often achieved by using the Seldinger technique for catheter placement
b. Requires balloon placement beneath the renal arteries
c. requires balloon placement in the thoracic aorta, distal to the left subclavian artery
d. B and C |
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Definition
| c. Requires balloon placement in the thoracic aorta, distal to the left subclavian artery |
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