Nursing Certification Exam 3 EAQs: Ch.
65 - Hemodynamic Monitoring 2026/2027
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The nurse is monitoring a patient in ICU. Which ScvO 2/SvO 2 reading
should the nurse report to the primary health care provider?
68%
54%
72%
78% -- Verified--Solution----54%
Normal central venous oxygen saturation or ScvO 2/SvO 2 is 60% to
80%. It denotes normal oxygen supply and metabolic demand. Any
reading out of the normal range can cause danger to the patient. More
than 80% denotes increased oxygen supply and decreased oxygen
demand. Less than 60% denotes decreased oxygen supply and increased
demand.
The nurse is monitoring constant hemoglobin (SpO 2) levels for a
patient. What is the normal range of SpO 2, which indicates that the
saturation pressure of oxygen in this patient is adequate?
80-85%
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85-90%
90-95%
95-100% -- Verified--Solution----95-100%
Pulse oximetry is a noninvasive and continuous method of determining
the oxygen saturation of SpO 2. Monitoring SpO 2 may reduce the
frequency of arterial blood gas (ABG) sampling. SpO 2 is normally 95%
to 100%. A value less than that may indicate hypoperfusion.
The nurse is concerned about a patient's stroke volume. What
determining factors should the nurse consider when determining stroke
volume?
Preload, afterload, and contractility
Cardiac output, heart rate, and body surface area
Afterload, cardiac output, and mean arterial pressure
Cardiac index, mean arterial pressure, and blood pressure -- Verified--
Solution----Preload, afterload, and contractility
Preload, afterload, and contractility determine stroke volume (SV).
Cardiac output and heart rate are used to determine stroke volume;
however, body surface area is used to determine cardiac index. Mean
arterial pressure is used to determine afterload, not stroke volume.
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Cardiac index is a more precise measurement of the efficiency of the
heart's pumping action; it is not used to determine stroke volume.
A patient is experiencing cardiogenic shock after an acute myocardial
infarction. Why would an intraaortic balloon pump (IABP) be beneficial
for this patient?
Improves coronary artery vessel perfusion
Reduces pressure in the pulmonary artery
Enhances effectiveness of cardiac medications
Provides time to perform an emergency angiogram -- Verified--
Solution----Improves coronary artery vessel perfusion
Indications for intraaortic balloon pump (IABP) therapy include acute
myocardial infarction and cardiogenic shock. The use of the pump with
this health problem improves coronary artery vessel perfusion. The
pump is not used to reduce pressure in the pulmonary artery, provide
time to perform an emergent angiography, or to enhance the
effectiveness of cardiac medications.
What is the function of a transducer?
Helps locate the phlebostatic axis
Transmits electronic signal as a pressure wave
Converts pressure waves into an electronic signal
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Changes zero reference point to atmospheric pressure -- Verified--
Solution----Converts pressure waves into an electronic signal
The transducer functions to take pressure waves from catheters and
converts them into an electronic signal that is displayed on the monitor
from which readings are collected. It does not help locate the
phlebostatic axis; this landmark is used to level the transducer to the
atria. The transducer does not transmit electronic signals as pressure
waves; this is the opposite of how a transducer functions. The transducer
does not change zero reference point to atmospheric pressure. Zero
reference point is a landmark.
When performing a dynamic response test, the nurse observes the
following tracing. What action should the nurse perform based on this
tracing? -- Verified--Solution----Flush the line
Reconfirm zeroing
No action required
Reposition the wrist
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No action required
A dynamic response test is performed every 8 to 12 hours, as well as
when the system is opened to air or the accuracy of the measurements is
questioned. It involves activating the fast flush and checking that the
equipment reproduces a distortion-free signal. A square wave indicates a