CSE - RRT Exam || 2026 (Actual Exam) Questions
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cardiac What values does the PAP
pulmonary artery catheter measure?
Capabilities of the pulmonary artery -cardiac output
catheter: -pressures in the right side of the heart and in the
arteries of the lungs
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How will positive pressure ventilation -decrease cardiac output
affect the the reading of a -Positive pressure ventilation increases
pulmonary artery catheter? intrathoracic pressure (ITP), which increases right
atrial (RA) pressure, leading to a decrease in
venous return. Subsequently, this decreased right
ventricle (RV) filling decreases left ventricle (LV)
preload and allows for greater LV contraction with
decreased energy expenditure. In patients who are
volume overloaded, this could be beneficial.
However, in hypovolemic patients, this may induce
cardiovascular insufficiency [2, 3]. Therefore,
knowledge of the volume status of mechanically
ventilated patients is essential. On critically ill
patients, pulmonary artery catheters (PACs) can be
used for hemodynamic monitoring
How do you determine the integrity -CXR will confirm position
of a pulmonary artery catheter?
Elevated PCWP and mPAP can left heart failure (CHF) w/ pulmonary edema
indicate:
Spiked T waves can indicate: possible electrolyte imbalance
Is PCWP usually elevated with No
ARDS?
With acute Cor Pulmonale (right significantly increase
heart failure) will CVP increase or
decrese?
If patient is hypervolemic ___ will be CVP
elevated
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The elevation of the PCWP is the key
indicator of CHF (left heart failure),
which is an acceptable diagnosis.
However, the elevated mPAP, along
with the BS and general appearance,
indicated that the CHF is causing a
cardiogenic pulmonary edema which
is. a more comprehensive and better
response. cardiac sim 1
Treatment options for cardiogenic -Morphine
pulmonary edema: -Furosemide (Lasix)
-Increase O2 if hypoxic
How can SvO2 be measured? -Pulmonary artery catheter w/ a built in reflective
pulse oximeter.
-Current technology does not allow us to insert a
separate line within the normal 4-lumen catheter or
to insert a line in addition to the pulmonary artery
line
-if normal 4 lumen catheter is in place it will be
necessary to replace the current catheter w/ one
that has this specific capability
What is SVRI? -systemic vascular resistance index
-The physiological meaning of SVRI is the tension
or pressure that builds up in the wall of the left
ventricle during ejection.
Equation for SVRI: (MAP-CVP)/CI
SVRI normal 1970-2390 dynes .sec/cm5/m2
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MAP normal -mean arterial pressure)
-93-94 mmhg
MAP equation determined by taking the systolic pressure, adding
the diastolic pressure twice, and dividing by the
number 3 (heart spends twice as much time in
diastole than in systole)
CI normal -cardiac index
-2.5-4.0L/min/m2
CI equation cardiac output/body surface area (BSA)
Normal PCWP means ___ is working left heart
well
Elevated mPAP and CVP indicate the lungs and backing up into the right heart
problem is in the ____________
Normal cardiac index = good left heart function
Normal PCWP = good left heart function
Mildly elevated PVR = lung trouble
Sudden fall in PECO2 with a wide
disparity b/w that value and the
PaCO2 is a very strong indicator of
an increased alveolar deadspace
caused by a pulmonary embolism
and the hemodynamic values are
consistent with an circulatory
obstruction in the lungs sim 2
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