Practice Test 1 CCRN (Pass CCRN)
Questions and Correct Answers | Latest
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What is vasogenic cerebral edema?
✓ -:- Vasogenic cerebral edema is an incr ease in extracellular fluid caused
by a breakdown of the blood-brain barrier with the resultant increase in
vascular permeability. This cerebral edema begins locally and becomes
more generalized. Common causes are trauma (including surgical trauma),
tumors, hemorrhage, and abscesses
What ventilator parameter indicates fluid volume excess?
✓ -:- An A:a gradient greater than 10 mm Hg is a reflection of a diffusion
defect. Note that the process of diffusion is between A (alveolus) and (a)
arterial blood. An increase in intraalveolar fluid dilutes and inactivates
surfactant, causing alveolar collapse (decreasing vital capacity) and
decreases lung compliance. Peak inspiratory pressure increases reflect a
decrease in lung compliance
What does autonomy refer to?
✓ -:- The patient's right to make decisions for themselves
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What does beneficence mean?
✓ -:- Obligation to do good
What does nonmaleficence mean?
✓ -:- Obligation to do no harm
What does fidelity mean?
✓ -:- the obligation to abide by agreements and responsibilities
What does veracity mean?
✓ -:- The obligation to tell the truth
What are Diagnosis-Related groups?
✓ -:- DRGs constitute a prospective payment program for Medicare
patients. Payment is based on primary and secondary diagnosis, primary
and secondary procedures, age, and length of hospitalization
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BNP is secreted in response to?
✓ -:- Ventricular wall stretch
What are omnious signs in a patient with status asthmaticus?
✓ -:- A normalization or increase in the PaCO2. This patient is still
tachypneic, and if ventilation is normal, PaCO2 should be decreased. The
other ominous sign in this patient would be absence of wheezing or
rhonchi, because they would indicate that ventilation is insufficient to
cause these noises.
What problems arise from losses from the GI tract?
✓ -:- Any loss results in hypokalemia. Vomiting results in loss of acidic
contents, whereas losses below the pylorus result is alkalitic losses
leading to metabolic acidosis. Fluid is se questered in the intestine leading
to hypovolemia, which could cause hypovolemic shock.
Actual problems are worse than potential problems!!
✓ -:-
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How can you differentiate the cause of jaundice?
✓ -:- An increase in direct bilirubin is associated with biliary obstruction
because direct bilirubin is conjugated. An increase in indirect bilirubin is
associated with hepatic disease or excessive hemolysis because indirect
bilirubin is unconjugated
What antihypertensive meds work best in African american patients?
✓ -:- African-Americans do not respond well to angiotensin -converting
enzyme inhibitors (e.g., captopril [Capoten]), but they do respond well to
an angiotensin II blocker (valsartan [Diovan]). Of th e beta-blockers,
labetalol works best. Of the calcium channel blockers, diltiazem works
best
What lab values define acute respiratory failure?
✓ -:- 50-50!
PaO2<50 and/or PaCO2>50
Hyperkalemia can cause what?
✓ -:- Diarrhea-increases gastric motility
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