The nurse preceptor is teaching a newly licensed nurse about blood flow through the heart.
The nurse preceptor knows teaching has been effective when the newly licensed nurse states that the upper chambers of the heart are:.
The thickest part of the heart.
Where blood leaves.
Where blood enters.
Called ventricles.
The Correct Answer is C
Choice A rationale:
The thickest part of the heart is not the upper chambers but the lower chambers, specifically the left ventricle. This is because it needs to pump blood to the entire body.
Choice B rationale:
Blood leaves the heart through the lower chambers, or ventricles, not the upper chambers.
Choice C rationale:
Blood enters the heart through the upper chambers, or atria. This is where deoxygenated blood from the body and oxygenated blood from the lungs first enter the heart.
Choice D rationale:
The term “ventricles” refers to the lower chambers of the heart, not the upper chambers.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The medication should be dropped into the conjunctival sac, which is the space between the lower eyelid and the eyeball. This is the correct method for administering ophthalmic drops.
Choice B rationale:
The eyedropper should not touch any part of the eye, including the sclera, to avoid contamination and potential infection.
Choice C rationale:
It is not necessary to don sterile gloves when administering ophthalmic drops. Clean gloves or hand hygiene is sufficient.
Choice D rationale:
Rubbing the eye after instilling medication can cause irritation and may disperse the medication, reducing its effectiveness.
Correct Answer is B
Explanation
Choice A rationale:
Metabolic alkalosis is incorrect because it would present with a high pH and high HCO3. This client’s pH is low, indicating acidosis, not alkalosis.
Choice B rationale:
Respiratory acidosis is correct. It is characterized by a low pH and high PaCO2, as seen in this client’s results. This condition occurs when the lungs can’t remove enough CO2, causing it to build up in the blood and lower the pH.
Choice C rationale:
Metabolic acidosis is incorrect because it would present with a low pH and low HCO3. This client’s HCO3 is normal.
Choice D rationale:
Respiratory alkalosis is incorrect because it would present with a high pH and low PaCO2. This client’s pH is low and PaCO2 is high.
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