HESI RN
Biology Practice Test
1. What is located on the rough endoplasmic reticulum?
- A. Microvilli
- B. Mitochondria
- C. Lysosomes
- D. Ribosomes
Correct answer: D
Rationale: The rough endoplasmic reticulum is studded with ribosomes, not microvilli, mitochondria, or lysosomes. Ribosomes are responsible for protein synthesis, making them an essential component of the rough endoplasmic reticulum.
2. When emptying 350 mL of pale yellow urine from a client's urinal, the nurse notes that this is the first time the client has voided in 4 hours. Which action should the nurse take next?
- A. Record the amount on the client's fluid output record.
- B. Encourage the client to increase oral fluid intake.
- C. Notify the healthcare provider of the findings.
- D. Palpate the client's bladder for distention.
Correct answer: A
Rationale: The nurse should record the amount on the client's fluid output record because the 350 mL of pale yellow urine is a normal finding. This indicates appropriate urine output, so encouraging increased fluid intake or notifying the healthcare provider is not necessary at this time. Additionally, palpating the client's bladder for distention is not indicated based on the normal urine output observed.
3. A 7-year-old is admitted to the hospital with persistent vomiting, and a nasogastric tube attached to low intermittent suction is applied. Which finding is most important for the nurse to report to the healthcare provider?
- A. Gastric output of 100 mL in the last 8 hours.
- B. Shift intake of 640 mL IV fluids plus 30 mL PO ice chips.
- C. Serum potassium of 3.0 mEq/L.
- D. Serum pH of 7.45.
Correct answer: C
Rationale: A serum potassium level of 3.0 mEq/L is significantly low and indicates hypokalemia, which can lead to serious complications such as cardiac arrhythmias. Therefore, it is crucial for the nurse to report this finding promptly to the healthcare provider for immediate intervention. The other findings are not as critical in this situation. Gastric output of 100 mL in the last 8 hours may be expected in a patient with persistent vomiting. The shift intake of IV fluids and ice chips indicates fluid replacement, which is important but not as urgent as correcting electrolyte imbalances. A serum pH of 7.45 is within the normal range and does not indicate an immediate concern.
4. A client at 18-weeks gestation was informed this morning that she has an elevated alpha-fetoprotein (AFP) level. After the healthcare provider leaves the room, the client asks what she should do next. What information should the nurse provide?
- A. Inform her that a repeat alpha-fetoprotein (AFP) should be evaluated.
- B. Discuss options for intrauterine surgical correction of congenital defects.
- C. Reassure the client that the AFP results are likely to be a false reading.
- D. Explain that a sonogram should be scheduled for definitive results.
Correct answer: D
Rationale: An elevated alpha-fetoprotein (AFP) level in a pregnant client can indicate potential congenital anomalies in the fetus. A follow-up sonogram is necessary to provide definitive results and further evaluate the fetus for any possible abnormalities. Therefore, it is essential for the nurse to explain to the client that scheduling a sonogram is the next appropriate step to assess the fetal well-being and address any concerns regarding the elevated AFP level. Choices A, B, and C are incorrect because a repeat AFP test alone, discussing surgical correction of defects, or assuming the results are false without further evaluation are not appropriate responses when dealing with a potentially serious issue like elevated AFP levels in pregnancy.
5. A client is receiving 30 mg of enoxaparin subcutaneously twice a day. In assessing adverse effects of the medication, which serum laboratory value is most important for the nurse to monitor?
- A. Hemoglobin level
- B. Platelet count
- C. Activated partial thromboplastin time (aPTT)
- D. Prothrombin time (PT)
Correct answer: B
Rationale: The correct answer is B: Platelet count. Enoxaparin can cause heparin-induced thrombocytopenia (HIT), making it crucial to monitor the platelet count for signs of thrombocytopenia. Monitoring the platelet count helps in early detection of this serious adverse effect. Choices A, C, and D are less relevant in this context. Hemoglobin level checks are more indicative of bleeding issues rather than thrombocytopenia caused by enoxaparin. Activated partial thromboplastin time (aPTT) and prothrombin time (PT) are less impacted by enoxaparin and are not typically used to monitor for HIT.