HESI RN
HESI Medical Surgical Exam
1. After a session of hemodialysis, the nurse should monitor the client for which of the following complications of hemodialysis?
- A. Hyperkalemia.
- B. Hypotension.
- C. Infection.
- D. Fever.
Correct answer: B
Rationale: The correct answer is 'B: Hypotension.' Hypotension is a common complication of hemodialysis because fluid removal during the process can lead to a drop in blood pressure. The nurse should closely monitor the client for signs of hypotension such as dizziness, lightheadedness, or a decrease in blood pressure readings. Choice 'A: Hyperkalemia' is incorrect because hemodialysis actually helps lower potassium levels by removing excess potassium from the blood. Choice 'C: Infection' is incorrect as it is not a direct complication of hemodialysis but rather a risk associated with invasive procedures. Choice 'D: Fever' is incorrect as fever is not a typical immediate post-hemodialysis complication unless an underlying infection is present.
2. A healthcare professional is monitoring the respiratory status of a client who has just undergone surgery and is wearing a pulse oximeter. Which of the following coexisting problems is cause for the healthcare professional to suspect that the oxygen saturation readings are not entirely accurate?
- A. Infection
- B. Hypertension
- C. Low blood pressure
- D. Loss of cough reflex
Correct answer: C
Rationale: Low blood pressure (hypotension), shock, and the use of peripheral vasoconstricting medications can lead to inaccurate pulse oximetry readings due to impaired peripheral perfusion. Hypertension and infection are not typically associated with inaccurate pulse oximetry readings, while the loss of cough reflex does not directly affect oxygen saturation readings.
3. Which electrolyte imbalance is most likely to be seen in a patient with chronic kidney disease?
- A. Hypernatremia.
- B. Hyperkalemia.
- C. Hypocalcemia.
- D. Hypokalemia.
Correct answer: B
Rationale: In chronic kidney disease, hyperkalemia is the most common electrolyte imbalance due to the kidneys' reduced ability to excrete potassium. This impaired kidney function leads to potassium retention in the body, resulting in elevated serum potassium levels. Hypernatremia (increased sodium levels) is less likely in chronic kidney disease as the kidneys typically still function to regulate sodium levels. Hypocalcemia (low calcium levels) is not a prominent electrolyte imbalance in chronic kidney disease unless there are additional factors involved. Hypokalemia (low potassium levels) is less common in chronic kidney disease, as the primary issue is usually potassium retention rather than deficiency.
4. A client is being prepared for a colonoscopy. Into which position does the nurse assist the client for the procedure?
- A. Left Sims' position
- B. Lithotomy position
- C. Knee-chest position
- D. Right Sims' position
Correct answer: A
Rationale: During a colonoscopy, the client is positioned in the left Sims' position. This position is chosen as it optimally utilizes the client’s anatomy to facilitate the introduction of the colonoscope. The lithotomy position (Choice B) is commonly used for gynecological exams, not colonoscopies. The knee-chest position (Choice C) is typically employed for rectal examinations or certain surgical procedures, not colonoscopies. The right Sims' position (Choice D) is a less common position for colonoscopy compared to the left Sims' position.
5. A nurse performing nasopharyngeal suctioning suddenly notes the presence of bloody secretions. What should the nurse do first?
- A. Continue suctioning to remove the blood
- B. Check the degree of suction being applied
- C. Encourage the client to cough out the bloody secretions
- D. Remove the suction catheter from the client’s nose and begin vigorous suctioning through the mouth
Correct answer: B
Rationale: The correct answer is to check the degree of suction being applied (Choice B). When bloody secretions are encountered during nasopharyngeal suctioning, it is crucial to assess the situation promptly. Checking the degree of suction being applied is the first step as excessive suction pressure may be causing trauma and bleeding. Adjusting the suction pressure may be necessary to prevent further harm. Continuing suctioning to remove the blood (Choice A) or performing vigorous suctioning through the mouth (Choice D) can lead to increased trauma and worsen bleeding. Encouraging the client to cough out the bloody secretions (Choice C) is not appropriate since the client undergoing suctioning is typically unable to expectorate secretions. Therefore, the priority is to check and adjust the suction settings to ensure safe and effective suctioning.
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