HESI RN
HESI Fundamentals Practice Test
1. The healthcare provider plans to administer diazepam, 4 mg IV push, to a client with severe anxiety. How many milliliters should the healthcare provider administer? (Round to the nearest tenth.)
- A. 0.2 mL
- B. 0.8 mL
- C. 1.25 mL
- D. 2.0 mL
Correct answer: B
Rationale: To calculate the volume to administer, use the formula (1 mL × 4 mg) / 5 mg = 0.8 mL. The healthcare provider should administer 0.8 mL of diazepam for a dosage of 4 mg IV push. Choice A is incorrect because it results from an incorrect calculation. Choices C and D are incorrect as they do not align with the correct calculation based on the provided dosage.
2. A client is admitted with a diagnosis of fluid volume deficit. Which clinical finding would the nurse expect?
- A. Bounding pulse
- B. Bradycardia
- C. Oliguria
- D. Dry mucous membranes
Correct answer: D
Rationale: Dry mucous membranes (D) are a common clinical finding indicating fluid volume deficit. In dehydration, there is insufficient fluid in the body, leading to dry mucous membranes due to decreased saliva production. Bounding pulse (A) is associated with fluid volume excess, not deficit. Bradycardia (B) and oliguria (C) are not typical clinical findings of fluid volume deficit but may be seen in fluid volume excess or other conditions.
3. When taking a client's blood pressure, the healthcare professional is unable to distinguish the point at which the first sound was heard. What is the best action for the healthcare professional to take?
- A. Deflate the cuff completely and immediately reattempt the reading.
- B. Reinflate the cuff completely and leave it inflated for 90 to 110 seconds before taking the second reading.
- C. Deflate the cuff to zero and wait 30 to 60 seconds before reattempting the reading.
- D. Document the exact level visualized on the sphygmomanometer where the first fluctuation was seen.
Correct answer: C
Rationale: The correct action when unable to distinguish the point of the first sound during blood pressure measurement is to deflate the cuff to zero and wait 30 to 60 seconds before reattempting the reading. This allows blood flow to return to the extremity, ensuring a more accurate reading the second time. It is important to ensure that the cuff is fully deflated and the appropriate wait time is given to obtain an accurate blood pressure measurement.
4. When a client has suffered severe burns all over his body, the most effective method of monitoring the cardiovascular system is:
- A. Cuff blood pressure.
- B. Arterial pressure.
- C. Pulmonary artery pressure.
- D. Central venous pressure.
Correct answer: D
Rationale: Central venous pressure (CVP) monitoring is the most effective method to assess fluid status and the cardiovascular system in a client with severe burns. Severe burns can lead to significant fluid shifts and hemodynamic changes, making central venous pressure monitoring crucial for guiding fluid resuscitation and managing cardiovascular stability in these patients.
5. When assessing a client with wrist restraints, the nurse observes that the fingers on the right hand are blue. What action should the nurse implement first?
- A. Loosen the right wrist restraint.
- B. Apply a pulse oximeter to the right hand.
- C. Compare hand color bilaterally.
- D. Palpate the right radial pulse.
Correct answer: A
Rationale: The priority nursing action is to restore circulation by loosening the restraint (A) because blue fingers (cyanosis) indicate decreased circulation. Comparing hand color bilaterally (C) and palpating the right radial pulse (D) are important assessments to gather more information, but they do not have the priority of addressing the decreased circulation by loosening the restraint. Applying a pulse oximeter (B) is not indicated in this scenario as it measures the saturation of hemoglobin with oxygen, which is not relevant when cyanosis is related to mechanical compression from the restraints.
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