HESI LPN
HESI Fundamentals Exam
1. A healthcare professional is obtaining the blood pressure in a client's lower extremity. Which of the following actions should the healthcare professional take?
- A. Place the bladder of the cuff over the posterior aspect of the thigh
- B. Use a smaller cuff designed for lower extremities
- C. Place the cuff around the client's ankle
- D. Ensure the cuff is positioned above the knee
Correct answer: A
Rationale: When measuring blood pressure in the lower extremity, the bladder of the cuff should be placed over the posterior aspect of the thigh. This positioning ensures an accurate measurement. Placing the cuff around the ankle (Choice C) or above the knee (Choice D) would not provide an accurate blood pressure reading in the lower extremity. Using a smaller cuff designed for lower extremities (Choice B) is not appropriate as the standard cuff size should be used with the bladder placed over the posterior aspect of the thigh.
2. A client has a new prescription for a metered-dose inhaler. Which of the following instructions should the nurse include?
- A. Inhale quickly and deeply while pressing down on the inhaler.
- B. Hold your breath for 10 seconds after inhaling the medication.
- C. Exhale immediately after inhaling the medication.
- D. Shake the inhaler before each use.
Correct answer: B
Rationale: The correct instruction for using a metered-dose inhaler is to hold your breath for 10 seconds after inhaling the medication. This allows the medication to be absorbed more effectively in the lungs. Inhaling quickly and deeply while pressing down on the inhaler (Choice A) may cause the medication to deposit in the mouth and throat rather than reaching the lungs. Exhaling immediately after inhaling the medication (Choice C) may also lead to medication wastage. Shaking the inhaler before each use (Choice D) is not necessary for all types of inhalers and can sometimes cause improper drug delivery.
3. When should the nurse plan to collect a sputum specimen for culture and sensitivity as ordered by a client's provider?
- A. In the morning upon rising.
- B. Immediately after the client eats breakfast.
- C. Before the client goes to bed.
- D. After the client has had a drink of water.
Correct answer: A
Rationale: The correct time to collect a sputum specimen for culture and sensitivity is in the morning upon rising. This timing ensures the most concentrated sample as sputum produced overnight tends to accumulate and sit in the airways, providing a quality sample for testing. Collecting the specimen immediately after eating breakfast (choice B) may introduce food particles that could contaminate the sample. Collecting it before bed (choice C) may lead to a diluted sample due to daily activities. Collecting the specimen after having a drink of water (choice D) can also result in a diluted sample, impacting the accuracy of the test results.
4. A healthcare professional is planning weight loss strategies for a group of clients who are obese. Which of the following actions by the professional will improve the clients' commitment to a long-term goal of weight loss?
- A. Help the clients increase their self-motivation
- B. Recommend gradual dietary changes tailored to the clients' preferences
- C. Emphasize the importance of both exercise and dietary changes
- D. Encourage setting both short-term and long-term goals
Correct answer: A
Rationale: Helping the clients increase their self-motivation is crucial for long-term weight loss success. By empowering clients to find their internal drive to make healthy choices, they are more likely to stay committed to their goals. Choice B is incorrect because recommending a strict diet plan immediately may not consider the clients' individual preferences and needs, leading to potential disengagement. Choice C is incorrect as focusing solely on exercise without addressing dietary changes does not provide a comprehensive approach to weight loss. Choice D is incorrect because setting only short-term goals may not foster sustained progress towards achieving a healthier weight.
5. A client is being treated for diabetic ketoacidosis (DKA). Which laboratory value would be most concerning?
- A. Blood glucose of 350 mg/dL
- B. Serum bicarbonate of 18 mEq/L
- C. Arterial pH of 7.20
- D. Serum potassium of 5.5 mEq/L
Correct answer: C
Rationale: In a client with diabetic ketoacidosis (DKA), the most concerning laboratory value is an arterial pH of 7.20. An arterial pH of 7.20 indicates severe acidosis, which is a critical condition requiring immediate intervention. This pH level reflects a significant imbalance in the body's acid-base status, potentially leading to serious complications. High blood glucose levels (choice A) are expected in DKA but do not directly indicate the severity of acidosis. A serum bicarbonate level of 18 mEq/L (choice B) is low but not as immediately critical as a pH of 7.20. Serum potassium of 5.5 mEq/L (choice D) is elevated, which can occur in DKA due to insulin deficiency, but it is not the most concerning value in this scenario.
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