HESI LPN
HESI Fundamentals Study Guide
1. When teaching the guardian of a 12-year-old male client about manifestations of puberty, which of the following physical changes typically occurs first?
- A. Appearance of downy hair on the upper lip
- B. Hair growth in the axillae
- C. Enlargement of the testes and scrotum
- D. Deepening of the voice
Correct answer: C
Rationale: During puberty in males, the first physical change that typically occurs is the enlargement of the testes and scrotum. This change is due to increased production of testosterone, which stimulates growth and development of the genital organs. The appearance of downy hair on the upper lip (Choice A) and hair growth in the axillae (Choice B) usually follow the enlargement of the testes and scrotum. Deepening of the voice (Choice D) is a later stage change that occurs during puberty as the larynx (voice box) grows and the vocal cords lengthen and thicken.
2. A client has just returned from surgery with an indwelling urinary catheter in place. What is the most important action for the nurse to take to prevent infection?
- A. Change the catheter every 72 hours.
- B. Ensure the catheter tubing is free of kinks.
- C. Clean the perineal area with antiseptic solution daily.
- D. Irrigate the catheter with normal saline every shift.
Correct answer: B
Rationale: The most crucial action to prevent infection in a client with an indwelling urinary catheter is to ensure the catheter tubing is free of kinks. Kinks in the tubing can lead to urine retention or obstruction, increasing the risk of infection. Changing the catheter every 72 hours is not necessary if there are no signs of infection or other issues. Cleaning the perineal area with antiseptic solution daily is important for hygiene but not the most critical action to prevent infection related to the catheter. Irrigating the catheter with normal saline every shift is not a routine practice and may increase the risk of introducing pathogens into the urinary system.
3. While measuring a client’s oral temperature using an electronic thermometer, what action should the nurse take?
- A. Assist the client with oral hygiene before taking the temperature.
- B. Inquire whether the client has smoked in the last 30 minutes.
- C. Connect the red tip probe to the thermometer unit.
- D. Position the probe tip against the client’s buccal mucosa.
Correct answer: B
Rationale: The correct action for the nurse to take when measuring a client’s oral temperature using an electronic thermometer is to inquire whether the client has smoked in the last 30 minutes. Smoking can affect the accuracy of oral temperature readings. Providing oral hygiene (Choice A) is not directly related to ensuring accurate temperature measurement. Connecting the red tip probe (Choice C) is not specific to oral temperature measurement accuracy. Positioning the probe tip against the buccal mucosa (Choice D) is incorrect as oral temperature is typically measured under the tongue, not against the cheek.
4. In a mass casualty scenario at a child day care center, which child would the triage nurse prioritize for treatment last?
- A. An infant with intermittent bulging anterior fontanel between crying episodes
- B. A toddler with severe deep abrasions covering over 98% of the body
- C. A preschooler with 1 lower leg fracture and the other leg with an upper leg fracture
- D. A school-age child with singed eyebrows and hair on the arms
Correct answer: B
Rationale: In a mass casualty scenario, the triage nurse would prioritize the toddler with severe deep abrasions covering over 98% of the body for treatment last. This child is categorized as 'expectant' due to the extensive injuries, which are unlikely to be survivable even with immediate treatment. The other choices describe injuries that are serious but have a higher likelihood of survival with appropriate and timely intervention. The infant with an intermittent bulging anterior fontanel may have increased intracranial pressure requiring urgent evaluation, the preschooler with leg fractures can be stabilized and treated effectively, and the school-age child with singed hair likely has superficial burns which can be managed promptly.
5. The healthcare professional is caring for a client with a chest tube. What is the most important action for the healthcare professional to take to ensure the chest tube is functioning properly?
- A. Milk the chest tube to ensure patency.
- B. Clamp the chest tube when moving the client.
- C. Ensure the water seal chamber is filled to the appropriate level.
- D. Secure the chest tube to the client's bed.
Correct answer: C
Rationale: Ensuring the water seal chamber is filled to the appropriate level is crucial to maintain the effectiveness of the chest tube drainage system. This step helps prevent air from entering the pleural space, ensuring proper lung re-expansion. 'Milking' the chest tube is not recommended as it can cause damage to the chest tube and surrounding tissues. Clamping the chest tube is not advisable as it can lead to tension pneumothorax. Securing the chest tube to the bed is important for stability but does not directly impact the functioning of the chest tube.
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