HESI LPN
HESI Focus on Maternity Exam
1. Dizygotic (DZ) twins share _________ percent of their genes.
- A. 100
- B. 75
- C. 50
- D. 25
Correct answer: C
Rationale: Dizygotic (DZ) twins share approximately 50% of their genes. This is because dizygotic twins, also known as fraternal twins, originate from two separate fertilized eggs and share similar genetic similarity to regular siblings. Choice A (100%) is incorrect because if twins shared 100% of their genes, they would be identical twins (monozygotic). Choice B (75%) is incorrect as it is not the typical genetic similarity seen in dizygotic twins. Choice D (25%) is incorrect as it represents a significantly lower genetic similarity than what is observed in dizygotic twins.
2. What assessment is the priority focus for a client with major depression?
- A. Mood and affect.
- B. Suicidal ideation.
- C. Nutritional status.
- D. Fluid and electrolyte balance.
Correct answer: B
Rationale: The correct answer is B: Suicidal ideation. When dealing with a client diagnosed with major depression, assessing for suicidal ideation is of utmost importance. Individuals with major depression have an increased risk of suicide; hence, evaluating their risk for self-harm is crucial. Mood and affect, while important, come secondary to ensuring the safety of the client. Nutritional status and fluid and electrolyte balance are essential components of care but are not the priority when dealing with a client with major depression.
3. A 70-year-old client is admitted to the hospital after 24 hours of acute diarrhea. To determine fluid status, which initial data is most important for the nurse to obtain?
- A. Usual and current weight
- B. Color and amount of urine
- C. Number and frequency of stools
- D. Intake and output 24 hours prior to admission
Correct answer: A
Rationale: The correct answer is A: Usual and current weight. Weight changes are the most direct indicator of fluid status in a patient with acute diarrhea. Monitoring weight loss or gain can provide crucial information about fluid balance. Option B, color and amount of urine, though important for assessing renal function, is not as direct an indicator of fluid status as weight. Option C, number and frequency of stools, is relevant for assessing the severity of diarrhea but does not provide direct information on fluid status. Option D, intake and output 24 hours prior to admission, does not reflect the current fluid status and may not be accurate in a rapidly changing condition like acute diarrhea.
4. To evaluate a client's understanding of self-administering insulin within the psychomotor domain of learning, what action should the instructor take?
- A. Have the client demonstrate the procedure.
- B. Explain the procedure again.
- C. Ask the client to describe the procedure.
- D. Observe the client watching a video on the procedure.
Correct answer: A
Rationale: Having the client demonstrate the procedure is the most appropriate action to evaluate understanding within the psychomotor domain of learning. This allows the instructor to assess the client's ability to perform the skill, which is a key aspect of this domain. Choice B, explaining the procedure again, focuses on the cognitive domain rather than the psychomotor domain. Choice C, asking the client to describe the procedure, pertains more to the verbal or cognitive domain of learning. Choice D, observing the client watching a video on the procedure, does not directly assess the client's ability to perform the skill in the psychomotor domain.
5. Which of the following techniques represents the most appropriate method of opening the airway of an infant with no suspected neck injury?
- A. lift up the chin and hyperextend the neck
- B. tilt the head back without hyperextending the neck
- C. gently lift the chin while maintaining slight flexion of the neck
- D. perform the technique as you would for an older child or adult
Correct answer: B
Rationale: The correct technique for opening the airway of an infant with no suspected neck injury is to tilt the head back without hyperextending the neck. This method helps to keep the airway open without risking injury to the infant's delicate neck structures. Choice A, lifting up the chin and hyperextending the neck, can potentially harm the infant's neck. Choice C, gently lifting the chin while maintaining slight flexion of the neck, is not as effective as tilting the head back. Choice D is incorrect as infants require a different approach compared to older children or adults due to their anatomical differences.