HESI LPN
CAT Exam Practice
1. A 41-week gestation primigravida woman is admitted to labor and delivery for induction of labor. What finding should the nurse report to the healthcare provider before initiating the infusion of oxytocin?
- A. Fetal heart tones located in the upper right quadrant
- B. Biophysical profile results showing oligohydramnios
- C. Regular contractions occurring every 10 minutes
- D. Sterile vaginal exam revealing 3 cm dilation
Correct answer: B
Rationale: Oligohydramnios (low amniotic fluid) is a significant concern before starting oxytocin and should be reported to ensure safe labor induction. This finding can indicate potential fetal compromise and requires immediate evaluation. Fetal heart tones located in a specific quadrant, regular contractions, and cervical dilation are common assessments during labor but are not as critical as oligohydramnios in this scenario.
2. At 1130, the nurse assumes care of an adult client with diabetes mellitus who was admitted with an infected foot ulcer. After reviewing the client’s electronic health record, which priority nursing action should the nurse implement?
- A. Administer insulin based on the sliding scale
- B. Assess the appearance of the foot wound
- C. Obtain antibiotic peak and trough levels
- D. Initiate hourly measurements of urine output
Correct answer: B
Rationale: Assessing the appearance of the foot wound is the priority action in this scenario. This assessment is crucial to monitor for any signs of infection progression or complications related to the foot ulcer, especially in a client with diabetes mellitus. Administering insulin based on the sliding scale (Choice A) is important but not the immediate priority compared to assessing the foot wound. Obtaining antibiotic peak and trough levels (Choice C) is relevant but not as immediate as assessing the wound for signs of infection. Initiating hourly measurements of urine output (Choice D) is not the priority when compared to assessing the foot wound in a client with an infected foot ulcer.
3. Identify the placement of the stapes footplate into the bony labyrinth.
- A. Fenestra vestibuli
- B. Fenestra cochleae
- C. Tympanic membrane
- D. Round window
Correct answer: A
Rationale: The correct answer is A: Fenestra vestibuli. The stapes footplate is placed into the fenestra vestibuli of the bony labyrinth. This structure is also known as the oval window and is located at the junction of the middle ear and inner ear. Choice B, Fenestra cochleae, is incorrect as this opening is also known as the round window and is located near the base of the cochlea. Choice C, Tympanic membrane, is incorrect as it is also known as the eardrum and separates the external ear from the middle ear. Choice D, Round window, is incorrect as it is the opening covered by the secondary tympanic membrane and is important for the dissipation of sound waves in the cochlea.
4. A client who will be going to surgery states no known allergies to any medications. What is the most important nursing action for the nurse to implement next?
- A. Assess client’s knowledge of an allergic response
- B. Record 'no known drug allergies' on the preoperative checklist
- C. Flag 'no known drug allergies' on the front of the chart
- D. Assess client’s allergies to non-drug substances
Correct answer: B
Rationale: The most important action to take in this situation is to record 'no known drug allergies' on the preoperative checklist. This ensures that all healthcare staff involved in the surgery are aware of the client's stated lack of drug allergies, helping to prevent any potential adverse reactions. Assessing the client's knowledge of an allergic response (Choice A) may be valuable but is not the most crucial action at this point. Flagging 'no known drug allergies' on the front of the chart (Choice C) is less practical and visible compared to documenting it on the preoperative checklist. Assessing the client’s allergies to non-drug substances (Choice D) is not the priority in this scenario where the focus is on medications due to the upcoming surgery.
5. 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.
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