HESI LPN
CAT Exam Practice Test
1. Following a gunshot wound, an adult client has a hemoglobin level of 4 grams/dl (40 mmol/L SI). The nurse prepares to administer a unit of blood for an emergency transfusion. The client has AB negative blood type and the blood bank sends a unit of type A Rh negative, reporting that there is not type AB negative blood currently available. Which intervention should the nurse implement?
- A. Transfuse Type A negative blood until type AB negative is available.
- B. Recheck the client’s hemoglobin, blood type, and Rh factor.
- C. Administer normal saline solution until type AB negative is available.
- D. Obtain additional consent for the administration of type A negative blood.
Correct answer: A
Rationale: In emergency situations where AB negative blood is unavailable, type A negative blood can be transfused to a patient with AB negative blood type. Type A negative blood is compatible with AB negative blood, making it a suitable option until the correct blood type becomes available. Transfusion of Type A negative blood is crucial to address the severe anemia promptly. Rechecking the client’s hemoglobin, blood type, and Rh factor (Choice B) may delay necessary treatment. Administering normal saline solution (Choice C) is not a substitute for blood transfusion in cases of severe anemia. Obtaining additional consent for the administration of type A negative blood (Choice D) is unnecessary as the situation is emergent and the blood type is compatible.
2. 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.
3. Which client should the nurse assess frequently because of the risk for overflow incontinence?
- A. A client who is bedfast, with increased serum BUN and creatinine levels
- B. A client with hematuria and decreasing hemoglobin and hematocrit levels
- C. A client who has a history of frequent urinary tract infections
- D. A client who is confused and frequently forgets to go to the bathroom
Correct answer: A
Rationale: The correct answer is A. Bedfast clients with increased serum BUN and creatinine levels are at high risk for overflow incontinence. This occurs due to decreased bladder function and reduced ability to sense bladder fullness, leading to the bladder overfilling and leaking urine. Choice B describes symptoms related to possible urinary tract infections or renal issues, but these do not directly indicate overflow incontinence. Choice C, a history of frequent urinary tract infections, may suggest other urinary issues but not specifically overflow incontinence. Choice D, a confused client who forgets to go to the bathroom, is more indicative of functional incontinence rather than overflow incontinence.
4. A premature infant weighing 1,200 grams at birth receives a prescription for beractant (Survanta) 120 mg endotracheal now and q6 hr for 24 hr. The recommended dose for beractant is 100 mg/kg birth weight per dose. Single-use vials of Survanta are labeled 100 mg/4 ml. What action should the nurse take?
- A. Give 4.8 ml q6 hr
- B. Notify the healthcare provider that the dose is too high
- C. Notify the healthcare provider that the dose is too low
- D. Give 1.2 ml q6 hr
Correct answer: A
Rationale: The correct answer is to give 4.8 ml q6 hr. To calculate the dose, you divide the prescribed dose of 120 mg by the concentration of Survanta, which is 100 mg per 4 ml. This results in 4.8 ml per dose, as 120 mg ÷ 100 mg/4 ml = 4.8 ml. Option B suggesting to notify the healthcare provider that the dose is too high is incorrect because the calculated dose of 4.8 ml is based on the recommended dose of 100 mg/kg birth weight. Option C suggesting to notify the healthcare provider that the dose is too low is incorrect as the calculated dose is based on the correct dosage calculation. Option D suggesting to give 1.2 ml q6 hr is incorrect because it doesn't align with the correct calculation.
5. A 13-year-old girl, diagnosed with diabetes mellitus Type 1 at the age of 9, is admitted to the hospital in diabetic ketoacidosis. Which occurrence is the most likely cause of the ketoacidosis?
- A. Ate an extra peanut butter sandwich before gym class
- B. Incorrectly drew up and administered too much insulin
- C. Was not hungry, so she skipped eating lunch
- D. Has had a cold and ear infection for the past two days
Correct answer: B
Rationale: The correct answer is B. Incorrect insulin administration is a common cause of diabetic ketoacidosis. Administering too much insulin can lead to uncontrolled hyperglycemia, where the body starts breaking down fat for energy, resulting in the production of ketones. Choices A, C, and D are less likely to directly cause diabetic ketoacidosis. Eating an extra peanut butter sandwich, skipping lunch, or having a cold and ear infection would not directly lead to the metabolic derangements seen in diabetic ketoacidosis.
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