Nokea
A nurse is teaching a newly licensed nurse about contraindications to ceftriaxone. The nurse should include a severe allergy to which of the following medications as a contraindication to ceftriaxone?
- A. Gentamicin
- B. Clindamycin
- C. Piperacillin
- D. Sulfamethoxazole-trimethoprim
Correct Answer: C
Rationale: Ceftriaxone is a cephalosporin, and individuals with a penicillin allergy (such as Piperacillin) may have cross-sensitivity, making it contraindicated. Gentamicin (Choice A) belongs to the aminoglycoside class, not related to cephalosporins. Clindamycin (Choice B) is a lincosamide antibiotic and is not typically associated with cross-allergies to cephalosporins. Sulfamethoxazole-trimethoprim (Choice D) is a sulfonamide antibiotic, also not directly related to ceftriaxone.
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A nurse is preparing to administer an enteral tube feeding through an NG tube at 250 mL over 4 hr. The nurse should set the pump to deliver how many mL/hr?
- A. 60 mL/hr
- B. 62 mL/hr
- C. 63 mL/hr
- D. 65 mL/hr
Correct Answer: C
Rationale: Calculation: 250 mL / 4 hours = 62.5 mL/hr, which should be rounded up to 63 mL/hr. This ensures the correct rate is set for continuous feeding. Choice A (60 mL/hr) is incorrect as it does not reflect the accurate calculation. Choice B (62 mL/hr) is close but does not round up to the nearest whole number as required. Choice D (65 mL/hr) is higher than the correct calculation and would deliver the feeding solution at a faster rate than prescribed.
A client at 28 weeks of gestation is experiencing preterm labor. Which of the following medications should the nurse plan to administer?
- A. Oxytocin
- B. Nifedipine
- C. Dinoprostone
- D. Misoprostol
Correct Answer: B
Rationale: Nifedipine is the correct choice in this scenario. It is a calcium channel blocker that helps suppress uterine contractions and halt preterm labor. Nifedipine is commonly used to manage preterm labor in pregnant women by relaxing the smooth muscle of the uterus. Oxytocin (Choice A) is used to induce or augment labor, not to inhibit contractions. Dinoprostone (Choice C) and Misoprostol (Choice D) are prostaglandins used for cervical ripening and induction of labor, not for stopping preterm labor.
A nurse is planning to administer chlorothiazide 20 mg/kg/day PO divided equally and administered twice daily for a toddler who weighs 28.6 lb. How many mL should the nurse administer per dose? (Round to the nearest tenth)
- A. 2.6 mL
- B. 2.2 mL
- C. 3.5 mL
- D. 5.0 mL
Correct Answer: A
Rationale: The correct calculation is as follows: The toddler's weight in kg is 13 kg (28.6 lb / 2.2 lb/kg). The total daily dose is 260 mg (20 mg x 13 kg). Therefore, the dose per administration is 130 mg (260 mg / 2). Given the concentration of 250 mg/5 mL, the dose in mL is 2.6 mL (130 mg / (250 mg/5 mL)). Therefore, the nurse should administer 2.6 mL per dose. Choice B, 2.2 mL, is incorrect as it does not reflect the correct calculation. Choices C and D, 3.5 mL and 5.0 mL, are also incorrect and do not align with the accurate dosage calculation based on the given scenario.
A nurse is reviewing the laboratory results for a client who has a prescription for filgrastim. The nurse should recognize that an increase in which of the following values indicates a therapeutic effect of this medication?
- A. Erythrocyte count
- B. Neutrophil count
- C. Lymphocyte count
- D. Thrombocyte count
Correct Answer: B
Rationale: Filgrastim is used to increase neutrophil production in clients undergoing chemotherapy or with bone marrow suppression. A rise in neutrophil count indicates the medication is working effectively to boost immune response. Choices A, C, and D are incorrect as filgrastim primarily targets neutrophils, not erythrocytes, lymphocytes, or thrombocytes.
A nurse is preparing to administer prochlorperazine 2.5 mg IV. Available is prochlorperazine injection 5 mg/mL. How many mL should the nurse administer?
- A. 0.2 mL
- B. 0.5 mL
- C. 1.0 mL
- D. 1.5 mL
Correct Answer: B
Rationale: To determine the volume of prochlorperazine to administer, divide the prescribed dose (2.5 mg) by the concentration of the medication (5 mg/mL). This calculation results in 0.5 mL. Therefore, the nurse should administer 0.5 mL to deliver the correct dose. Choice A (0.2 mL) is incorrect as it miscalculates the dosage. Choices C (1.0 mL) and D (1.5 mL) are also incorrect as they do not accurately reflect the calculated volume needed for the dose.