A nurse is preparing to administer dopamine hydrochloride 4 mcg/kg/min via continuous infusion.
Available is dopamine hydrochloride in a solution of 800 mg in a 250 mL bag.
The client weighs 80 kg. The nurse should set the IV infusion to deliver how many mL/hr? (Round the answer to the nearest whole number.
Use a leading zero if it applies.)
4 mL/hr.
5 mL/hr.
6 mL/hr.
7 mL/hr.
The Correct Answer is C
Step 1: Convert the dopamine hydrochloride dose from mcg to mg. We know that 1 mg = 1000 mcg. So, 4 mcg = 0.004 mg.
Step 2: Calculate the total amount of dopamine hydrochloride the client needs per minute. We know that the client weighs 80 kg and the dose is 0.004 mg/kg/min. So, 0.004 mg/kg/min × 80 kg = 0.32 mg/min.
Step 3: Convert the total amount of dopamine hydrochloride the client needs per minute to an hourly rate. We know that 1 hour = 60 minutes. So, 0.32 mg/min × 60 min/hr = 19.2 mg/hr.
Step 4: Calculate the volume of the solution that contains 19.2 mg of dopamine hydrochloride. We know that the solution contains 800 mg in 250 mL. So, (19.2 mg ÷ 800 mg) × 250 mL = 6 mL.
Therefore, the nurse should set the IV infusion to deliver 6 mL/hr (rounded to the nearest whole number).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Question 1: The correct answer is Choice A - Stabilize the tube by taping it to the infant’s cheek.
Choice A Rationale: Stabilizing the nasogastric tube by taping it to the infant's cheek is crucial to prevent displacement, which could lead to complications such as misplacement into the respiratory tract or discomfort for the infant. Proper securing ensures the tube remains in the intended position, facilitating the safe and effective delivery of nutrients. This action aligns with standard nursing practices to promote patient safety and comfort during enteral feedings.
Choice B Rationale: Option B suggests positioning the infant in a supine position during feedings, which is incorrect. Placing the infant in a supine position increases the risk of aspiration due to the potential for reflux. Instead, the infant should be positioned upright or semi-upright with the head elevated to minimize the risk of regurgitation and aspiration.
Choice C Rationale: Aspiration of residual fluid from the infant's stomach and discarding it (Option C) is not recommended practice. Aspirated gastric contents should be measured and assessed for volume and color to evaluate gastrointestinal function and potential complications. Discarding the aspirate without evaluation could lead to the oversight of important clinical indicators or abnormalities in the infant's condition.
Choice D Rationale: Microwaving the infant's formula to a temperature of 41°C (105.8°F) (Option D) is an incorrect practice. Heating formula in a microwave can result in uneven temperature distribution, creating hot spots that may cause burns to the infant's delicate oral mucosa or esophagus. The preferred method for warming formula is to use a water bath or bottle warmer to achieve a consistent temperature close to body temperature (around 37°C or 98.6°F).
Correct Answer is ["A","C","D","E","F","G"]
Explanation
The correct answers are Choices A, C, D, E, F, and G.
Choice A rationale: Antihypertensive medication is indicated due to sustained elevated BP (≥160/110 mm Hg), which increases risk for stroke, placental abruption, and eclampsia. Prompt control reduces maternal and fetal morbidity.
Choice B rationale: Routine vaginal exams are contraindicated unless signs of labor are present. Frequent exams increase infection risk and are not part of standard care for hypertensive or preeclamptic clients.
Choice C rationale: A low-stimulation environment (dim lights, quiet room) reduces CNS irritability and seizure risk in preeclampsia. It supports neuroprotection and aligns with seizure precaution protocols.
Choice D rationale: Betamethasone promotes fetal lung maturity in preterm gestation when delivery is likely. It reduces neonatal respiratory distress syndrome and improves outcomes in hypertensive pregnancies.
Choice E rationale: A 24-hour urine specimen quantifies proteinuria, essential for diagnosing preeclampsia severity. Protein 3+ on dipstick warrants confirmation via timed collection for accurate staging.
Choice F rationale: Hourly intake and output monitoring detects fluid shifts, renal compromise, and early signs of pulmonary edema. It’s critical in hypertensive disorders to guide fluid management.
Choice G rationale: Bed rest minimizes physical stress, stabilizes BP, and reduces risk of placental disruption. Left lateral positioning enhances uteroplacental perfusion and supports fetal oxygenation.
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