A client weighing 198 lbs is prescribed Dopamine hydrochloride IV at 2 mcg/kg/minute to promote renal perfusion.
The pharmacy provides a pre-mixed bag of dopamine containing 400 mg in 250 mL dextrose 5% in water (D5W). An IV pump that provides a precision infusion rate to a tenth of a mL is available.
How many mL/hour should the IV pump be set to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["6.8"]
Step 1: Convert the client’s weight from lbs to kg. 1 kg is approximately 2.2 lbs. So, 198 lbs ÷
2.2 = 90 kg (rounded to the nearest whole number).
Step 2: Calculate the total mcg of Dopamine needed per minute. The prescription is for 2 mcg/kg/minute. So, 90 kg × 2 mcg/kg/minute = 180 mcg/minute.
Step 3: Convert the total mcg of Dopamine in the bag to mcg/mL. The bag contains 400 mg of Dopamine in 250 mL. 1 mg is equal to 1000 mcg. So, 400 mg × 1000 = 400,000 mcg. Therefore, the concentration is 400,000 mcg ÷ 250 mL = 1600 mcg/mL.
Step 4: Calculate the mL of Dopamine needed per minute. So, 180 mcg/minute ÷ 1600 mcg/mL
= 0.1125 mL/minute.
Step 5: Convert mL/minute to mL/hour. There are 60 minutes in an hour. So, 0.1125 mL/minute × 60 = 6.75 mL/hour. The IV pump should be set to deliver 6.8 mL/hour (rounded to the nearest tenth).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
The most crucial intervention for a nurse to include in the care plan of a client with a deep vein thrombosis (DVT) in the left leg who is on a heparin protocol is to monitor for bleeding side effects related to heparin therapy. Heparin is an anticoagulant medication that prevents the formation of blood clots. While it is an effective treatment for DVT, it can also increase the risk of bleeding. Therefore, it is essential for the nurse to closely monitor the client for any signs of bleeding, such as unusual bruising, blood in urine or stool, or bleeding gums.
Choice B rationale
While promoting movement can help prevent a pulmonary embolism (a potential complication of DVT), it is not the most crucial intervention when a client is on a heparin protocol. Excessive movement can potentially dislodge the clot, leading to a pulmonary embolism. Therefore, while movement is important, it should be done under the guidance of a healthcare professional.
Choice C rationale
Checking blood pressure and heart rate at least every 4 hours is a standard nursing intervention for many clients, not just those with DVT. While it is important to monitor these vital signs, it is not the most crucial intervention for a client with DVT on a heparin protocol.
Choice D rationale
Measuring the circumference of each calf can help assess for leg edema, which can be a sign of DVT. However, this is not the most crucial intervention for a client on a heparin protocol. The priority is to monitor for bleeding side effects related to the heparin therapy.
Correct Answer is D
Explanation
Choice A rationale
While it’s true that phantom limb pain can be a normal post-surgical sensation, simply reassuring the patient doesn’t address the pain they’re experiencing.
Choice B rationale
Guiding in moving the unaffected limb to override the sensation being experienced is not a recommended intervention for phantom limb pain. Phantom limb pain is a complex phenomenon that is not simply overridden by movement of other body parts.
Choice C rationale
Explaining that the sensations of tingling and pain are not real may invalidate the patient’s experience. Phantom limb pain is a real phenomenon experienced by many amputees. It’s not just a sensation; it’s a type of neuropathic pain that can be severe and debilitating.
Choice D rationale
Affirming that a prosthetic with physical therapy will gradually improve the symptoms is the best non-pharmacological intervention among the choices. Physical therapy, including mirror therapy and other desensitization techniques, can help manage phantom limb pain. The use of a prosthetic can help the patient regain function and mobility, which can also improve their overall well-being and potentially reduce the perception of phantom limb pain.
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