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 B
Explanation
Choice A rationale
The absence of coarse crackles is not necessarily an indication that chest physiotherapy (CPT) has been effective for a client with chronic obstructive pulmonary disease (COPD). Coarse crackles are often heard in conditions where there is fluid in the airways, such as pneumonia or heart failure. While their absence might indicate that there is no fluid in the airways, it does not necessarily mean that secretions have been effectively mobilized.
Choice B rationale
An increase in breath sounds is a good indication that chest physiotherapy (CPT) has been effective for a client with COPD3. CPT is a group of therapies designed to improve respiratory efficiency, promote expansion of the lungs, strengthen respiratory muscles, and eliminate secretions from the respiratory system. When these secretions are effectively mobilized and removed, breath sounds can become clearer and more easily heard.
Choice C rationale
The absence of fine crackles is not necessarily an indication that CPT has been effective for a client with COPD. Fine crackles are often heard in conditions where there is fluid in the airways or alveoli, such as pneumonia or heart failure. While their absence might indicate that there is no fluid in the airways or alveoli, it does not necessarily mean that secretions have been effectively mobilized.
Choice D rationale
An increase in respiratory rate is not necessarily an indication that CPT has been effective for a client with COPD. In fact, an increased respiratory rate could indicate respiratory distress, which could suggest that the therapy has not been effective or that the client’s condition has worsened.
Correct Answer is ["A","B","C","F"]
Explanation
The correct answer is A. Ventilation, B. Neurological status, C. Exposure, F. Circulation.
Choice A: Ventilation Ventilation is a crucial part of the primary survey in trauma assessment. It involves assessing the patient’s respiratory rate and effort, use of accessory muscles, cyanosis, and chest wall movement. The normal respiratory rate for adults is between 12-20 breaths per minute.
Choice B: Neurological status Neurological status is another vital component of the primary survey. It often involves assessing the patient’s level of consciousness, often using tools like the Glasgow Coma Scale (GCS). The GCS score can range from 3 (completely unresponsive) to 15 (responsive).
Choice C: Exposure Exposure involves removing the patient’s clothing to check for any hidden injuries. It’s an essential step in trauma assessment, but there’s no “normal range” for this as it’s a process rather than a measurable variable.
Choice D: Current medications While knowing a patient’s current medications is important in managing their care, it’s not typically part of the primary survey in trauma assessment. This information is usually gathered during the secondary survey.
Choice E: Allergies Like current medications, information about allergies is also crucial in managing patient care, but it’s not part of the primary survey. This information is usually collected during the secondary survey.
Choice F: Circulation Circulation is a critical part of the primary survey. It involves checking the patient’s heart rate, blood pressure, capillary refill time, and looking for any signs of external bleeding. The normal resting heart rate can range between 60-99 beats per minute.
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