Question

3. You need to administer a Normal Saline (NS) bolus to your patient who is dehydrated. The doctor has ordered NS at 20 mL/kg/dose. The doctor requests that you infuse the fluids over 30 minutes.

Patient weight: 18.2 kg
Available NS bag: 1,000 mL
How many mLs will you administer?
What is your infusion rate?
4. You are caring for a hypotensive patient who weighs 175 lb.
Medication order: Dopamine drip at 3 mcg/kg/min
Available: Dopamine 800 mg/500 mL
How many mL per hour will the patient receive?

Answer 1

3. To calculate the amount of NS to be administered, we need to first determine the total dose required based on the patient's weight:

18.2 kg x 20 ml/kg = 364 ml

Therefore, we need to administer 364 ml of NS.

To determine the infusion rate, we need to divide the total dose by the time of infusion:

364 ml / 30 min = 12.13 ml/min

So, the infusion rate is 12.13 ml/min.

4. Firstly, we need to convert the patient's weight from pounds to kilograms:

175 lb / 2.2 = 79.5 kg

The patient requires dopamine at a rate of 3 mcg/kg/min, so we need to calculate the total dose required based on the patient's weight:

79.5 kg x 3 mcg/kg/min = 238.5 mcg/min

To convert mcg to mg, we need to divide by 1000:

238.5 mcg/min / 1000 = 0.2385 mg/min

We know the concentration of the dopamine drip is 800 mg/500 ml, so we can use this information to calculate the infusion rate:

500 ml x 0.2385 mg/min / 800 mg = 0.148 ml/min

Therefore, the patient will receive 0.148 ml of dopamine per minute, or 8.88 ml per hour.

Step-by-step explanation: