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Zorluk: KolayPharmacological and Parenteral Therapies

A healthcare provider prescribes 1,000 mL of lactated Ringer's solution to infuse intravenously over 8 hours. The manual intravenous (IV) administration set delivers 15 drops per milliliter (gtt/mL). Which of the following represents the correct drip rate for this infusion? (Round the final answer to the nearest whole number).

  1. 31 gtt/minCevap
  2. B
    125 gtt/min
  3. C
    21 gtt/min
  4. D
    42 gtt/min

Cevap

31 gtt/min
To calculate the correct manual IV drip rate, use the formula: Volume×Drop FactorTime in minutes\frac{\text{Volume} \times \text{Drop Factor}}{\text{Time in minutes}}. First, convert the 8-hour infusion time to 480 minutes. Next, calculate: 1000 mL×15 gtt/mL480 minutes=31.25\frac{1000 \text{ mL} \times 15 \text{ gtt/mL}}{480 \text{ minutes}} = 31.25. Because partial drops cannot be administered manually, round 31.2531.25 to the nearest whole number, resulting in 3131 gtt/min.

Adım Adım Çözüm

1
Determine the total volume to be infused and convert the prescribed infusion time from hours into minutes.
Total Volume = 1,0001,000 mL. Total Time = 8×60=4808 \times 60 = 480 minutes.
The standard IV manual drip rate formula requires the time variable to be expressed in minutes.
2
Apply the standard IV drip rate formula: Total Volume (mL)×Drop Factor (gtt/mL)Total Time (minutes)\frac{\text{Total Volume (mL)} \times \text{Drop Factor (gtt/mL)}}{\text{Total Time (minutes)}}.
1000×15480\frac{1000 \times 15}{480}
This formula calculates the exact number of drops that must fall per minute to deliver the total fluid volume over the prescribed duration.
3
Perform the calculation and round the result to the nearest whole number.
15000480=31.25\frac{15000}{480} = 31.25. Rounded to the nearest whole number is 3131 gtt/min.
Manual IV drip rates can only be administered as whole drops.

Anahtar Kavram

Intravenous (IV) manual flow rate calculation
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Konular

Pharmacological and Parenteral Therapies

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