Questions: Order: 1000 mL NS (0.9% Normal Saline) to infuse in 8 hours. Drop factor = 15 gtt / mL. Calculate gtt / min.

Order: 1000 mL NS (0.9% Normal Saline) to infuse in 8 hours. Drop factor = 15 gtt / mL. Calculate gtt / min.
Transcript text: 18 Order: 1000 mL NS ( $0.9 \%$ Normal Saline) to infuse in 8 hours. Drop factor $=15 \mathrm{gtt} / \mathrm{mL}$. Calculate $\mathrm{gtt} / \mathrm{min}$. [i) (1 Pcint) Enter your answer
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Solution

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Solution Steps

To solve this problem, we need to calculate the drip rate in drops per minute (gtt/min). The formula to use is:

\[ \text{Drip Rate (gtt/min)} = \left( \frac{\text{Total Volume (mL)}}{\text{Total Time (min)}} \right) \times \text{Drop Factor (gtt/mL)} \]

  1. Convert the total infusion time from hours to minutes.
  2. Use the formula to calculate the drip rate.
Step 1: Convert Infusion Time to Minutes

The total infusion time is given in hours. To convert it to minutes, we use the conversion factor \(1 \text{ hour} = 60 \text{ minutes}\).

\[ \text{Total Time (min)} = 8 \text{ hours} \times 60 \text{ min/hour} = 480 \text{ min} \]

Step 2: Calculate the Drip Rate

The formula to calculate the drip rate in drops per minute (\(\text{gtt/min}\)) is:

\[ \text{Drip Rate (gtt/min)} = \left( \frac{\text{Total Volume (mL)}}{\text{Total Time (min)}} \right) \times \text{Drop Factor (gtt/mL)} \]

Substituting the given values:

\[ \text{Drip Rate (gtt/min)} = \left( \frac{1000 \text{ mL}}{480 \text{ min}} \right) \times 15 \text{ gtt/mL} \]

Step 3: Perform the Calculation

First, calculate the volume per minute:

\[ \frac{1000 \text{ mL}}{480 \text{ min}} \approx 2.0833 \text{ mL/min} \]

Next, multiply by the drop factor:

\[ 2.0833 \text{ mL/min} \times 15 \text{ gtt/mL} \approx 31.25 \text{ gtt/min} \]

Final Answer

\(\boxed{\frac{125}{4} \text{ gtt/min}}\)

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