Final answer:
The flow rate for the intravenous fluid ordered by the doctor, using tubing that delivers 20 drops per cc, is approximately 42 drops per minute.
Step-by-step explanation:
If the doctor has ordered 1,000cc of intravenous fluid every 8 hours and the intravenous tubing delivers 20 drops per cc, you need to calculate the flow rate in drops per minute (gtts/min). To find the flow rate, use the formula:
Total volume (in cc) × Delivery factor (drops/cc) / Total time (in minutes)
So for your example: (1,000 cc × 20 drops/cc) / (8 hours × 60 minutes/hour) = 20,000 drops / 480 minutes = 41.67 drops per minute, which you round to 42 drops per minute for practical purposes.
This is the flow rate at which you would adjust the intravenous fluid flow on the IV pump or manual regulator.