Lesson overview
IV Infusion Time & Finish Time
Calculate IV infusion duration and an arithmetic clock finish time from a stated/verified volume and current mL/hr rate for one constant-rate interval.
About 18 minutesIV CalculationsNo account required
Learning outcomes
What you will learn
- Use a stated practice volume or a verified remaining volume / volume to be infused (VTBI), rather than assuming a nominal container label is the exact volume still intended to run.
- Use the stated current/active mL/hr rate for the relevant interval and keep ceased or historical rates with their earlier intervals.
- Calculate time using volume ÷ rate for one constant-rate interval.
- Stop and clarify when a required volume or rate is missing or source entries conflict rather than inventing a value.
- Convert the decimal part of an hour into minutes while keeping the unrounded calculation during working.
- Add a calculated duration to a start time only when asked, and label the clock finish time as conditional on unchanged inputs.
- Distinguish pump mL/hr from gravity gtt/min, which additionally requires a tubing drop factor.
- Reverse-check the arithmetic without treating the result as a clinical decision or device-programming instruction.
Clinical connection
Why this matters
A correct time calculation depends on selecting two connected values from the same interval, interpreting decimal hours correctly and recognising when a pause, rate change, missing value or conflicting source entry means the original estimate no longer applies unchanged.
Lesson plan
How the lesson works
- 1
Learn
Short teaching slides explain one idea at a time with plain-language examples.
- 2
Practise
Answer calculation or scenario questions and receive immediate feedback.
- 3
Finish
Complete the lesson mastery check and save your progress on this browser.