Infusion Concentration and Administration
Translate an ordered dose rate or total dose into a safe infusion volume or device rate.
How to prepare for the NMC Adult Nursing CBT
Combine reliable unit-aware calculation with newly qualified adult-nurse judgement grounded in the Code, current UK practice and the person in front of you.
Core concepts
Concept 1
Dose-rate calculations link the ordered amount per time to the preparation concentration.
Exam cue: Calculate the dose required over the stated time before converting it to volume.
Concept 2
The final device setting requires a separate check against total dose, volume, duration and prescription.
Exam cue: Reconstruct the delivered dose from the proposed setting.
Risk pitfalls and guardrails
Mixing dose per kilogram per minute with a pump setting in millilitres per hour.
Guardrail: Do not select a familiar task if it ignores deterioration, consent, medicines risk, scope, communication or follow-up.
Using a concentration without accounting for the full final volume.
Guardrail: Do not select a familiar task if it ignores deterioration, consent, medicines risk, scope, communication or follow-up.
Memory anchors
What links dose rate to pump rate?
Patient dose requirement and the final preparation concentration.
What is concentration?
Amount of medicine divided by the volume containing it.
Why calculate backwards?
It confirms that the proposed device setting delivers the prescribed dose.
What two time units commonly conflict?
Minutes in dose rates and hours in infusion-pump settings.
What if the rate exceeds a stated device or policy limit?
Stop and clarify or use the prescribed safe arrangement.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
An authorised infusion contains 400 mg in 100 mL and is prescribed over 2 hours. What pump rate delivers the full volume?
An infusion contains 1.2 g in 240 mL and must run over 4 hours. What rate is required?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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