The safer management of controlled drugs: Annual update 2023

Source: The CCQ 11.07.24

Learning from incidents

When we speak with organisations about medicines incidents, we focus on understanding the
circumstances surrounding them and what has been done to investigate, follow up and reduce
the chance of future recurrence.

Over the last year, we have heard about a range of cases that relate to 2 particular medicines: alfentanil and morphine. We share some of the learning from these incidents here.

Alfentanil medication errors

We have seen a recent increase in incidents relating to the incorrect selection of alfentanil – either in terms of prescribing or physically selecting a vial for administration. Alfentanil is a potent injectable opioid with a range of uses, including during anaesthesia and for some patients receiving palliative care. It is available as 500 micrograms/ml strength and 5 milligrams/ml strength (sometimes referred to as ’intensive care’ or ’high’ strength). The cases we have heard about involved wrongly selecting the ‘high’ strength.

Contributory factors have included poor knowledge and awareness of higher strengths, the competency of staff when making dose calculations, and storage of the high strength preparation on wards where it is not commonly needed or used.

Morphine sulfate – infant overdose

We are also aware of tragic circumstances surrounding overdoses of morphine in infants. In one example, morphine sulfate oral solution was administered at a dose 20 times higher than the intended dose. This happened because the infant’s parents were supplied with a 10 milligrams/5ml oral solution after discharge from the hospital, and not a 100 micrograms/ml solution. NHS England North East and North Yorkshire has produced a helpful case study with details of the causative factors and learning points to reduce the risk of future occurrences.