Background and importance Never-events are a main point in the making secure the medication circuit. As they are preventable events we wanted to set up a support that fitted with the knowledge of our health professionals (HP). We decided to focus on one of them, namely intravenous potassium chloride (KCl).

Aim and objectives We aimed to assess the knowledge of HP about intravenous KCl to produce a relevant and suitable support.

Material and methods Two pharmacy residents created a Google Forms survey on various aspects of intravenous KCl: prescription, storage, preparation, adverse effects, recognition, and administration. For each topic there were four or five items which were true or false. All HP of our hospital could answer online or on a paper form. An item was ‘known’ if the rate of correct answers was ≥80%.

We then made a video according to the lack of knowledge found through the survey.

Finally a new Google Forms survey was created to assess the video content and the satisfaction of HP.

Results We registered 144 answers. 78 were from nurses and caregivers (60%). The rate of correct answers varied from 67% for midwives to 83% for pharmacists (mean 75%). The units of prescription for children (44%), the warning labelling (42%) and the adverse effects (22%) were the lesser known items.

The video lasted about 4 min and covered all the topics from the first survey. It was available on the hospital’s document management system.

The second survey registered 34 answers. Nearly 27% were from pharmacy technicians. The average rating of the content of the video was 9.5/10. The mean score for knowledge improvement was 8.4/10. HP declared an improvement in their knowledge about adverse effects (50%) and prescription (42%).

Conclusion and relevance The first evaluation showed an overall good knowledge about intravenous KCl. The video format was well received and will be complemented with a poster for care units. The improvement in prescription and adverse effects knowledge fits with the results of the first survey. It will be a useful tool for further courses for HP. The positive feedback will encourage us to develop the same approach for the other never-events.

Conflict of interest No conflict of interest