BACKGROUND:Central line-associated bloodstream infections (CLABSIs) are major contributors to preventable harm in the inpatient paediatric setting. Despite multiple guidelines to reduce CLABSI, sustaining reliable central line maintenance bundle compliance remains elusive. We identified frontline and family engagement as key drivers for this initiative. The baseline CLABSI rate for all our paediatric inpatient units (January 2016-January 2017) was 1.71/1000 central line days with maintenance bundle compliance at 87.9% (monthly range 44%-100%). OBJECTIVE:To reduce CLABSI by increasing central line maintenance bundle compliance to greater than 90% using kamishibai card (K-card) audits and family 'key card' education. METHODS:We transitioned our central line maintenance bundle audits from checklists to directly observed K-card audits. K-cards list the central line maintenance bundle elements to be reviewed with frontline staff. Key cards are cue cards developed using a plain-language summary of CLABSI K-cards and used by frontline staff to educate families. Key cards were distributed to families of children with central lines to simultaneously engage patients, families and frontline staff after a successful implementation of the K-card audit process. A survey was used to obtain feedback from families. RESULTS:In the postintervention period (February 2017-December 2019), our CLABSI rate was 0.63/1000 central line days, and maintenance bundle compliance improved to 97.1% (monthly range 86%-100%, p<0.001). Of the 45 family surveys distributed, 20 (44%) were returned. Nineteen respondents (95%) reported being extremely satisfied with the key card programme and provided positive comments. CONCLUSION:Combining the key card programme with K-card audits was associated with improved maintenance bundle compliance and a reduction in CLABSI. This programme has the potential for use in multiple healthcare improvement initiatives.