Purpose - The purpose was to investigate what effect an intervention of low-dose, highfrequencycardiopulmonary resuscitation (CPR) training with feedback for one month wouldhave on professionals’ subjective self-assessment skill of CPR.

Design/methodology/approach - This study had a quantitative approach. In total, 38firefighters performed CPR for two minutes on a Resusci Anne QCPR. They then self-assessedtheir CPR through four multiple-choice questions regarding compression rate, depth, recoil, andventilation volume. After one month of low-dose, high-frequency training with visual feedback,the firefighters once more performed CPR and self-assessed their CPR.

Findings - With one month of low-dose, high-frequency training with visual feedback, the levelof self-assessment was; 87% (n=33) correct self-assessment of compression rate, 95% (n=36)correct self-assessment of compression depth, 68% (n=26) correct self-assessment of recoil and87% (n=33) correct self-assessment of ventilations volume. The result shows a reduced numberof firefighters who overestimate their ability to perform CPR.

Originality/value - With low-dose, high-frequency CPR training with visual feedback for amonth, the firefighters develop a good ability to self-assess their CPR to be performed withinthe guidelines. By improving their ability to self-assess their CPR quality, firefighters can selfregulatetheir compression and ventilation quality.