Development of a measure for maternal confidence in knowledge and understanding and examination of psychosocial influences at the time of a child's heart surgery

Purpose The purpose was to develop a maternal confidence in knowledge and understanding scale (Maternal Knowledge and Understanding Scale [MKUS]) and examine the effect of psychosocial factors at the time of a child's heart surgery. Design and Methods Using cross‐sectional design, the MKUS was developed and tested. Validated instruments were used to examine the impact of psychosocial factors. Results The MKUS showed acceptable internal consistency (Cronbach's alpha .78). Higher levels of maternal anxiety and lower levels of social support were associated with lower MKUS scores (p < .05). Practice Implications A measure of maternal confidence in knowledge and understanding could draw attention to psychosocial factors and opportunities to enhance nursing support.