<p><strong>Objective:</strong> To evaluate the impact of the intervention in a waiting room group called “Cor Ação” for caregivers of children with congenital heart defect hospitalized in a Paediatric Cardiovascular Intensive Care Unit (PCICU). <strong>Method</strong>: Descriptive and cross-sectional study. For data collection, an adapted “Group Assessment Questionnaire”, was applied to children’s family members and caregivers who participated in the waiting room group. After collection, data were tabulated and distributed in frequency and percentage, for later descriptive analysis. <strong>Results</strong>: Through the answers obtained, it was identified that all participants considered the group important, emphasizing that they felt hopeful, welcomed, supported, relieved, clarified and without doubts after participating. Regarding benefits, the main answers were clarification of doubts about the disease and hospitalization, multidisciplinary team support, reduced fear and increased feelings of courage and confidence. <strong>Conclusion</strong>: The intervention performed through a waiting room group provided an integrated and humanized care, which had a positive impact on the experiences of family members and caregivers of children hospitalized in a Paediatric Cardiovascular Intensive Care Unit.</p>