[Components of matrix support and collaborative mental health care: a narrative review]

Collaborative care between mental health and primary care is effective in improving health outcomes. The matrix support has similarities with collaborative care little explored in the literature. This article compares the two models and analyzes the matrix support from evidence on collaborative care. Narrative review. Components of each model (activities and dimensions) were identified and compared. Evidence on collaborative care informed analysis of similar components of matrix support. The dimensions of the matrix support - educational support, specialized care, regulation, co-management - and collaborative care - multiprofessional care, systematic communication, structured care, organizational support - were identified. The main similarity between the models lies in the direct collaborative activities around clinical problems which is related to effectiveness in collaborative care studies. Direct collaborative activities are a positive aspect of matrix support. Structured care and support at the organizational level should be encouraged. Future studies should refine the proposed categories and explore their use for the development of matrix support.