Reasons for organ and tissue donation refusal and opposition: a scoping review.

Objective: To map the reasons why individuals oppose or refuse organ and tissue donation, from an international perspective. Methods: A scoping review was conducted from May 2022 to February 2024 using a three-stage search strategy across five databases and Google Scholar. Data analysis involved categorizing information based on similarities and populations studied. Results: The analysis included 92 articles and national reports. The data collected were classified into two categories. Category 1 included the reasons why individuals oppose deceased donation: lack of knowledge about the donation process, 22 (16.5%); religious beliefs, 21 (15.8%); fear of mutilation or damage to body integrity, 17 (12.8%); conflicts with health care professionals during hospitalization or distrust of professionals or the organ donation process, 11 (8.3%); and unknown reasons, 11 (8.3%). Category 2 included the reasons why individuals refuse to donate a deceased relative's organs and tissues after the family interview for deceased donation: previous written or verbal expression by the potential donor, 42 (10.1%); fear of mutilation or damage to body integrity, 41 (9.9%); conflicts with health care professionals during hospitalization or distrust of professionals or the organ donation process, 38 (9.2%); religious beliefs, 37 (8.9%); and individual motivations, 36 (8.7%). Conclusions: This scoping review found that there were two main categories of reasons behind being opposed to or declining organ and tissue donation, with 23 subcategories. By mapping these reasons across international contexts, these findings provide insights for future research and can be used to inform the development of educational initiatives on organ and tissue donation.