Abstract Objective To build and validate a flowchart for the prevention and treatment of intestinal peristomal skin complications. Method For the construction of the algorithms, a systematic reviewwas carried out in health sciences databases comprising the last 10 years. The evaluation of the algorithms was carried out by 38 nurses. For the validation of the algorithms, theDelphi technique was used. The statistical analysis used was the content validity index and the Cronbach alpha coefficient. The questionnaire was sent by e-mail and in person after approval by the Ethics and Research Committee. Results In the first evaluation of the algorithms, there was no agreement among the experts. However, after making the corrections suggested by the evaluators, the algorithms were resent, with a 100% consensus among the evaluators. The questions used to validate the algorithms contributed favourably to the internal consistency and content validation of the instrument, since the respective Cronbach alpha was 0.9062 and the global content validity index (g-CVI) was 0.91 in the first validation and 1.0 in the second validation. Conclusion After an integrative literature review, the flowcharts were built and validated by a professional with experience in the area, showing 100% agreement among the experts in the second evaluation.

RESUMO Objetivos Desenvolver um aplicativo para prevenção e tratamento de complicações da pele periestoma intestinal. Método As fases de desenvolvimento da estrutura do aplicativo foram: Fase 1 ‒ “Concepção, identificação das necessidades do desenvolvimento do aplicativo”: nessa fase os autores identificaram, durante sua prática clínica, que alguns profissionais e cuidadores têm dificuldade em prestar assistência aos ostomizados com risco ou que adquirirem algum tipo de complicação da pele periestoma; Fase 2 ‒ “Elaboração do protótipo do aplicativo”: essa fase contemplou a revisão integrativa da literatura nas principais bases de dados; Fase 3 ‒ “Construção do aplicativo”: essa fase consistiu na elaboração da árvore de decisão dos algoritmos, estruturação do banco de dados e desenvolvimento do software; Fase 4 ‒ “Transição”: foram realizados os testes de funcionalidade do aplicativo. Resultados O aplicativo “Dermatite Periestoma App” tem 36 telas e 21 figuras descrevendo os procedimentos para prevenção e tratamento das complicações da pele periestoma intestinal. O mesmo está disponível gratuitamente naPlay Store e foi registrado no Instituto Nacional da Propriedade Industrial Ministério do Desenvolvimento, indústria e Comércio Exterior. Conclusão Este estudo possibilitou descrever as etapas do planejamento e desenvolvimento do aplicativo móvel “Dermatite Periestoma App”. As etapas percorridas indicam que o “Dermatite Periestoma App” tem grande utilidade potencial para a prática clínica na avaliação do ostomizado com complicação ou que apresenta risco para desenvolver complicações da pele periestoma, medidas preventivas, condutas terapêuticas, e para o ensino de Enfermagem por meio do uso de tecnologia.

ABSTRACT Objectives To develop an application program for prevention and treatment of complications of intestinal peristomal skin. Method The framework of the application software development were: Phase 1 - “Design, identification of the needs for the application development”: In this phase, the authors identified during their clinical practice that some professionals and caregivers find it difficult to provide care for at-risk ostomized patients or those with some kind of peristomal skin complication; Phase 2 - “Application prototype development”: this phase included the integrative literature review in the main databases; Phase 3 - “Creating the application”: this phase was intended to generate a decision tree algorithms, structure the database, and develop the software; Phase 4 - “Transition”: performing the application functionality testing. Results The application “Dermatite Periestoma App” has 36 screens and 21 figures describing the procedures for prevention and treatment of complications of intestinal peristomal skin. It is freely available from the Play Store and has been registered with the Instituto Nacional da Propriedade Industrial Ministério do Desenvolvimento, indústria e Comércio Exterior (Brazilian Ministry of Development, Industry and Foreign Trade, National Institute of Industrial Property). Conclusion This study made it possible to describe the stages of planning and development of the mobile application “Dermatite Periestoma App”. The steps taken indicate that the “Dermatite Periestoma App” has great potential for clinical practice in the evaluation of patients with stomal complications or at risk for developing peristomal skin complications, preventive measures, therapeutic approaches, and for nursing education through the use of technology.