O sistema de referência e contrarreferência é um dos pontos estratégicos para consolidação do Sistema Único de Saúde, a fim de garantir a integralidade da assistência. Estudo qualitativo respeitando os passos propostos pelo referencial da fenomenologia da percepção, com base na obra de Merleau- Ponty e Martins, abrangendo três momentos: a descrição, a redução e a compreensão. Objetivou apreender a percepção da equipe multiprofissional de saúde de um serviço de referência e desvelar os desafios no processo de referenciamento. Participaram quinze profissionais atuantes no ambulatório de um hospital universitário de nível terciário, dentre eles: enfermeiros, psicólogos, nutricionistas, fonoaudiólogo e médicos. A análise dos dados apontou a necessidade de aprimorar o processo de referenciamento evidenciando dificuldades na sua efetivação, fortemente relacionadas a: excesso de demanda, falta de tempo do profissional, insuficiência de serviço de média complexidade. A fragilidade de comunicação entre os níveis de atenção provoca uma fragmentação da assistência, com consequente diminuição na resolução dos problemas. Paralelamente, a contrarreferência ocorre quando há excesso de demanda e escassez de vagas no serviço terciário. Conclui-se que a não realização da contrarreferência alimenta falhas no sistema de saúde, prejudicando a integralidade da atenção. A educação permanente da equipe multiprofissional de saúde é necessária para a melhoria do processo.

BACKGROUND A primary underlying cause of postoperative complications is related to the surgical stress response, which may be mitigated by hyperbaric oxygen therapy (HBOT), the intermittent administration of oxygen at a pressure higher than the atmospheric pressure at sea level. Promising clinical studies have emerged suggesting HBOT's efficacy for reducing some postoperative complications. Notwithstanding, the effectiveness (if any) of HBOT across a range of procedures and postoperative outcomes has yet to be clearly quantified. OBJECTIVE This systematic review aimed to summarise the existing literature on peri-operative HBOT to investigate its potential to optimise surgical patient outcome. DESIGN A systematic review of randomised controlled trials (RCTs) with narrative summary of results. DATA SOURCES MEDLINE, EMBASE, CINAHL and the Cochrane Central Register of Controlled Trials were searched without language restrictions through to 19 June 2018. ELIGIBILITY CRITERIA Studies were included if they involved patients of any age undergoing any surgical procedure and provided with at least one HBOT session in the peri-operative period. Two independent reviewers screened the initial identified trials and determined those to be included. Risk of bias was assessed using the Cochrane Risk of Bias tool for RCTs. RESULTS The search retrieved 775 references, of which 13 RCTs were included (627 patients). Ten RCTs (546 patients) reported treatment was effective for improving at least one of the patient outcomes assessed, while two studies (55 patients) did not find any benefit and one study (26 patients) found a negative effect. A wide range of patient outcomes were reported, and several other methodological limitations were observed among the included studies, such as limited use of sham comparator and lack of blinding. CONCLUSION Peri-operative preventive HBOT may be a promising intervention to improve surgical patient outcome. However, future work should consider addressing the methodological weaknesses identified in this review. TRIAL REGISTRATION The protocol (CRD42018102737) was registered with the International ProspectiveRegister of Systematic Reviews (PROSPERO).