Efetividade da tomografia de impedância elétrica torácica na monitorização de pacientes em ventilação mecânica

Abstract

Objectives: To evaluate the effectiveness of thoracic electrical impedance tomography. Method: Scientific Technical Opinion along the lines of a systematic review. Searches were performed in August 2017 in the Cochrane Library, MEDLINE (Via PUBMED Portal), VHL, ECRI Institute, PEDRo, EMBASE, CAPES and Google Scholar Theses and Dissertations databases. Results: We included 14 studies that showed that although there may be limitations on the use of EIT for pulmonary monitoring, especially related to low spatial resolution and the need for calibration, the technology seems to provide unique information on regional pulmonary mechanics, enabling, therefore, the team can evaluate ventilatory support, optimizing it to avoid physiological stress and pulmonary parenchymal tension, particularly in patients using PEEP. Conclusion: There was no evidence on the effectiveness of EIT in reducing the length of stay and the time of invasive mechanical ventilation. Evidence was assessed as Degree of Recommendation B and C according to the Oxford Center for Evidence Based Medicine Level of Evidence) and the recommendation was weak in favor of technology.