English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A monitorizacao da ventilacao em transplante pulmonar depende de medidas estaticas e globais a partir de testes de funcao pulmonar e tomografia computadorizada, o que nao e suficiente para detectar alteracoes regionais no parenquima pulmonar, que podem ser relevantes na avaliacao de diferentes causas de comprometimento funcional. Tomografia de Impedância Eletrica (TIE) e uma tecnica nao-invasiva e livre de radiacao com base na medicao do potencial eletrico na superficie da parede toracica. O comportamento dinâmico e as informacoes quantitativas extraidas de imagens da TIE tornam possivel avaliar as diferencas regionais na ventilacao pulmonar. Objetivos: Avaliar a ventilacao regional com a TIE, em pacientes submetidos a transplante pulmonar unilateral ou bilateral e avaliar as variacoes ventilatorias em varias posicoes diferentes. Metodos: A TIE foi realizada em 18 pacientes transplantados de pulmao (7 pacientes com transplante de pulmao bilateral, 6 pacientes com transplante unilateral por enfisema e 5 pacientes com transplante unilateral por fibrose), nas posicoes: sentada, supina, prona e decubitos lateral direito e esquerdo. Os pacientes foram orientados a realizar 30 ciclos de ventilacao espontânea e, em seguida, uma manobra de capacidade vital lenta. Resultados: A comparacao entre os grupos mostrou que houve diferenca entre porcentagem de ventilacao referente ao melhor pulmao (nos unilaterais o melhor pulmao era o transplantado e nos bilaterais o pulmao com maior ventilacao na posicao sentada). Na ventilacao espontânea os transplantes unilaterais por enfisema e fibrose tinham 79% e 83% da ventilacao gerada pelo pulmao transplantado, enquanto para os bilaterais o melhor pulmao contribuia com 57% da ventilacao. Houve reducao significativa na desproporcao da ventilacao quando comparada a ventilacao espontânea com a capacidade vital (p = 0,001). Na ventilacao espontânea houve variacao da ventilacao... Ventilation monitoring in lung transplantation is still depending on static and global measurements from lung function testing and computed tomography, what is not enough to detect regional changes in lung parenchyma, which may be relevant in evaluating different causes of functional impairment. Electrical Impedance Tomography (EIT) is a noninvasive and radiation-free technique based on the measurement of electric potentials at the chest wall surface. The dynamic behavior and the quantitative information extracted from EIT images make it possible to assess regional differences in lung ventilation. Objectives: To assess regional ventilation with EIT, in patients who underwent single or bilateral lung transplantation and to evaluate ventilatory variations in several different body positions. Methods: We performed the EIT in 18 lung transplanted patients (7 bilateral lung transplantation patients, 6 single lung transplantation patients with emphysema and 5 single lung transplantation patients with fibrosis), in seated, supine, right, left and ventral positions. Patients were asked to perform 30 cycles of spontaneous ventilation and then a slow vital capacity maneuver. Results: The comparison between groups showed that there was difference between the percentage of ventilation related to the best lung (the best lung in single lung patients was the transplanted lung and in the bilateral patients was the lung with best ventilation in the sitting position). The ventilation generated by the transplanted lung on spontaneous ventilation in single lung patients for emphysema and fibrosis were 79% and 83% respectively, whereas for the bilateral group better lung contributed with 57% of ventilation. Significant reduction in the disparity of ventilation occurred comparing the spontaneous ventilation and the vital capacity maneuver (p = 0.001). Ventilation changed in accordance...

Análise regional da dinâmica ventilatória em transplante pulmonar com tomografia de impedância elétrica