SciELO - Scientific Electronic Library Online

 
vol.35 número9Clasificación de los trastornos mentales en la Unidad de Cuidados Intensivos índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Medicina Intensiva

versão impressa ISSN 0210-5691

Resumo

GONZALEZ-CASTRO, A. et al. Utility of the dead space fraction (Vd/Vt) as a predictor of extubation success. Med. Intensiva [online]. 2011, vol.35, n.9, pp.529-538. ISSN 0210-5691.

Purpose: To determine the value of Vd/Vt as a predictor of extubation failure in patients with mechanical ventilation admitted to the intensive care units. Design: A prospective, observational cohort study conducted from 1 September 2010 to 1 March 2011. Setting: General intensive care unit (G-ICU) of a third level university hospital. Patients or participants: The study included patients on mechanical ventilation (MV) for over 12hours, and who in the process of weaning were subjected to low-level pressure support. Exclusion criteria were age under 18 years, ventilation via tracheotomy and patients failing to cooperate for different reasons. During the study, 392 patients were admitted to the G-ICU; of these, 214 required MV. The weaning process was started in 154 cases. Fifty-four patients were excluded from the study, and 24 were not extubated from MV. A total of 76 patients were finally extubated and analyzed. Variables of interest: Vd/Vt was calculated as the ratio (PaCO2-ε CO2)/PaCO2, with the recorded parameters. Results: Logistic regression analysis showed a significant association between the Vd/Vt and extubation failure, with OR=1.52 (95%CI 1.11 to 2.09, p=0.008). The area under the ROC curve with respect to the prediction of extubation failure according to the Vd/Vt value was 0.94 (95%CI 0.86 to 0.98, p<0.0001). Conclusions: Vd/Vt is a powerful predictor of extubation failure in patients on MV.

Palavras-chave : Weaning; Mechanical ventilation; Dead space; Prognosis.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons