Skip to main content

Profile of reintubated patients submitted to daily weaning screen and spontaneous breathing trial in a general ICU


Mechanical ventilation (MV) weaning is the transition of artificial ventilation to spontaneous breathing of patients intubated for more than 24 hours. Reintubation may occur, even if the weaning process has been well conducted, in 13 to 19% of the extubated patients. Daily weaning screen and spontaneous breathing trial are widely used to evaluate patients ready to be weaned, although a reintubation risk may occur [1]. The objective of this study was to verify the profile of patients that failed the weaning process and needed to be reintubated.


Mechanically ventilated patients submitted to our institutional MV weaning protocol from January to July 2012, who were extubated and failed extubation within a 48-hour period, were included in the study. The weaning protocol consisted of daily weaning screen and spontaneous breathing trial. Demographic data, MV time, ICU and hospital length of stay, causes of reintubation, and mortality rate were collected during the study period.


Two hundred patients were included, and 29 (14%) were reintubated. Of the reintubated patients, 59% were male, with a median age of 69 years (range of 24 to 94), mean Simplified Acute Physiology Score (SAPS 3) of 60 ± 11, mean MV time of 9 days ± 5, median ICU stay of 14 days (range of 5 to 30), and 46 days of hospital stay. Causes of reintubation were acute respiratory failure (38%), low level of consciousness associated with lack of airway protection (27%), and hemodynamic instability (14%). ICU discharge occurred in 70% of the patients, and 31% were tracheostomized due to dysphagia, low level of consciousness, or lack of airway protection. The ICU mortality rate was 30%. Only one tracheostomized patient died. Patients with ages ranging from 86 to 88 years had a higher incidence of low consciousness level. Patients that did not use noninvasive ventilation (NIV) after extubation were reintubated earlier than others (median of 20 hours, P <0.02 and r = -0.551), although there was no correlation with the use of NIV with mortality or MV time.


The use of daily screening and spontaneous breathing trial is associated with a low reintubation rate. Acute respiratory failure and a low level of consciousness were the most common causes of reintubation, and most patients were discharged from the ICU. NIV may prevent the need for reintubation. Patients with no perspective of short-term improvement in level of consciousness may be considered for a tracheostomy.


  1. Thille AW, Cortés-Puch I, Esteban A: Weaning from the ventilator and extubation in ICU. Curr Opin Crit Care 2013, 19: 57-64. 10.1097/MCC.0b013e32835c5095

    Article  PubMed  Google Scholar 

Download references

Author information

Authors and Affiliations


Rights and permissions

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Reprints and Permissions

About this article

Cite this article

Machado, N., Silva, C., Taniguchi, C. et al. Profile of reintubated patients submitted to daily weaning screen and spontaneous breathing trial in a general ICU. Crit Care 17 (Suppl 3), P42 (2013).

Download citation

  • Published:

  • DOI:


  • Acute Respiratory Failure
  • Spontaneous Breathing
  • Acute Physiology Score
  • Artificial Ventilation
  • Noninvasive Ventilation