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  • Title: [Important step of weaning from mechanical ventilation: accurate assessment of respiratory muscle strength].
    Author: Qin Y, Gao X.
    Journal: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue; 2024 Apr; 36(4):337-339. PubMed ID: 38813624.
    Abstract:
    Mechanical ventilation (MV) is a powerful mean to rescue patients with respiratory failure. In view of the different etiology and basic respiratory function of patients with respiratory failure, weaning failure often occurs. Prolonged MV time is often accompanied by many complications. Thus, deeply understanding the pathophysiological changes of respiratory failure and strengthen monitoring of respiratory mechanics are helpful to optimize MV parameter settings, reduce ventilator-induced lung injury and wean from MV as early as possible. A successful weaning from MV depends on many factors, the most important factors are respiratory muscle strength, respiratory load and respiratory drive. Spontaneous breathing trial (SBT) is an important part of weaning process. The main purpose of implementing SBT is to screen patients and opportunities to weaning from MV, and find reversible reasons for not passing SBT. Because the accuracy of SBT in assessing weaning prognosis is about 85%, it is not adequate for difficult weaning patients. Standardized measurement of weaning indicators for patients with difficulty weaning is conducive to accurate assessment of respiratory muscle strength and improve the success rate of weaning from MV.
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