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Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
Published on: September 16, 2019
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Practice Variation in Spontaneous Breathing Trial Performance and Reporting
Stephanie Godard1, Christophe Herry2, Paul Westergaard3
1University of Ottawa Medical School, 451 Smyth Road, Ottawa, ON, Canada K1H 8M5.
Canadian Respiratory Journal
|July 23, 2016
Summary
Spontaneous breathing trials (SBTs) show significant practice variability across centers, impacting extubation readiness assessment. Standardizing SBT performance is crucial for accurate patient outcome prediction.
Area of Science:
- Critical Care Medicine
- Respiratory Therapy
- Mechanical Ventilation
Background:
- Spontaneous breathing trials (SBTs) are essential for evaluating extubation readiness.
- Current guidelines lack standardization for SBT performance and reporting.
- Variability in SBT practices may affect the accuracy of extubation decisions.
Purpose of the Study:
- To investigate and quantify the variability in spontaneous breathing trial (SBT) practices across multiple healthcare centers.
- To analyze performance metrics, including ventilatory support, oxygenation, and sedation levels during SBTs.
- To assess the heterogeneity in the application of clinical extubation criteria.
Main Methods:
- Analysis of data from 931 spontaneous breathing trials (SBTs) involving 680 patients across eight North American centers.
- Evaluation of SBT performance based on ventilator support settings, oxygen requirements, and sedation levels (Richmond Agitation Scale Score - RASS).
- Assessment of the utilization of clinical extubation criteria and changes in physiological parameters during SBTs.
Main Results:
- While most SBTs used 5 cmH2O of ventilator support, significant variability in oxygenation and RASS scores was observed.
- A notable percentage of SBTs (22%) were conducted in sedated patients (RASS < -2).
- Clinical extubation criteria were heterogeneous across centers, with minimal average changes in physiological variables during SBTs.
Conclusions:
- The study reveals considerable variation in spontaneous breathing trial (SBT) performance and documentation within and between institutions.
- This variability underscores the need for clearer, standardized guidelines for optimal SBT technique.
- Standardization is essential to improve the reliability of SBTs in predicting successful extubation outcomes.
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