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THE CALIBRATION OF ESOPHAGEAL PRESSURE MEASUREMENT IN ACUTE RESPIRATORY DISTRESS SYNDROME PATIENTS
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Abstract
Background: The placement of an esophageal balloon catheter in Acute Respiratory Distress Syndrome (ARDS) patients has many clinical applications. To ensure accuracy parameters, a standardized and calibrated procedure was required. Objectives: To identify the characteristics of an occlusion test method by correcting the position and volume of the balloon. Accordingly, the development of a procedural protocol for placing an esophageal balloon catheter. Methods: A prospective observational study was conducted. The inclusion criteria were patients diagnosed with moderate to severe ARDS according to the Berlin 2012 criteria admitted to the Intensive Care Unit from November 2021 to December 2023. Results: A total of 46 patients were included in the study. The median number of times an esophageal balloon catheter was placed was 1 (Interquartile Range[IQR] 1 – 1.5), with a maximum of 4 times. The median placement time was 5 (IQR 3 – 6) minutes. The median ΔPaw/ΔPes during occlusion tests was 0.93 (IQR 0.89 – 0.95). Conclusions: Esophageal balloon catheter placement in mechanically ventilated patients is feasible at the bedside. However, it was adjusted to place the balloon in the correct position and calibrated according to procedural protocols to minimize result errors.
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References
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