Transpulmonary driving pressure during mechanical ventilation–validation of a non‐invasive measurement method

• Published in: Acta anaesthesiologica Scandinavica 2020-02, Vol.64 (2), p.211-215
• Main Authors: Gudmundsson, Magni, Persson, Per, Perchiazzi, Gaetano, Lundin, Stefan, Rylander, Christian
• Format: Article
• Language: English
• Subjects: Adult; Aged; Aged, 80 and over; Anestesi och intensivvård; Anesthesiology; Anesthesiology and Intensive Care; balloon; Coefficient of variation; Correlation coefficient; Correlation coefficients; esophageal pressure; Esophagus; Female; Humans; Intensive care; Intensive Care Units; Lung - physiopathology; lung elastance; lung injury; Lung Volume Measurements; Lungs; Male; Measurement methods; Mechanical ventilation; Middle Aged; PEEP; pleural pressure; Positive-Pressure Respiration; Pressure; Respiration, Artificial; transpulmonary pressure; Ventilation; ventilator-induced lung injury; Ventilators
• ISSN: 0001-5172; 1399-6576; 1399-6576
• DOI: 10.1111/aas.13482

Background Transpulmonary driving pressure plays an important role in today's understanding of ventilator induced lung injury. We have previously validated a novel non‐invasive method based on stepwise increments of PEEP to assess transpulmonary driving pressure in anaesthetised patients with healthy lungs. The aim of this study was to validate the method in patients who were mechanically ventilated for different diagnoses requiring intensive care. Methods We measured transpulmonary pressure (Ptp) and calculated transpulmonary driving pressure (ΔPtp) in 31 patients undergoing mechanical ventilation in an intensive care unit. Parallel triplicate measurements were performed with the PEEP step method (PtpPSM) and the conventional oesophageal balloon method (Ptpconv). Their agreement was compared using the intraclass correlation coefficient (ICC) and the Bland Altman plot. Result The coefficient of variation for the repeated measurements was 4,3 for ΔPtpPSM and 9,2 for ΔPtpconv. The ICC of 0,864 and the Bland Altman plot indicate good agreement between the two methods. Conclusion The non‐invasive method can be applied in mechanically ventilated patients to measure transpulmonary driving pressure with good repeatability and accuracy comparable to the traditional oesophageal balloon method.