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25.07.2019 | Original Research | Ausgabe 4/2020

Journal of Clinical Monitoring and Computing 4/2020

A novel method for transpulmonary pressure estimation using fluctuation of central venous pressure

Zeitschrift:
Journal of Clinical Monitoring and Computing > Ausgabe 4/2020
Autoren:
Miyako Kyogoku, Muneyuki Takeuchi, Yu Inata, Nao Okuda, Yoshiyuki Shimizu, Takeshi Hatachi, Kazue Moon, Kazuya Tachibana
Wichtige Hinweise
A part of the research data was presented by Miyako Kyogoku at 46th Symposium on the Society of Critical Care Medicine on January 23, 2017, in Honolulu, Hawaii, USA.

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Abstract

The objective of the study is to develop a correction method for estimating the change in pleural pressure (ΔPpl) and plateau transpulmonary pressure (PL) by using the change in central venous pressure (ΔCVP). Seven children (aged < 15 years) with acute respiratory failure (PaO2/FIO2 < 300 mmHg), who were paralyzed and mechanically ventilated with a PEEP of < 10 cmH2O and had central venous catheters and esophageal balloon catheters placed for clinical purposes, were enrolled prospectively. We compared change in esophageal pressure (ΔPes), ΔCVP, and ΔPpl calculated using a corrected ΔCVP (cΔCVP-derived ΔPpl). cΔCVP-derived ΔPpl was calculated as κ × ΔCVP, where κ was the ratio of the change in airway pressure (ΔPaw) to ΔCVP during the occlusion test. cΔCVP-derived ΔPpl correlated better than ΔCVP with ΔPes (R2 = 0.48, p = 0.08 vs. R2 = 0.14, p = 0.4) with lesser bias and precision in Bland–Altman analysis. The plateau PL calculated using the cΔCVP-derived ΔPpl (17.6 ± 2.6 cmH2O) correlated well with the ΔPes-derived plateau PL (18.1 ± 2.3 cmH2O) (R2 = 0.90, p = 0.001). Our correction method can estimate ΔPpl and plateau PL from ΔCVP with a reasonable accuracy in paralyzed and mechanically ventilated pediatric patients with respiratory failure.

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