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Figure 3 | Respiratory Research

Figure 3

From: Positive End-Expiratory Pressure may alter breathing cardiovascular variability and baroreflex gain in mechanically ventilated patients

Figure 3

Comparison of the CDM parameters between PEEP 5 and PEEP 10 in a subject representative of the mean behavior of all patients. This subject exhibited great differences as he was classified in the unstable group at PEEP 5 and reclassified in the stable group at PEEP 10. So, the figure mainly focused on the greater variability of the HF phase and amplitude of RR and SBP, at PEEP 5. This greater variability was estimated by the standard-deviation of the time series, the maximal drift of the phase, the percentage of time spent below the amplitude threshold (dashed line).

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