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Fig. 5 | Intensive Care Medicine Experimental

Fig. 5

From: Novel method of transpulmonary pressure measurement with an air-filled esophageal catheter

Fig. 5

Power spectral analysis of esophageal and pleural pressure signals. The frequency spectra (right) and esophageal pressure signals (left) of both air-filled catheter and balloon catheter revealed concordant predominant respiratory component (large peak at 33 bpm) but also cardiogenic noise from heart rate component (second peak at 80 bpm). Pleural pressure curve and superposition of the three curves with their spectra are shown

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