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Figure 2 Right atrial pressure (RAP) versus pulmonary artery wedge pressure (PWP) during extracorporeal ultrafiltration. Symbols (mean [black circle] ± SD [bar]) are, from right to left, data obtained before ultrafiltration, after 1 L, 2 L, 3 L and 4 L of ultrafiltrate, at the end and 24 h after ultrafiltration. A 1 to 1 reduction of right and left atrial pressures suggests lowering of extracardiac constraint (see text).
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