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Percentage change in hemodynamic parameters with CPAP administration. Max CPAP, maximal tolerated CPAP (12 cmH2O, 14 cmH2O, and 18 cmH2O in each respective patient); Min CPAP, minimal CPAP pressure reached before end of study (0 cmH2O, 0 cmH2O and 4 cmH2O for each respective patient).
