Fig. 4From: Using pulse oximetry waveforms to detect coarctation of the aortaPostoperative differences in maximum rates of rise and fall. The Y-axis represents a normalized slope (waveform amplitude divided by time). There was no significant difference between groups in rate of rise (p value 0.61) or fall (p value 0.93) following surgical repair of coarctation of the aortaBack to article page