Figure 5From: An in vitro study comparing a peripherally inserted central catheter to a conventional central venous catheter: no difference in static and dynamic pressure transmission Pressure Waveforms. Dynamic pressure waveforms comparing the 5 Fr and 6 Fr PICC to the 7 Fr triple lumen control. There is some phase delay in the PICC waveform. However, the peaks, troughs, and means are equal even at 300 cycles per minute.Back to article page