A drop in {HEAD ~ the cassette sealing bladder pressure} can compromise the seal of {TAIL ~ the dialysis pumping cassette} relative to the dialysis instrument 
A drop in { HEAD ~ the cassette sealing bladder pressure } can compromise the seal of { TAIL ~ the dialysis pumping cassette } relative to the dialysis instrument
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH