Blood Recirculation Procedure - Fresenius Medical Care 2008K Operator's Manual

Online PHT Failure
If the machine fails the online PHT, the message " ONLINE PHT FAILED " is displayed in the
Status Box. The blood pump does not stop during this alarm condition. This alarm can be
cleared by pressing the RESET button.
Online PHT failures can be caused by problems that make it difficult to control the patient's
fluid balance. Some failure alarms can be caused by air entering the hydraulic system from
faulty concentrate or dialyzer line connections. The operator should inspect the machine for
external air intake and fluid leaks, and make the appropriate corrections if possible.
Discontinue the treatment and take the machine out of service if an online PHT failure alarm
recurs. The hydraulics should be inspected by a qualified technician before returning the
machine to service.
If an online PHT failure occurs once during a treatment, perform the Pressure Holding Test
(from the "Test & Options" screen) before the next treatment to verify the integrity of the
hydraulic system.

Blood Recirculation Procedure

It is the responsibility of the unit's medical director to determine the appropriate anti-
coagulation protocol and the maximum length of time for recirculating blood.
1. Return blood if possible.
To recirculate blood within the extracorporeal blood circuit:
2. Touch the Tx Clock button and press CONFIRM (to 'paused').
3. Press the blood pump Start/Stop key to stop the blood pump.
4. Disconnect the arterial and venous bloodlines from access in an aseptic manner, and
connect them together with a sterile recirculation connector.
Note: Infuse heparin per facility protocol.
5. Unclamp saline bag.
6. Press the Start/Stop key to start the blood pump, and set the blood flow rate at 150–200
ml/min. An audible alarm will sound every two minutes to alert the operator that blood is
sensed while the Tx Clock is paused.
7. Press the RESET key to clear the alarm.
2008K Hemodialysis Machine Operator's Manual Rev P
Chapter 4—Monitoring the Treatment
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