All ONS Member Community

Expand all | Collapse all

In Line Filter

  • 1.  In Line Filter

    Posted 01-17-2019 11:39
    ​Does it make a difference where the In line filter is placed?  Some nurses were told it should be closest to the patient, some have said any where along the line.  I was taught closest to the patient.  But does that mean the saline should be Y in above the filter?

    Heather Askren DNP
    Director of Oncology Services
    Lafayette IN

  • 2.  RE: In Line Filter

    Posted 05-13-2019 13:07
    ​The same discussion has come up today at our outpatient facility as we switch to a Closed System Transfer device. It would be so much easier for us if we could filter the hazardous drugs on the secondary set tubing that is then attached to the primary set, but that would not be closest to the patient. I'm trying hard to find the rationale for having the filter at the site closest to the patient. Can anyone assist me?

    Jennifer S. Webster, MN, MPH, RN, AOCNS
    Clinical Nurse Specialist
    Georgia Cancer Specialists affiliated with Northside Hospital Cancer Institute
    Atlanta, GA

  • 3.  RE: In Line Filter

    Posted 05-14-2019 18:30
    The rationale has to due with the design of most (but not all) IV pumps:
    With the exception of the ICU Plum pumps, all other devices rely upon head-height and hydrostatic pressure from the bag to deliver volume at the appropriate pressure to the pump. Filters, by design, slow down that flow. When placed DISTALLY, the pump can overcome the added resistance. When placed PROXIMAL to the pump, it impedes the flow which can result in proximal occlusion alarms.


    Seth Eisenberg RN ASN OCN BMTCN
    Seattle Cancer Care Alliance
    Federal Way WA