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Sensing Savvy

Susan Eymann, MS

Susan Eymann is a medical writer with over 20 years of experience covering topics related to intraoperative blood flow measurement. She is also the author of the handbook, Flow-based Intraoperative Coronary Artery Bypass Patency Assurance, which has been widely recognized as one of the most valuable publications on graft patency currently in circulation. Susan holds a Master's of Science degree in Biology from Penn State University.

Recent Posts

Why Surveillance is Important: 9 Ways that Surveillance Assures Dialysis Adequacy

Posted by Susan Eymann, MS on Mar 13, 2019

“Any access recirculation is abnormal. Recirculation … should have prompt investigation of its cause. … If access recirculation values exceed 20%, correct placement of needles should be confirmed before conducting further studies.” http://www.kidney.org/professional/KDOQI/guidelineñupHDñVA/index.htm

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Topics: KDOQI

Is Surveillance Valuable: A Critical Review

Posted by Susan Eymann, MS on Mar 11, 2019

As the value of surveillance in managing vascular accesses is undergoing scrutiny, a critical review by distinguished leaders in the field including Drs. A Besarab, A Asif, P Roy-Chaudhury, LM Spergel and P Ravani responds to the skepticism about access surveillance.

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Topics: KDOQI

Transonic VA Surveillance Identifies Patients at Risk

Posted by Susan Eymann, MS on Mar 8, 2019

“Adequate blood flow in peripheral hemodialysis fistulae and grafts is vital to the success of hemodialysis and to the survival of the patient. Reduction in flow ... presages failure of the access device itself. Access flow can therefore be considered a fundamental property of the access that should be monitored.” Depner TA, MD, UC Davis

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Topics: KDOQI

Why Surveillance is Important for a Clinic and Its Staff

Posted by Susan Eymann, MS on Mar 6, 2019

“The Transonic Flow-QC Hemodialysis Monitor has benefited numerous dialysis-dependent patients by reducing and, in many cases, eliminating the agony of a clotted AV graft or fistula, thereby facilitating correction of access stenoses on an elective basis that prevents missed dialysis and the need for placing temporary catheters.”

Thomas Depner, MD, UC Davis

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Topics: KDOQI

Why Transonic Surveillance is Important – What the Experts Say

Posted by Susan Eymann, MS on Mar 4, 2019

The Transonic Flow-QC Hemodialysis Monitor has benefited numerous dialysis-dependent patients by reducing and, in many cases, eliminating the agony of a clotted AV graft or fistula, thereby facilitating correction of access stenoses on an elective basis that prevents missed dialyses and the need for placing temporary catheters.” Depner T, MD, UC Davis

“QA-based surveillance combining Doppler ultrasound and ultrasound dilution reduces the frequency of thrombosis, is cost effective, and improves thrombosis free and secondary patency in autologous AV.”Aragoncillo I et al, “Adding access blood flow surveillance reduces thrombosis and improves arteriovenous fistula patency: a randomized controlled trial,” J Vasc Access. 2017 Apr 20:0. (Transonic Reference # HD11190)

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Topics: KDOQI

Is Access Surveillance Worthwhile?

Posted by Susan Eymann, MS on Mar 1, 2019

Transonic ultrasound dilution technology revolutionized comprehensive vascular access patency management by enabling routine surveillance to detect decreasing access flows that presage access thrombosis failure.2-6 However, the value of vascular access surveillance continues to spark a spirited debate within the nephrology community with skeptics of surveillance challenging its value and proponents lauding its value.

Studies that attest to the value of vascular access surveillance coupled with early intervention, to reduce the thrombosis rate in both fistulas and grafts include the following:

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Topics: KDOQI

Clinic Oversight Fails Senior Patient

Posted by Susan Eymann, MS on Feb 27, 2019

Mary Christiensen moved to the senior citizen’s residence after her husband died. The move had been traumatic. Mary felt uprooted, having left behind friends and the home she and her husband had shared for 42 years. One constant remained from her old life. Three times a week she would be driven to a clinic for hemodialysis, as she had for the seven years when her kidneys failed. Even though the treatments drained her, she welcomed them because she would then feel better for a day or so.

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Topics: KDOQI

All Surveillance Is Not the Same

Posted by Susan Eymann, MS on Feb 25, 2019

Ultrasound indicator dilution is the current Gold Standard for measurement of vascular access recirculation and access flow;1

  • Ultrasound indicator dilution is the method of choice for monthly surveillance of vascular access grafts in adherence to NKF-K/DOQI guidelines
  • Available evidence suggests that access flow measurements are the best tests currently available to screen for access dysfunction.
  • Monthly surveillance is a cost-effective strategy.
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Topics: KDOQI

Why Surveillance is Important – You Can’t Always Believe What You See

Posted by Susan Eymann, MS on Feb 22, 2019

“The access looks good, why should I bother with surveillance?”

Through years of training and practice, nephrologists, interventional radiologists and surgeons have honed keen observation skills. Yes, we all tend to believe what we see. “A picture is worth a 1000 words,” is what we say and we certainly do think what we see is “real.” A measurement, on the other hand, is abstract, hard to get one’s mind around unless one has a reference and, even then, it is often hard to determine if it is actually within an acceptable threshold.

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Topics: KDOQI

3 Factors That Influence Surveillance Outcomes

Posted by Susan Eymann, MS on Feb 20, 2019

Transonic ultrasound dilution technology revolutionized comprehensive vascular access patency management by enabling routine surveillance to detect decreasing access flows that foreshadow access thrombosis failure. However, the value of surveillance continues to be scrutinized. In assessing the value of surveillance one must not consider surveillance alone, but in the context of the three factors that influence surveillance outcomes. They are:

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Topics: KDOQI

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