Clinical trial NCT02717533: Blood Volume Analysis and Renal Outcomes in Hemodialysis
Official title: Blood Volume Analysis and Renal Outcomes in Hemodialysis
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: End Stage Renal Failure on Dialysis
Actual Impaired Fluid Volume
Kidney Failure
Lead sponsor: VA New York Harbor Healthcare System
Sponsor class: FED
Collaborators: name: Daxor Corporation
First posted: 2016-03-23
Enrollment: 12
Sex: ALL
Minimum age (years): 21
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Hemodialysis patients

Brief summary: The objective of the proposed study is to demonstrate that serial blood volume analysis (BVA) using RI-BVA (BVA-100, Daxor, NY) can be used to guide changes in prescription of dry weight for hemodialysis patients. The knowledge of a patient's ideal BV and degree of hypervolemia using these measurements can be used to change the prescription of DW in an objective way instead of the current standard of practice, which is based on subjective prescription of dry weight. A first study was conducted to determine the rate of plasma volume (PV) re-expansion for each patient as a guide to rate of fluid removal (results published, refer to citations). A second study was conducted in order to assess the value of a BVA measurement in guiding prescription of clinical DW. A follow up BVA would then be done in order to check if patients were closer to ideal BV than prior to changing dry weight.

Detailed description: In the first study the investigators demonstrated that BV measurement using BVA-100 is useful to determine absolute BV as well as changes in BV and correlates reasonably well with CLM-III measurements. Individual refilling ability can be determined as well. This may prove useful in prescribing and monitoring ultrafiltration rates, establishment of optimal BV in HD patients and reducing morbidity and mortality associated with chronic HD.

In the current study the investigators hypothesize that BVA can be used in the longer term to evaluate the adequacy of the current clinically estimated dry weight in dialysis patients and can be used to titrate EDW in order to improve overall volume status and decrease the incidence of blood volume misinterpretation. The investigators enrolled 12 eligible patients. Participants underwent post-hemodialysis blood volume analysis (BVA) as a baseline measurement. Based on their Blood Volume (BV) status, their prescribed estimated dry weight (EDW) was adjusted. After 3 to 6 months, participants underwent a repeat BV measurement. The investigators compared the second value to the first in order to judge whether an improvement in BV status occurred if the dry weight prescription was changed, or to judge stability if it was not.

Eligibility criteria: Inclusion Criteria:

* Age \>21 years
* Primary diagnosis of either chronic or acute kidney disease
* Currently receiving HD treatment
* Thrice-weekly or twice-weekly HD schedule
* Treated with standard bicarbonate HD for at least the preceding 6 months

Exclusion Criteria:

* Pregnant women or nursing mothers
* Known hypersensitivity to iodine, eggs, albumin or any other component of the Volumex injection kit
* Current enrollment in another investigational treatment protocol for dialysis
* Kidney transplantation
* Malignancy requiring chemotherapy
* Unmeasurable blood pressure with a sphygmomanometer
* Active hematological disease
* Active gastrointestinal bleeding
* Severe malnutrition (predialysis serum albumin \<2.6 g/dL)
* Persistent condition of intradialytic blood pressure instability (hypotensive episodes in \>80% of regular dialysis sessions) within the previous one month period

Primary outcomes:
measure: Serial measurements of absolute blood volume before and after a hemodialysis treatment to achieve the target DW at which post-HD BV equals ideal BV
timeFrame: 6 months
measure: Serial measurements of absolute blood volume 3-6 months apart to achieve the target DW at which post-HD BV equals ideal BV
timeFrame: 6 months
Secondary outcomes:
measure: Incidence of dialysis complications and BV as determined by BVA
timeFrame: 6 months
measure: Change in BV as determined by Crit-Line Monitor and reaching ideal BV by BVA
timeFrame: 6 months
Other outcomes:
Locations:
city: New York
country: United States
facility: New York Harbor VA Healthcare System Hemodialysis Unit
state: New York
Study officials:
References:
citation: Puri S, Park JK, Modersitzki F, Goldfarb DS. Radioisotope blood volume measurement in hemodialysis patients. Hemodial Int. 2014 Apr;18(2):406-14. doi: 10.1111/hdi.12105. Epub 2013 Nov 22.
citation: Malha L, Fattah H, Modersitzki F, Goldfarb DS. Blood volume analysis as a guide for dry weight determination in chronic hemodialysis patients: a crossover study. BMC Nephrol. 2019 Feb 11;20(1):47. doi: 10.1186/s12882-019-1211-7.