Membrane-based therapeutic plasma exchange: Proposed techniques for preventing filter failure.
calculated filtration fraction
filter failure
heparin
plasma volume
pre-filter saline dilution
trans-membrane pressure
Journal
Journal of clinical apheresis
ISSN: 1098-1101
Titre abrégé: J Clin Apher
Pays: United States
ID NLM: 8216305
Informations de publication
Date de publication:
Oct 2023
Oct 2023
Historique:
revised:
19
05
2023
received:
04
03
2023
accepted:
23
05
2023
medline:
23
10
2023
pubmed:
8
6
2023
entrez:
8
6
2023
Statut:
ppublish
Résumé
Therapeutic plasma exchange (TPE) is commonly performed using membrane-based TPE (mTPE) and is prone to filter failure. We report on 46 patients, with a total of 321 mTPE treatments using the NxStage machine. This was a retrospective study with an aim to evaluate the effect of heparin, pre-filter saline dilution and the impact of total plasma volume exchanged (< 3 L vs. ≥3 L) on the rate of filter failure. Primary outcome was the overall rate of filter failure. Secondary outcomes included factors that may have indirectly influenced the rate of filter failure, including hematocrit, platelet count, replacement fluid (Fresh Frozen Plasma vs. albumin), and access type. We found that treatments that received both pre-filter heparin and saline had a statistically significant decrease in filter failure rate as compared to those that received neither (28.6% vs. 5.3%, P = .001), and compared to the treatments that received pre-filter heparin alone (14.2% vs. 5.3%, P = .015). In treatments that received both pre-filter heparin and saline predilution, we noted a significantly higher filter failure rate when the plasma volume exchanged was ≥3 L as compared to those that had <3 L exchanged (12.2% vs. 0.9%, P = .001). Rate of filter failure in mTPE can be reduced by implementing several therapeutic interventions including pre-filter heparin and pre-filter saline solution. These interventions were not associated with any clinically significant adverse events. Despite the above-mentioned interventions, large plasma volume exchanges of ≥3 L can negatively impact filter life.
Sections du résumé
BACKGROUND AND OBJECTIVES
OBJECTIVE
Therapeutic plasma exchange (TPE) is commonly performed using membrane-based TPE (mTPE) and is prone to filter failure.
DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS
METHODS
We report on 46 patients, with a total of 321 mTPE treatments using the NxStage machine. This was a retrospective study with an aim to evaluate the effect of heparin, pre-filter saline dilution and the impact of total plasma volume exchanged (< 3 L vs. ≥3 L) on the rate of filter failure. Primary outcome was the overall rate of filter failure. Secondary outcomes included factors that may have indirectly influenced the rate of filter failure, including hematocrit, platelet count, replacement fluid (Fresh Frozen Plasma vs. albumin), and access type.
RESULTS
RESULTS
We found that treatments that received both pre-filter heparin and saline had a statistically significant decrease in filter failure rate as compared to those that received neither (28.6% vs. 5.3%, P = .001), and compared to the treatments that received pre-filter heparin alone (14.2% vs. 5.3%, P = .015). In treatments that received both pre-filter heparin and saline predilution, we noted a significantly higher filter failure rate when the plasma volume exchanged was ≥3 L as compared to those that had <3 L exchanged (12.2% vs. 0.9%, P = .001).
CONCLUSIONS
CONCLUSIONS
Rate of filter failure in mTPE can be reduced by implementing several therapeutic interventions including pre-filter heparin and pre-filter saline solution. These interventions were not associated with any clinically significant adverse events. Despite the above-mentioned interventions, large plasma volume exchanges of ≥3 L can negatively impact filter life.
Substances chimiques
Heparin
9005-49-6
Saline Solution
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
555-561Informations de copyright
© 2023 Wiley Periodicals LLC.
Références
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