Continuous hemofiltration model using porcine blood for comparing filter life.

Area of Science:

• Biomedical Engineering
• Nephrology
• Hematology

Background:

• Continuous hemofiltration (CHF) is crucial for renal replacement therapy.
• Accurate hemofilter evaluation requires reliable experimental models.
• Porcine blood is a potential model for human blood in hemofiltration studies.

Purpose of the Study:

• To establish a reproducible in vitro continuous hemofiltration model using porcine blood.
• To evaluate hemofilter lifespan under standardized conditions.
• To determine optimal anticoagulant concentrations for the porcine blood model.

Main Methods:

• Utilized an in vitro hemofilter evaluation system with porcine blood.
• Administered trisodium citrate and nafamostat mesilate as anticoagulants.
• Monitored transmembrane pressure and pressure drop to assess hemofilter performance and lifespan.

Main Results:

• Porcine blood, when in contact with non-biological materials, tends towards a hypercoagulable state.
• Effective hemofilter lifetime comparisons were achieved using 7 or 8 mM trisodium citrate with nafamostat mesilate.
• Hollow fiber plugging in the hemofilters occurred subsequent to membrane pore plugging.

Conclusions:

• A continuous hemofiltration model using porcine blood is feasible.
• Adjusting trisodium citrate concentration is key to establishing this model.
• This model provides a viable platform for comparing hemofilter performance and longevity.