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Practical Considerations for CRRT,Helen Currier RN, BSN, CNN Nancy McAfee RN, BSN, CNN,Advantages of CRRT,SLOW: Hemodynamically unstable patients may not tolerate the rapid ultrafiltration of intermittent hemodialysis CONTINUOUS: Can help preserve metabolic stability in critically ill patients; can maintain fluid balance for oliguric patients who require high daily input (IV medications, parenteral nutrition),CVVH SYSTEM,Venous chamber,Replacement fluid,Heparin,Drainage bag/UF,From the patient,To the patient,Roller pump,Hemofilter,IV pump,Air detector,bm14 roller pump,Roller pump,Venous chamber,Replacement fluid,Heparin,Drainage bag/UF,From the patient,To the patient,Roller Pump,Hemofilter,IV pump,Dialysate,IV pump,Air detector,bm14 roller pump,Roller Pump,CVVHD SYSTEM,Success with CRRT,Access Equipment Tubing/filter Prime Anticoagulation Staffing,Access-What Works?,Hemodialysis /Pheresis Line Shortest, fattest catheter possible (highest flows with least resistance) May need two single lumen lines Leg position-be creative Tape on the skin-may need to get creative,Blood Pump Systems for CRRT,CRRT Machines: Current Generation,Tubing and Equipment,Tubing volume ranges from 44-110 ml Filter volume ranges from 28 83 ml Hotline volume 18.5 ml Blood volume of patient (70 ml/kg) PRISMA 108 ml BM-25 -Smallest filter + tubing + hotline = 90.5 ml,Extracorporeal Volume,Blood volume in extracorporeal circuit is very large compared to a small infant or child Patients require a blood prime if the circuit 10% of their blood volume,Blood Prime,Whole blood PRBC + Albumin 5% PRBC + NS PRBC + FFP Larger patients Albumin 5% AN-69 filter requires special considerations,What is the link Blood bank blood has ICa of 0.04 mmol/l K+ of 40-60 mEq/l pH of 6.4 Reaction can be mitigated by buffering the blood and giving IV calcium at initiation,Bradykinin Release Syndrome (Brophy et al Am J Kidney Dis. 2001 Jul;38(1):173-8 ),Buffered System,ECMO circuits are commonly primed with a cocktail to correct the pH, Hct, and K of banked blood Addition of THAM calcium chloride Heparin Sterile Water Sodium bicarb,Bypass System,Transfuse the PRBC post-filter directly into the patient The patient is then connected to the circuit Using the same rate for priming on and infusing the PRBC (mixed with NS or Alb) Thus the patients blood can be used as a “bradykinin filter” (Brophy,et al 2001AJKD),Thermal Regulation,Hotline Blood warming tubing Place at venous return to patient Leave on at constant temperature of 39o C Treat temp elevations if they occur,Anticoagulation,Heparin Heparin bolus then continuous infusion Maintain activated clotting time (ACT) 200 Risk of bleeding, thrombocytopenia,Citrate Citrate infusion to CRRT circuit Calcium infusion to patient at separate site Monitor for metabolic alkalosis,CRRT Staffing in PICU/IICU,Nephrology/Dialysis RN sets-up & initiates therapy PICU/IICU RN manages patient Nephrology/Dialysis RN on call 24/7 Acuity assigned to pump as if a separate patient Staffing determined by acuity,3rd International Conference on Pediatric Continuous Renal Replacement Therapy (PCRRT),June, 2004 Coronado Springs Disney Orlando, Fl ,CRRT Modalities,CAVH: Continuous Arteriovenous Hemofiltration SCUF: Slow Continuous Ultrafiltration CVVH: Continuous Venovenous Hemofiltration CVVHD: Continuous Venovenous Hemodialysis,bm25: Blood Pump Module,Blood monitor Blood flow rate: 30-350 mL / min - Safety features: pressure monitors air detector clot trap venous clamp blood leak detector,bm25: Fluid Control Module,Balancing monitor Substitution pump / filtrate pump Integrated scales Fluid heater TMP monitor Operational ranges Replacement fluid 300- 9000 mL/hr Filtrate pump 100 - 11,000 mL/hr Net UFR 0.1 2000 mL/hr,2 integrated modules Blood module (bm 11a) Balancing module / scales (bm14),Baxter bm25,CRRT Modalities,CAVH: Continuous Arteriovenous Hemofiltration SCUF: Slow Continuous Ultrafiltration CVVH: Continuous Venovenous Hemofiltration CVVHD: Continuous Venovenous Hemodialysis,bm25: Blood Pump Module,Blood monitor Blood flow rate: 30-350 mL / min - Safety features: pressure monitors air detector clot trap venous clamp blood leak detector,bm25: Fluid Control Module,Balancing monitor Substitution pump / filtrate pump Integrated scales Fluid heater TMP monitor Operational ranges Replacement fluid 300- 9000 mL/hr Filtrate pump 100 - 11,000 mL/hr Net UFR 0.1 2000 mL/hr,2 integrated modules Blood module (bm 11a) Balancing module / scales (bm14),Baxter bm25,CVVH SYSTEM,Venous chamber,Replacement fluid,Heparin,Drainage bag/UF,From the patient,To the patient,Roller pump,Hemofilter
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