Cochrane · systematic review · CD013330

Non‐pharmacological interventions for preventing clotting of extracorporeal circuits during continuous renal replacement therapy

Tsujimoto, Y, Miki, S, Shimada, H, et al. · Cochrane Database of Systematic Reviews · 2021 · Cochrane Library

Kidney and TransplantAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
36
current version
GRADE rated
17
No studies
19
Included studies
NR
No studies 19 · 52.8%Ungraded 0 · 0%Very low 7 · 19.4%Low 10 · 27.8%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

CVVHD versus CVVH or CVVHDF for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespan
CVVHD vs CVVH or CVVHDF
no estimate extractedNRNo studies
Death from any cause
CVVHD vs CVVH or CVVHDF
RR 0.77 [0.42, 1.4]4 studies · 229 participantsVery low
Downgraded: risk of bias
Recovery of kidney function
CVVHD vs CVVH or CVVHDF
RR 0.91 [0.37, 2.21]2 studies · 93 participantsVery low
Downgraded: risk of bias
Vascular access complications
CVVHD vs CVVH or CVVHDF
no estimate extractedNRNo studies

CVVHDF versus CVVH for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespana
CVVHDF vs CVVH
no estimate extracted1 study · 62 participantsLow
Downgraded: risk of bias
Death from any cause at day 28 of
CVVHDF vs CVVH
RR 0.68 [0.52, 0.9]1 study · 206 participantsVery low
Downgraded: risk of bias
Recovery of kidney function
CVVHDF vs CVVH
RR 1.1 [0.86, 1.41]1 study · 96 participantsVery low
Downgraded: risk of bias, imprecision, publication bias
Vascular access complications
CVVHDF vs CVVH
no estimate extractedNRNo studies

Pre‐dilution versus post‐dilution (as defined by study investigators) for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespana
Pre‐dilution vs post‐dilution (as defined by study investigators)
no estimate extracted2 studies · 47 participantsLow
Downgraded: risk of bias
Death from any cause at day 28 of
Pre‐dilution vs post‐dilution (as defined by study investigators)
no estimate extractedNRNo studies
Recovery of kidney function
Pre‐dilution vs post‐dilution (as defined by study investigators)
no estimate extractedNRNo studies
Vascular access complications
Pre‐dilution vs post‐dilution (as defined by study investigators)
no estimate extractedNRNo studies

Higher blood flow versus standard blood flow for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespana
Higher blood flow vs standard blood flow
no estimate extracted2 studies · 499 participantsLow
Downgraded: risk of bias
Death from any cause at day 28 of
Higher blood flow vs standard blood flow
no estimate extractedNRNo studies
Recovery of kidney function
Higher blood flow vs standard blood flow
no estimate extractedNRNo studies
Vascular access complications
Higher blood flow vs standard blood flow
no estimate extractedNRNo studies

Long (> 20 cm) versus short (≤ 20 cm) catheter for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespana
Long (> 20 cm) vs short (≤ 20 cm) catheter
no estimate extracted1 study · 402 participantsLow
Downgraded: risk of bias
Death from any cause at day 28 of
Long (> 20 cm) vs short (≤ 20 cm) catheter
RR 1.38 [0.61, 3.11]1 study · 94 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Recovery of kidney function
Long (> 20 cm) vs short (≤ 20 cm) catheter
no estimate extractedNRNo studies
Vascular access complications
Long (> 20 cm) vs short (≤ 20 cm) catheter
RR 0.38 [0.2, 0.72]1 study · 94 participantsLow
Downgraded: risk of bias

Surface‐modified versus standard double‐lumen catheter with identical geometry and flow design for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespan
Surface‐modified vs standard double‐lumen catheter with identical geometry and flow design
no estimate extracted1 study · 262 participantsLow
Downgraded: risk of bias
Death from any cause at day 28 of
Surface‐modified vs standard double‐lumen catheter with identical geometry and flow design
RR 1.08 [0.76, 1.53]1 study · 236 participantsVery low
Downgraded: risk of bias
Recovery of kidney function
Surface‐modified vs standard double‐lumen catheter with identical geometry and flow design
RR 0.91 [0.7, 1.2]1 study · 236 participantsLow
Downgraded: risk of bias
Vascular access complications
Surface‐modified vs standard double‐lumen catheter with identical geometry and flow design
RR 0.33 [0.09, 1.2]1 study · 236 participantsLow
Downgraded: risk of bias

Polyethylenimine‐treated membrane (AN69ST) versus other membranes for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespan
Polyethylenimine‐treated membrane (AN69ST) vs other membranes
no estimate extracted2 studies · 56 participantsLow
Downgraded: imprecision
Death from any cause at day 28 of
Polyethylenimine‐treated membrane (AN69ST) vs other membranes
no estimate extractedNRNo studies
Recovery of kidney function
Polyethylenimine‐treated membrane (AN69ST) vs other membranes
no estimate extractedNRNo studies
Vascular access complications
Polyethylenimine‐treated membrane (AN69ST) vs other membranes
no estimate extractedNRNo studies

Flat plate versus hollow fibre filter of the same membrane type for preventing clotting of extracorporeal circuits during CKRT

Population: people with AKI receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespan
Flat plate vs hollow fibre filter of the same membrane type
no estimate extracted1 study · 38 participantsVery low
Downgraded: risk of bias
Death from any cause at day 28 of
Flat plate vs hollow fibre filter of the same membrane type
no estimate extractedNRNo studies
Recovery of kidney function
Flat plate vs hollow fibre filter of the same membrane type
no estimate extractedNRNo studies
Vascular access complications
Flat plate vs hollow fibre filter of the same membrane type
no estimate extractedNRNo studies

More and shorter versus standard hollow fibre filter of the same membrane type for preventing clotting of extracorporeal circuits during CKRT

Population: AKI patients receiving CKRT
4 questions
OutcomeEffectEvidenceStatus / GRADE
Circuit lifespan
More and shorter vs standard hollow fibre filter of the same membrane type
no estimate extracted1 study · 6 participantsLow
Downgraded: risk of bias
Death from any cause at day 28 of
More and shorter vs standard hollow fibre filter of the same membrane type
no estimate extractedNRNo studies
Recovery of kidney function
More and shorter vs standard hollow fibre filter of the same membrane type
no estimate extractedNRNo studies
Vascular access complications
More and shorter vs standard hollow fibre filter of the same membrane type
no estimate extractedNRNo studies