Table 2 Non-pharmacological interventions investigated in randomized clinical trials for preventing clotting during continuous renal replacement therapy.

Modes

CVVH, CVVHD, or CVVHDF

10

520

Pre-dilution or post-dilution

2

48

Blood flow

Higher blood flow or standard blood flow

2

134

Catheter types

Long or short catheter

1

100

Surface-modified double-lumen catheter

1

236

Filter types

AN69ST

3

76

More and shorter hollow fiber

1

6

Flat plate fiber^a

1

38

Filter with a larger membrane surface area^a

1

38

Others

Single- or double-site infusion anticoagulation^a

1

38