Devices

14 NPWT systems or Redon drain

Wound filler or topical NP only

NPWT [10]

Wound filler

Foam or gauze

Foam and tissue Granulation [14]-[17]

Either [5]

Interface material

Impregnated gauze

No statistical studies

Inconclusive

Drainage conduit

Preforated or non-perforated

Within or on top of wound filler

Perforated [9]

NP magnitude

−25 mmHg to −400 mmHg

Tissue perfusion modulation

−50 [12] [18]-[20] to −80 mmHg [11] [15] [21] [22]

NP waveforms

Continuous, square, or triangular wave

Inconsistent results [23] [24]

Inconclusive

Treatment duration

Study duration only

-

Inconclusive