Table 2.

Microvascular blood flow in the wound edge during negative pressure wound therapy at various pressures using pathogen‐binding mesh, foam and gauze, measured using laser Doppler velocimetry

	−40 mmHg	−60 mmHg	−80 mmHg	−120 mmHg
Measurements were performed 0·5 cm from the wound edge
Pathogen‐binding mesh	−12 ± 6%	−19 ± 6%	−21 ± 6%	−15 ± 8%	n.s.
Gauze	−13 ± 3%	−17 ± 4%	−22 ± 5%	−24 ± 4%	n.s.
Foam	−27 ± 5%	−31 ± 4%	−33 ± 4%	−36 ± 4%	n.s.
	Foam versus gauze or mesh P < 0·05	Foam versus gauze or mesh P < 0·05	Foam versus gauze or mesh P < 0·05	Foam versus gauze or mesh P < 0·05
Measurements were performed 2·5 cm from the wound edge
Pathogen‐binding mesh	+45 ± 18%	+54 ± 18%	+60 ± 17%	+61 ± 16%	n.s.
Gauze	+38 ± 6%	+50 ± 9%	+50 ± 8%	+54 ± 9%	n.s.
Foam	+40 ± 8%	+58 ± 15%	+58 ± 14%	+54 ± 12%	n.s.
	n.s.	n.s.	n.s.	n.s.

Microvascular blood flow is expressed as percent change relative to baseline values. Values are presented as means ± standard error of the mean (n = 8).