Table 3.
Wound Tissue and Drainage Characteristics From Start to End of APWT (N = 50)
| Wound Characteristic | Baseline % (n) | End of Treatment % (n) | P Valuea |
|---|---|---|---|
| Amount of healthy granulation tissue | <.0001b | ||
| Complete closure (%) | 0 | 24 (12) | |
| 76-99 | 37 (18) | 65 (32) | |
| 51-75 | 2 (1) | 0 | |
| 26-50 | 12 (6) | 0 | |
| 1-25 | 16 (8) | 4 (2) | |
| None | 33 (16) | 6 (3) | |
| Peri-wound skin | .0002c | ||
| Normal | 28 (14) | 64 (32) | |
| Irritation | 12 (6) | 8 (4) | |
| Erythematous | 30 (15) | 2 (1) | |
| Edematous | 4 (2) | 2 (1) | |
| Callus | 18 (9) | 10 (5) | |
| Other | 36 (18d) | 16 (8e) | |
| Undermining | NSf | ||
| None | 96 (48) | 96 (48) | |
| Present | 4 (2) | 4 (2) | |
| Tunneling | .16 | ||
| None | 94 (47) | 98 (49) | |
| Present | 6 (3) | 2 (1) | |
| Odor | .10 | ||
| None | 88 (44) | 96 (48) | |
| Present | 12 (6) | 4 (2) | |
| Maceration | .17 | ||
| None | 76 (38) | 88 (42) | |
| Minimal | 6 (3) | 13 (6) | |
| Moderate | 16 (8) | 0 | |
| Maximum | 2 (1) | 0 | |
| Amount of drainage | .03 | ||
| None | 7 (3) | 27 (11) | |
| Scant | 48 (22) | 56 (23) | |
| Moderate | 41 (19) | 17 (7) | |
| Maximum | 4 (2) | 0 | |
| Type of drainage | .48 | ||
| Sanguinous | 5 (2) | 3 (1) | |
| Serous | 56 (24) | 60 (18) | |
| Serosanguineous | 33 (14) | 37 (11) | |
| Purulent | 7 (3) | 0 | |
| Amount of eschar | .019 | ||
| None | 72 (34) | 94 (45) | |
| <50% | 13 (6) | 2 (1) | |
| ≥50% | 15 (7) | 4 (2) | |
| Amount of fibrin slough | <.0001 | ||
| None | 31 (15) | 75 (36) | |
| <50% | 16 (8) | 21 (10) | |
| ≥50% | 53 (26) | 4 (2) |
a
McNemar test.
b
Comparison of >75% granulation tissue at start versus end of treatment.
c
Comparison of normal peri-wound skin at start versus end of treatment.
d
Other (no.): atrophy blanche (3), desiccated (1), dry (2), fungal (1), hemosiderin (1), hyperkeratotic (1), indurated (5), inflammation (2), macerated (1), punched out (1).
e
Other (no.): dry (2), induration (1), atrophy blanche (3), fungal(1), hemosiderin (1).
f
NS, not statistically significant. Identical distributions at baseline and follow-up preclude calculation of a P value for the McNemar test.