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. 2023 Jul 31;27(9):5577–5585. doi: 10.1007/s00784-023-05177-x

Table 2.

Measurement values for flap perfusion monitoring of not revised flaps

Tissue depth Timepoint of measurement
0 h 12 h 24 h 36 h 48 h
RFFF (n = 24)
Blood flow (AU)
  2 mm 39.5 (25.0) 34.5 (41.0) 32.0 (23.0) 44.0 (29.0) 51.5 (45.0)
  8 mm 147.0 (76.0) 144.5 (79.0) 133.0 (91.0) 176.0 (100.0) 185.5 (89.0)
  3 mm 184.0 (121.0) 156.0 (113.0) 171.0 (98.0) 181.0 (64.0) 203.5 (74.0)
Hemoglobin concentration (AU)
  2 mm 72.0 (24.0) 66.5 (19.0) 62.0 (27.0) 60.5 (15.0) 59.5 (19.0)
  8 mm 41.5 (16.0) 42.0 (12.0) 39.0 (13.0) 41.0 (10.0) 41.5 (10.0)
  3 mm 93.0 (7.0) 90.0 (12.0) 86.0 (11.0) 82.5 (11.0) 85.0 (12.0)
Hemoglobin oxygen saturation (%)
  2 mm 80.0 (14.0) 70.0 (24.0) 59.0 (19.0) 63.0 (13.0) 63.5 (13.0)
  8 mm 82.0 (16.0) 58.5 (29.0) 56.0 (34.0) 70.0 (36.0) 73.0 (31.0)
  3 mm 84.0 (13.0) 69.5 (13.0) 72.0 (23.0) 68.5 (13.0) 66.5 (19.0)
ALTF (n = 2)
Blood flow (AU)
  2 mm 12.5 (–) 9.5 (–) 10.5 (–) 7.5 (–) 38.5 (–)
  8 mm 104.5 (–) 87.0 (–) 77.5 (–) 115.5 (–) 222.5 (–)
  3 mm 79.5 (–) 80.5 (–) 95.0 (–) 91.0 (–) 144.0 (–)
Hemoglobin concentration (AU)
  2 mm 60.0 (–) 42.5 (–) 47.0 (–) 44.0 (–) 57.0 (–)
  8 mm 30.0 (–) 29.5 (–) 32.5 (–) 32.0 (–) 34.0 (–)
  3 mm 80.5 (–) 74.0 (–) 76.0 (–) 74.5 (–) 78.0 (–)
Hemoglobin oxygen saturation (%)
  2 mm 54.0 (–) 22.0 (–) 32.0 (–) 31.5 (–) 43.0 (–)
  8 mm 39.0 (–) 28.5 (–) 36.5 (–) 36.5 (–) 40.5 (–)
  3 mm 66.5 (–) 50.5 (–) 39.5 (–) 39.5 (–) 70.5 (–)

Perfusion measurement values are indicated as median (with interquartile range) for each measurement time point (0 h postoperatively, 12 h postoperatively, 24 h postoperatively, 36 h postoperatively, 48 h postoperatively) separately for 2-mm, 8-mm and 3-mm tissue depth and RFFF and ALTF for not revised flaps

AU arbitrary units