Table 1 Clinical characteristics of the study population.

From: Attached compared with unattached surface probes for monitoring flap perfusion in microvascular head and neck reconstruction: a feasibility study

Number

34

Sex (n)

 Male

19 (55.9%)

 Female

15 (44.1%)

Age (years)

70.5 (20.0)

BMI (kg/m2)

24.1 (5.9)

ASA (n)

 1

0 (0.0%)

 2

13 (38.2%)

 3

19 (55.9%)

 4

2 (5.9%)

Flap type (n)

 RFFF

14 (41.2%)

 ALTF

12 (35.3%)

 FFF

8 (23.5%)

Flap location (n)

 Submandibular

12 (35.3%)

 Cheek

5 (14.7%)

 Infraorbital

2 (5.9%)

 Nasal

2 (5.9%)

 Orbital

5 (14.7%)

 Auricular

6 (17.6%)

 Temporoparietal

2 (5.9%)

Arterial anastomosis recipient vessel (n)

 External carotid artery

9 (26.5%)

 Facial artery

17 (50.0%)

 Superior thyroid artery

8 (23.5%)

Venous anastomosis recipient vessel (n)

 Internal jugular vein

19 (55.9%)

 Internal jugular vein + other vein

6 (17.6%)

 Other vein

9 (26.5%)

Surgery duration (min)

496.0 (144.0)

Flap ischemia duration (min)

99.0 (28.0)

  1. Parameters are indicated as numbers (with percentage) for categorical data (sex, ASA, flap type, flap location, arterial anastomosis recipient vessel, venous anastomosis recipient vessel) or median (with interquartile range) for metric data (age, BMI, surgery duration, flap ischemia duration).
  2. BMI body mass index, ASA American Society of Anesthesiologists score, RFFF radial free forearm flap, ALTF anterolateral thigh flap, FFF fibular free flap.
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