Table 1.
Characteristics of the patients
|
|
Normal perfusion, n = 85
|
Poor perfusion, n = 76
|
P
value
|
| Age in yr | 0.532 | ||
| mean ± SD | 6.7 ± 3.2 | 6.8 ± 2.9 | |
| Median (IQR) | 6.3 (3.9, 8.7) | 6.7 (5.1, 9.0) | |
| Age stratification in yr, n (%) | 0.898 | ||
| ≤ 3 | 12 (14.1) | 10 (13.2) | |
| 3-6 | 28 (32.9) | 23 (30.3) | |
| > 6 | 45 (53.0) | 43 (56.6) | |
| Sex, n (%) | 0.975 | ||
| Female | 30 (35.3) | 27 (35.5) | |
| Male | 55 (64.7) | 49 (64.5) | |
| BMI in kg/m2 | 0.978 | ||
| mean ± SD | 17.4 ± 3.3 | 17.5 ± 3.4 | |
| Median (IQR) | 16.6 (15.2, 18.8) | 16.5 (15.2, 18.8) | |
| BMI-for-age, z score | 0.939 | ||
| mean ± SD | 0.75 ± 1.79 | 0.64 ± 1.31 | |
| Median (IQR) | 0.49 (-0.37, 1.81) | 0.52 (-0.32, 1.58) | |
| ≥ 1, n (%) | 31 (36.5) | 28 (36.8) | 0.961 |
| < 1, n (%) | 54 (63.5) | 48 (63.2) | |
| Ethnicity, n (%) | 1 | ||
| Han | 84 (98.8%) | 75 (98.7%) | |
| Other | 1 (1.2%) | 1 (1.3%) | |
| Cause of fracture, n (%) | 0.422 | ||
| Fall | 82 (96.4) | 72 (94.7) | |
| Hit | 2 (2.4) | 4 (5.3) | |
| Falling | 1 (1.2) | 0 | |
| Method of postoperative fixation, n (%) | |||
| Tubular plaster | 83 (97.6) | 76 (100.0) | 0.498 |
| Non-tubular plaster | 2 (2.4) | 0 | |
| Site of fracture, n (%) | 0.26 | ||
| Radius or ulna | 21 (24.7) | 17 (22.4) | |
| Humerus | 57 (67.1) | 49 (64.5) | |
| Tibia or fibula | 5 (5.9) | 10 (13.2) | |
| Femur | 2 (2.4) | 0 | |
| Degree of self-perceived pain, score, n (%) | 1 | ||
| 1 | 3 (5.3) | 3 (5.2) | |
| 2 | 53 (93.0) | 54 (93.1) | |
| 3 | 1 (1.8) | 1 (1.7) | |
| Maximum oxygen saturation of the affected limb among the six follow-ups, n (%) | 0.248 | ||
| ≥ 95% | 82 (96.5) | 76 (100.0) | |
| 90%-95% | 3 (3.5) | 0 | |
| < 90% | 0 | 0 | |
| Skin temperature of the affected limb, n (%) | 0.048 | ||
| Like the healthy contralateral limb | 85 (100.0) | 72 (94.7) | |
| Different from the healthy contralateral limb | 0 | 4 (5.3) | |
| Skin color, n (%) | < 0.001 | ||
| 1 = Red | 85 (100.0) | 45 (59.2) | |
| 2 = Dark red | 0 | 31 (40.8) | |
| Degree of swelling of the affected limb, n (%) | 1 | ||
| 1 = No | 1 (1.2) | 0 | |
| 2 = Presence of mild skin texture | 84 (98.8) | 76 (100.0) | |
| Range of motion of the affected limb, n (%) | 0.103 | ||
| 2 = Mildly restrained | 85 (100.0) | 73 (96.1) | |
| 3 = Restrained with numbness | 0 | 3 (3.9) | |
| Arterial pulsation, n (%) | |||
| 1 = Present | 85 (100.0) | 76 (100.0) | |
| Degree of pain of the affected limb | |||
| 1 = Painless | 30 (35.3) | 19 (25.0) | |
| Capillary refill time, n (%) | |||
| 1 = 1-2 s | 85 (100.0) | 76 (100.0) | |
| 2 = < 1 s | 0 | 0 | |
| 3 = > 2-3 s | 0 | 0 | |
BMI: Body mass index; IQR: Interquartile range; SD: Standard deviation.