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Table 1 Analysis of patients with and without necrosis

From: Prediction of post-operative necrosis after mastectomy: A pilot study utilizing optical diffusion imaging spectroscopy

 

Necrosis

 
 

Yes (1)

No (9)

p-value

Age

57

48

0.278

Seroma

0

1

 

Infection

0

1

 

Diabetes

0

2

 

Radiation

0

1

 

Hypertension

1

4

 

Flap Length (cm)

15

11.9

0.009

Thickness of flap (mm)

   Superior

3.0

4.2

0.201

   Inferior

3.0

4.4

0.100

   Lateral

4.0

40

1.000

   Medial

4.0

4.0

1.000

Pre-operative Tissue Oxygenation (StO2)

   Superior

59.0

60.9

0.910

   Inferior

94.0

49.1

0.0017

   Lateral

73.5

58.2

0.371

   Medial

68.5

58.5

0.540

Post-operative Tissue Oxygenation (StO2)

   Superior

28

54.4

0.083

   Inferior

29

59.0

0.199

   Lateral

50

62.2

.0586

   Medial

27

65.2

0.058

Changes in Tissue Oxygenation

StO2 percent change (absolute StO2 change)

   Superior

-53% (-31.5)

-5.9% (-6.5)

0.280

   Inferior

-69% (-65.5)

+20% (+9.8)

0.003

   Lateral

-32% (-23.5)

+7.17% (+4.1)

0.145

   Medial

-61% (-42)

+14.6% (+6.7)

0.018

   Clavicular

+6% (+2)

+14.6% (+6.8)

0.850

  1. Variables analyzed, statistically significant variables are bold and italicized