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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