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. Author manuscript; available in PMC: 2021 Sep 1.
Published in final edited form as: J Trauma Acute Care Surg. 2020 Sep;89(3):464–473. doi: 10.1097/TA.0000000000002797

TABLE 3:

Tissue Histology Analysis.

Pathology Severity Scores
Percent Pathology Incidence
Control (1) Partial ER-REBOA (2) Partial pREBOA-PRO p-values Control (1) (2) p-values


Liver Atrophy Centrilobular Cords 0 (0, 1.5) 1.5 (0, 1.5) 1.5 (0.8, 1.5) 0.772 33.3 66.7 88.9 0.256
Necrosis Centrilobular 0 (0, 0) 0 (0, 1.3) 0 (0, 0) 0.471 0.0 22.2 0.0 0.134
Fibrosis 0 (0, 0) 0 (0, 0) 0 (0, 0) >0.999 0.0 11.1 0.0 0.304
Degeneration Centrilobular 0 (0, 0) 1.5 (0, 2.3) 0 (0, 1.3) 0.087 0.0 66.7 33.3 0.157
Increased Circulating Neutrophils 0 (0, 0) 0 (0, 1) 0 (0, 0) 0.206 0.0 33.3 0.0 0.058
Periportal Inflammation 1 (0, 1) 1.5 (1.3, 1.5) 1 (0.5, 1.3) 0.035 66.7 100.0 77.8 0.134
   Neutrophilic inflammation 0.0 77.8 22.2 0.018
   Background Inflammation 66.7 22.2 55.6 0.147
Subcapsular Inflammation 0 (0, 0) 1 (0.5, 1) 0 (0, 0.5) 0.057 0.0 77.8 22.2 0.018
   Neutrophilic inflammation 0.0 77.8 22.2 0.018
   Background Inflammation 0.0 0.0 0.0 >0.999
Capsulitis, neutrophilic, with fibrin 0 (0, 0) 1 (0, 1) 0 (0, 0) 0.050 0.0 66.7 11.1 0.016
Hemorrhage 0 (0, 0) 0 (0, 0) 0 (0, 0) >0.999 0.0 11.1 0.0 0.304
Congestion Centrilobular 0 (0, 0) 0 (0, 0.8) 0 (0, 1.8) 0.327 0.0 22.2 44.4 0.317


Kidney Tubular Degeneration 0 (0, 0) 0 (0, 0) 0 (0, 0) >0.999 0.0 0.0 0.0 >0.999
Tubular necrosis 0 (0, 0) 0 (0, 0.5) 0 (0, 1) >0.999 0.0 22.2 33.3 0.599
Interstitial nephritis 1 (0, 1) 0 (0, 1) 1 (0, 1) 0.637 66.7 44.4 66.7 0.343
Congestion 0 (0, 0) 0 (0, 0) 0 (0, 0) >0.999 0.0 0.0 11.1 0.304


Small intestine Overall Inflammation Severity 1 (1, 2) 1 (1, 1) 1 (1, 2) 0.577 100.0 100.0 100.0 1.000
   Background Inflammation 100.0 100.0 100.0 1.000
Edema of Lamina Propria 2 (2, 2) 2 (2, 2) 2 (2, 2) >0.999 100.0 100.0 100.0 1.000
Muscularis Mucosa inflammation 0 (0, 0) 0 (0, 0) 0 (0, 0) >0.999 0.0 11.1 0.0 0.304


Skeletal muscle, Above Degeneration 0 (0, 0) 0 (0, 2) 0 (0, 0.5) 0.577 0.0 33.3 22.2 0.510
Necrosis 0 (0, 1) 1 (0.5, 2) 1 (0, 1.5) 0.388 33.3 77.8 55.6 0.317
Regeneration 0 (0, 0) 0 (0, 0.5) 0 (0, 0) >0.999 0.0 22.2 11.1 0.527


Skeletal muscle, Below Degeneration 0 (0, 0) 0 (0, 0) 0 (0, 0.5) >0.999 0.0 11.1 22.2 0.527
Necrosis 0 (0, 1) 0 (0, 1) 0 (0, 1) >0.999 33.3 44.4 44.4 1.000
Regeneration 0 (0, 1) 0 (0, 0) 0 (0, 0) >0.999 33.3 0.0 0.0 >0.999

Pathology severity scores are reported as medians with interquartile values. Wilcoxon Rank-Sum test was used to compare severity scores and chi2-test was used to compare incidences of pathology in pREBOA-PRO and ER-REBOA groups.

Key: 0 = none, 1 = mild, 2 = moderate, 3 = severe; Background inflammation = lymphoplasmacytic and eosinophilic.