Table 2.

Mean Values ± standard deviations for the grouped median measurements at the surgical steps shown in Table 1. Statistical significance is denoted by bold p values, as determined with a 1-tailed student T-test assuming unequal variance. The top section (A) expresses the raw data, in while the lower section (B) expresses the data as a fraction of the baseline value for only the patients with baseline measurments.

	Tissue O2 saturation (S)			Blood volume fraction (B)
Stage	No complication	Complication	p value	No complication	Complication	p value
A:step 2	0.474±0.162	0.524±0.083	0.184	0.015±0.007	0.011±0.004	0.045
A:step 3	0.436±0.176	0.448±0.053	0.402	0.014±0.006	0.012±0.003	0.146
A:step 4	0.421±0.194	0.210±0.151	0.007	0.016±0.007	0.012±0.003	0.048
A:step 5	0.503±0.132	0.482±0.108	0.346	0.020±0.007	0.019±0.010	0.430
B:step 2	0.994±0.600	0.888±0.155	0.24	2.34±2.95	1.21±0.59	0.102
B:step 3	1.091±0.674	0.744±0.150	0.073	1.79±1.40	1.09±0.44	0.075
B:step 4	0.867±0.729	0.400±0.271	0.045	1.78±1.16	1.24±0.33	0.090
B:step 5	0.936±0.479	0.870±0.146	0.286	3.05±3.23	1.34±0.89	0.062