Proof of concept non-invasive estimation of peripheral venous oxygen saturation

Table 3 Measured and estimated data for all the subjects across the three tests

Test	Subject	R_Ven	SpvO₂%	SvO₂%	SvO_2 − SpvO₂%	R_Art	SpaO₂%	SaO₂%	SaO_2 − SpaO₂%
1	1	0.64	84.97	82	−2.97	0.56	96.02	97	0.98
	2	0.55	88.6	91	2.4	0.52	96.91	98	1.09
	3	0.63	85.45	82	−3.45	0.58	95.62	98	2.38
	4	0.87	75.5	76	0.5	0.55	96.16	96	−0.16
	5	0.43	93.32	94	0.68	0.48	98	97	−1
	6	0.68	83.2	82	−1.2	0.47	98.16	97	−1.16
	7	0.71	82.08	83	0.92	0.63	94.34	97	2.66
	7	0.62	85.83	85	−0.83	0.58	–	–	–
	8	0.67	83.5	88	4.5	0.57	95.74	97	1.26
	8	0.47	91.71	92	0.29	0.53	–	–	–
2	1	0.7	82.35	79	−3.35	0.53	96.87	99	2.13
	3	0.52	89.73	91	1.27	0.47	98.2	97	−1.2
	4	0.97	71.53	74	2.47	0.52	97.02	96	−1.02
	5	0.46	92.2	93	0.8	0.48	97.91	97	−0.91
3	5	1.07	67.39	64	−3.39	0.69	–	–	–
	6	1.23	61.05	59	−2.05	0.7	–	–	–
	6	1.7	42.08	42	−0.08	0.68	–	–	–
	7	0.79	78.73	78	−0.73	0.52	–	–	–
	7	1.24	60.75	66	5.25	0.76	–	–	–
	8	0.99	70.5	77	6.5	0.55	–	–	–
	8	1.17	63.46	59	−4.46	0.62	–	–	–
Median		0.7	82.35	82	0.29	0.55	96.77	97	0.65
Interquartile range		0.62 to 0.99	70.50 to 85.83	74.00 to 88.00	−2.05 to 1.27	0.52 to 0.62	95.81 to 97.69	97.00 to 97.00	−0.98 to 1.51

Some subjects do not have measured values as explained in “Experimental protocal”. SpaO₂ estimated using 110 − 25*R_Art and SvO₂ estimated using 111 − 40.5*R_Ven

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