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. 2021 Feb 27;11(1):e111483. doi: 10.5812/aapm.111483

Table 2. Comparison of SpO₂, Heart Rate, and Hypotension in Sitting and Lateral groups Based on Measurement Time.

Measurement Time	SpO₂ (%)			Heart Rate (Per Minute)			Hypotension (Number of Patients)
	S Group, Mean ± SD	L Group, Mean ± SD	P Value	S Group, Mean ± SD	L Group, Mean ± SD	P Value	S Group (n)	L Group (n)	P Value
Before spinal anesthesia	97.02 ± 1.27	97.64 ± 1.29	0.121	93.51 ± 16.42	94.63 ± 14.84	0.713	_	_	_
After spinal anesthesia	97.43 ± 1.39	97.83 ± 1.28	0.131	95.54 ± 17.51	100.13 ± 16.17	0.165	1 (1.9)	0 (0)	0.495
Minute 2	97.67 ± 1.39	98.04 ± 1.34	0.17	94.40 ± 24.97	93.72 ± 20.08	0.877	11 (21.2)	17 (32.1)	0.206
Minute 4	97.78 ± 1.38	98.19 ± 1.32	0.129	9.261 ± 22.38	94.98 ± 22.58	0.591	26 (50)	25 (47.2)	0.772
Minute 6	97.69 ± 1.59	98.32 ± 1.25	0.026^a	92.04 ± 24.32	95.60 ± 19.84	0.412	30 (57.7)	13 (24.5)	0.001^a
Minute 8	97.63 ± 1.52	98.36 ± 1.16	0.007^a	95.83 ± 22.70	98.02 ± 18.60	0.589	19 (36.5)	3 (5.7)	0.001^a
Minute 10	97.67 ± 1.53	98.23 ± 1.44	0.059	98.90 ± 17.15	97.47 ± 19.69	0.692	4 (7.7)	2 (3.8)	0.387
Minute 15	97.83 ± 1.41	98.23 ± 1.34	0.137	100.27 ± 20.16	98.47 ± 17.56	0.627	3 (5.8)	0 (0)	0.118
Minute 20	97.79 ± 1.36	98.23 ± 1.37	0.103	99.52 ± 19.84	99.11 ± 15.89	0.908	5 (9.6)	0 (0)	0.027^a
Minute 25	97.79 ± 1.44	98.24 ± 1.33	0.093	101.23 ± 16.57	98.34 ± 14.62	0.345	4 (7.7)	1 (1.9)	0.205
Minute 30	97.85 ± 1.42	98.23 ± 1.39	0.169	100.09 ± 17.76	98.79 ± 13.70	0.674	3 (5.8)	1 (1.9)	0.363
Minute 40	97.90 ± 1.33	98.17 ± 1.44	0.324	100.36 ± 14.05	97.81 ± 14.53	0.364	1 (1.9)	0 (0)	1
Minute 50	97.90 ± 1.33	98.23 ± 1.32	0.211	99.04 ± 13.23	96.09 ± 11.68	0.234	0 (0)	0 (0)	0.211
Minute 60	98.04 ± 1.17	98.19 ± 1.34	98.19 ± 1.34	96.14 ± 11.07	93.85 ± 11.85	0.317	0 (0)	0 (0)	0.559

^aSignificant.