Effects of Supplemental Oxygen on Maternal and Neonatal Oxygenation in Elective Cesarean Section under Spinal Anesthesia: A Randomized Controlled Trial

Table 2

Data of 12 parturients who experienced desaturation.

Number	Age (yr)	BMI	SpO2	Baseline Hct (%)	Amount of preload fluid (mL)	Total dose of vasopressor consumption	Estimated blood loss (mL)	During desaturation		Most likely explanation of desaturation
								Concurrent events	Mental status
1	31	25.7	100	35.6	300	E 30 mg	300	Hypotension after delivery	conscious	Hypotension
2	34	27.6	100	36.5	700	E 30 mg	300	Hypotension after spinal block 2 minutes	conscious	Hypotension
3	35	24.9	96	36	500	E 18 mg; NE 36 𝜇g	800	Hypotension before delivery	conscious	Hypotension
4	33	32.7	99	37.7	400	E 18 mg	600	Hypotension after spinal block 7 minutes	conscious	Hypotension
5	32	30.1	100	36	400	E 42 mg; NE 16 𝜇g	600	Hypotension before delivery	conscious	Hypotension
6	29	27.6	100	38.4	400	E 6 mg; NE 12 𝜇g	600	Hypotension after spinal block 2 minutes	conscious	Hypotension
7	33	29.7	99	31.4	700	E 12 mg; NE 8 𝜇g	500	Hypotension after delivery	conscious	Hypotension
8	39	27.0	100	31.2	900	E 30 mg; NE 52 𝜇g	500	Hypotension and dyspnea after spinal block 3 minutes	conscious	High block (T2) and hypotension
9	36	26.8	98	33.9	300	E 30 mg; NE 12 𝜇g	300	Hypotension and hypoventilation after delivery	Somnolence	High block (T3) and hypotension
10	27	23.9	100	32.6	600	E 6 mg; NE 6 𝜇g	700	Received pethidine 25 mg and midazolam 2 mg because of inadequate anesthesia during tubal sterilization	Sedated	Sedation
11	31	27.6	99	34.5	500	E 30 mg; NE 8 𝜇g	350	Received ketamine 50 mg after delivery	Sedated	Sedation
12	25	23.8	100	35	650	E 24 mg; NE 24 𝜇g	300	Received midazolam 1.5 mg after delivery	Sedated	Sedation

BMI: body mass index; SpO₂: oxygen saturation before conducting spinal anesthesia; Hct: hematocrit; E: ephedrine, NE: norepinephrine.