. 2014 Aug 21;28(5):1626–1631. doi: 10.1111/jvim.12423

Table 3.

Serial blood gas analyses to assess response to preoperative administration of methylene blue (MB) (1 mg/kg IV) to the described dog.

	8:00	9:30^a	11:15	12:17	12:45	13:51	14:08	20:54	2:10	Reference Interval
Sample	Venous	Arterial	Venous	Arterial	Arterial	Arterial	Arterial	Venous	Venous
pH	7.44	7.38	7.4	7.29	7.27	7.34	7.35	7.41	7.36	7.36–7.47 (venous)
										7.4–7.5 (arterial)
pCO₂	31.7	33.6	28.8	47.9	48	38.2	43.2	33.4	42.4	27–40 mmHg (venous)
										30–50 mmHg (arterial)
pO₂	24.1	89.1	81.3	398.5	396.9	91.3	85.5	37.8	27.6	30–60 mmHg (venous)
										91–118 mmHg (arterial)
HCO₃	22.1	20.4	18.1	23.3	22.3	20.8	24.2	21.3	24.0	17–24 mmol/L
HCT	61	55	58	40	37	37	40	52	54	40–50%
MetHb	37.2	39.7	5.9	3.9	3.4	3.1	3.4	4.9	6.8	0–1%
FiO₂ (%)	21	21	21	100	100	21	21	21	21

Sample obtained immediately before administration of MB.