Profound Intraoperative Metabolic Acidosis and Hypotension in a Child Undergoing Multilevel Spinal Fusion

Table 1

Laboratory values over time during surgery. Induction time is zero time.

Time (hrous)	0.75	2.25	3.25	4.75	5.5	6.5	7.25	7.75	8.25	8.5
PH	7.56	7.43	7.32	7.35	7.33	7.33	7.25	7.15	7.33	7.36
PaCO2 (torr)	27	31.9	37.9	29.3	31.5	32.5	36.6	38.7	35.7	40.2
PaO2 (torr)	466	285	260	274	269	296	182	125	134	159
BE (mEq/L)	2	−3	6	−9	−9	−9	−11	−15	−7	−3
HCO3 (mEq/L)	24	21.3	19.7	16.3	16.6	16.9	15.9	13.4	18.6	22.6
SaO2 (%)	100	100	100	100	100	100	99	98	99	99
Na^+ (mEq/L)	136	140	145	145	145	148	149	147	152	152
K^+ (mEq/L)	3.7	3.4	3.3	3.8	3.9	4.1	4	4.7	4.6	4.3
Ionized Ca^+2 (mmol/L)	1.1	1.16	1.15	1.15	1.16	1.19	1.19	2.14	1.18	1.09
Glu (mg/dl)	99	100	98	112	112	160	151	200	183	222
Hct (%)	35	28	25	26	33	32	29	44	41	42
Hgb (g/dl)	11.9	9.5	8.5	8.8	11.2	10.9	9.9	15	13.9	14.3