Table 1.

Mean substance concentrations in nmol/L

Substance	t1	t2	t3	t4	t5	t6	t7	t8	ins1	ins2
Acetone	8.84	13.8	32.4	31.4	32.1	31.7	32.9	28.4	5.37	1.48
± SD	6.85	8.83	25.6	24.3	23.6	23.3	22.3	23.5	4.68	0.94
Pentane	0.33	0.40	0.18	0.11	0.11	0.12	0.13	0.13	0.13	0.10
± SD	0.43	0.47	0.16	0.12	0.10	0.12	0.15	0.17	0.20	0.14
Isoprene	3.66	5.51	5.11	2.68	2.88	3.49	3.23	3.14	3.66	5.51
± SD	4.26	5.66	5.75	2.36	2.71	4.64	3.81	3.32	4.26	5.66

t1 after induction of anesthesia, t2 after sternotomy, t3 5 min after end of ECC, t4 30 min, t5 60 min, t6 90 min, t7 120 min after surgery, t8 150 min after surgery. Ins1 inspired concentrations in the OR, ins 2 inspired concentrations in the ICU.