Table 1 Patient profile at study enrolment

Number of patients

13

Male/female

8/5

Age (years)

64 ± 12

Height (cm)

160 ± 11

Body weight (kg)

58 ± 14

Operative time (min)

252 ± 50

Intraoperative dose of fentanyl (μg/kg)

21 ± 8

Carbon dioxide production (ml/min per kg)

2.6 ± 0.2

Dead space fraction

0.48 ± 0.02

Venous admixture fraction

0.08 ± 0.02

CO with thermodilution (l/min)

5.3 ± 2.1

Compliance of the respiratory system (ml/cmH₂O)

49.8 ± 14.8

Resistance of the respiratory system (cmH₂O·s per l)

12.0 ± 2.9

Background disease

Coronary artery disease

6

Acquired valve disease

6

Thoracic aortic aneurysm

1