Table 1. Heart rate (HR); systolic (SAP), diastolic (DAP), and mean (MAP) arterial blood pressure; arterial carbon dioxide tension (PaCO2); arterial oxygen tension (PaO2); and dobutamine infusion rate during surgery in the horses of group FM and group M.
Variable | Group | Time after the start of surgery (min) |
|||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 15 | 30 | 45 | 60 | |||||||||||||
HR | (beats/min) | FM | 33 | ± | 2 | 34 | ± | 2 | 34 | ± | 2 | 34 | ± | 2 | 33 | ± | 2 |
M | 36 | ± | 2 | 37 | ± | 2 | 37 | ± | 2 | 37 | ± | 2 | 37 | ± | 2 | ||
SAP | (mmHg) | FM | 98 | ± | 5 | 101 | ± | 6 | 104 | ± | 5 | 103 | ± | 6 | 103 | ± | 6 |
M | 93 | ± | 4 | 100 | ± | 4 | 100 | ± | 4 | 101 | ± | 4 | 100 | ± | 4 | ||
DAP | (mmHg) | FM | 57 | ± | 1 | 58 | ± | 1 | 59 | ± | 1 | 58 | ± | 1 | 59 | ± | 2 |
M | 56 | ± | 3 | 59 | ± | 1 | 59 | ± | 2 | 59 | ± | 2 | 57 | ± | 2 | ||
MAP | (mmHg) | FM | 71 | ± | 2 | 74 | ± | 1 | 75 | ± | 1 | 74 | ± | 2 | 75 | ± | 2 |
M | 69 | ± | 3 | 73 | ± | 1 | 74 | ± | 1 | 74 | ± | 1 | 73 | ± | 1 | ||
PaCO2 | (mmHg) | FM | 51 | ± | 2 | 52 | ± | 1 | 51 | ± | 1 | 50 | ± | 1 | 51 | ± | 1 |
M | 52 | ± | 1 | 50 | ± | 1 | 52 | ± | 1 | 52 | ± | 0 | 51 | ± | 1 | ||
PaO2 | (mmHg) | FM | 496 | ± | 13 | 470 | ± | 19 | 485 | ± | 15 | 478 | ± | 16 | 488 | ± | 22 |
M | 470 | ± | 28 | 461 | ± | 52 | 478 | ± | 31 | 504 | ± | 15 | 468 | ± | 38 | ||
Dobutamine infusion rate | FM | 0.65 | ± | 0.3 | 0.60 | ± | 0.3 | 0.47 | ± | 0.3 | 0.39 | ± | 0.3 | 0.27 | ± | 0.2 | |
(µg/kg/min) | M | 0.54 | ± | 0.3 | 0.40 | ± | 0.2 | 0.45 | ± | 0.2 | 0.36 | ± | 0.2 | 0.37 | ± | 0.2 |
Data are presented as the mean ± SD. Horses in group M were maintained with sevoflurane together with medetomidine CRI. Horses in group FM were maintained with sevoflurane in combination with fentanyl-medetomidine CRI.