Observational Study
Copyright ©The Author(s) 2016.
World J Orthop. Dec 18, 2016; 7(12): 832-838
Published online Dec 18, 2016. doi: 10.5312/wjo.v7.i12.832
Table 3 Intraoperative characteristics
All patients (n = 170)TTA patients (n = 70)TFA patients (n = 100)P-value
Bilateral amputation procedure9 (5)4 (6)5 (5)
Rank of surgeon, resident/consultant %116/5445/2571/290.40
(68/32)(64/36)(71/29)
Duration of surgery, minutes (SD)81 (23)85 (26)79 (20)0.06
Neuraxial/general anesthesia121/4956/1465/350.04
%(71/29)(80/20)(65/35)
Vasopressor agents during surgery (yes)10637 (52)69 (69)0.037
Tourniquet use (yes)49 (29)35 (50)11 (11)< 0.001
Initial heart rate (beats/min) (SD)85 (16)84 (15)85 (17)0.77
Initial blood pressure (mmHg)Sys: 131 (21)Sys: 131 (20)Sys: 131 (21)0.83
Dia: 73 (13)Dia: 74 (13)Dia: 73 (12)0.552
Lowest heart rate (beats/min)72 (SD: 1.2)70 (SD: 1.9)74 (SD: 1.5)0.13
Lowest mean arterial pressure (mmHg)64 (SD: 0.9)65 (SD: 1.4)64 (SD: 1.1)0.32
Estimated blood loss (mL), median (IQR)300 (IQR: 125-475)248 (IQR: 88-408)400 (IQR: 231-569)0.15
Perioperative blood lactate (SD)1.2 (1.2)1.0 (0.5)1.3 (1.5)0.33
Perioperative acid-base balance (SD)7.39 (0.01)7.41 (0.05)7.38 (0.09)0.05