Objective To analyze the relationship between thigh circumference (TC), systolic blood pressure (SBP) and tourniquet pressure in lower limb surgery, and discuss the personalized pressure of tourniquet. Methods Fifty-five patients who underwent lower limb surgery using tourniquet in General Hospital of Southern Theatre Command of PLA from April, 2018 to May, 2018 were included in the study. Patients were separately divided into groups according to the thigh circumference, systolic blood pressure and body mass index (BMI). The intraoperative tourniquet pressure, intraoperative blood bleeding, TC, SBP and BMI were recorded. The changes of tourniquet pressure and the correlation between tourniquet pressure and TC, SBP and BMI were recorded. Results In remarkable effect of hemostasis, there were significant differences in minimum pressure of tourniquet and the pressure difference between tourniquet and SBP in each group (P<0.05) . The tourniquet pressure was positively correlated with TC (r=0.734, P<0.05) and SBP (r=0.889, P<0.05), but it was not correlated with BMI (r=0.076, P>0.05), respectively. Conclusions The personalized tourniquet pressure can be set according to TC and BDP in lower limb surgery. Meanwhile, if the SBP is greater than 130 mmHg, the tourniquet pressure should add an extra 30 mmHg. In addition, there is no reference value for BMI in tourniquet pressure setting.
Key words
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Lower limb /
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Tourniquet pressure /
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Thigh circumference /
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Systolic blood pressure /
BMI
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