This study evaluates a novel technique for measuring the minimum pressure necessary to achieve a bloodless surgical field, known as a patient's limb occlusion pressure (LOP). Patients will have tourniquets applied to their arms and legs and LOP will be measured using the new technique and a gold standard Doppler ultrasound technique.
Optimal tourniquet safety depends on accurately determining the minimum pressure necessary to achieve a bloodless surgical field, known as a patient's limb occlusion pressure (LOP). However, LOP is not yet routinely measured in all patients due to limitations of current techniques. This study evaluates a novel technique for measuring the LOP through the tourniquet cuff that overcomes many limitations of current LOP measurement techniques. The goal of the study is to determine if the LOP measured by the new technique is statistically or clinically different from the LOP measured by a gold standard Doppler ultrasound technique in adult and pediatric patients
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
203
Measure the limb occlusion pressure in each patient using the new technique with the personalized tourniquet instrument.
Measure the limb occlusion pressure in each patient using the gold-standard technique with the Doppler ultrasound.
Complex Joint Clinic, Vancouver General Hospital
Vancouver, British Columbia, Canada
Cambie Surgery Centre
Vancouver, British Columbia, Canada
Foot and Ankle Clinic, St. Paul's Hospital
Vancouver, British Columbia, Canada
BC Children's and Women's Hospital
Vancouver, British Columbia, Canada
Limb Occlusion Pressure Measurement (mmHg) using the new technique and the gold-standard technique
Time frame: at time of measurement
Limb Occlusion Pressure Measurement (mmHg) using the new technique and the existing distal sensor-based technique
Time frame: at time of measurement
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