Intraoperative Hypertension Clinical Trial
Official title:
Femoral Peri-arterial Local Anesthetic Injection Via Peri-arterial Perineural Catheter Reverses Tourniquet Associated Ischemic Hypertension
The goal of this prospective randomized double-blind study is to determine if an ultrasound guided peri-arterial injection of local anesthetic (LA) superomedially the femoral artery via peripheral nerve catheter reverses ischemic hypertension associated with prolonged lower extremity tourniquet time.
This is a research study to find out if injection of numbing medication by the large artery going down your leg will improve high blood pressure caused by the tourniquet. Depending on whether you enroll in this study, you may receive an injection of local anesthetic (numbing medication) or saline (salt water) by your femoral artery (the large artery going down your leg). This is to see how this injection impacts your blood pressure during surgery as the surgeons use a tourniquet (device that squeezes your leg) to help decrease the bleeding during surgery. Oftentimes the tourniquet causes your blood pressure to go up, but the numbing medication may help return your blood pressure close to its normal level. The rest of your anesthesia care, including other nerve blocks and general anesthetic, will be the same as it would be without participating in the study. You will be enrolled in this study for 24 hours. ;
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