Pain Clinical Trial
Official title:
Evaluation of the Pharmacokinetics and Safety of Bupivacaine HCl Spinal Block and EXPAREL Local Infiltration in Subjects Undergoing for Unilateral Total Knee Arthroplasty
This is a Phase 4, multicenter, open-label study designed to characterize the pharmacokinetic (PK) profile of total bupivacaine in approximately 15 adult subjects undergoing primary unilateral total knee arthroplasty (TKA) with bupivacaine hydrochloride (HCl) spinal nerve block (SNB) and EXPAREL local infiltration into the surgical site.
On Day 1, following an epinephrine "wash" of the spinal block syringe, eligible subjects will receive a single 1.6 mL dose of bupivacaine HCl 7.5 mg/mL within 2 hours prior to the surgical procedure as a spinal block. EXPAREL 266 mg in 20 mL (expanded with 70 mL of preservative-free sterile normal saline to a total volume of 90 mL) will be infiltrated into the surgical site at the end of the surgery prior to wound closure. There will be no local co-administration of the two drugs. Blood samples for bupivacaine PK analysis will be obtained from subjects at baseline (prior to bupivacaine HCl administration for nerve block), 15 minutes, 30 minutes, and 1, 2, 4, 8, 12, 24, 48, and 72 hours after the beginning of EXPAREL administration, and on Day 14. ;
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