Effect of Tranexamic Acid (TXA) Administered Prior to Shoulder Arthroscopy on Postoperative Pain Medication Usage: A Randomized Controlled Trial

This Study Will Evaluate Whether TXA Reduces Pain

To our knowledge, no studies examining the use of TXA after shoulder arthroscopy in an outpatient setting have been published. This study will evaluate whether TXA reduces pain as measured by opioid consumption and a visual analog scale for pain (VAS) for the first 72 hours after surgery. Secondary outcomes will examine whether patients were satisfied overall with their postoperative pain control, whether the time to first opioid use is increased, and whether the surgeon perceives improved surgical visualization in patients who received TXA. We will also examine the number of times pump pressure was increased during the procedure to improve visualization.

We will conduct a double-blind, placebo-controlled randomized clinical trial (RCT) to assess if there is benefit to use of TXA in shoulder arthroscopy. The study will include patients scheduled for rotator cuff repair with or without concomitant procedures. Patients undergoing shoulder arthroscopy for any other reason will be excluded, including isolated labral repair, isolated distal clavicle excision, frozen shoulder, isolated decompression or debridement. Medical exclusion criteria will include allergy or known sensitivity to TXA, known renal disease with previously documented creatinine \>1.5, history of coagulopathy, DVT or PE requiring ongoing anticoagulation, baseline long-acting opioid use, a documented history of COVID-19 infection within 90 days of surgery. A total of 150 participants will be enrolled and randomized 1:1 to receive either a standard dose of TXA (1000 mg) or an equivalent volume of placebo (normal saline, NS) at the time of surgery. The primary outcome measure will be postoperative opioid consumption as measured by pill count for 72 hours, calculated as morphine equivalent dose (MED). Secondary outcome measures will include subjective measurement of pain as rated on the VAS, time to first opioid use, and patient satisfaction with postoperative pain management at 72 hours. Operative time, surgeon rating of overall visibility during the procedure, and number of times pump pressure was increased during the procedure will also be compared between groups.

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