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  • Title: The effect of tranexamic acid for visualization on pump pressure and visualization during arthroscopic rotator cuff repair: an anonymized, randomized controlled trial.
    Author: Nicholson TA, Kirsch JM, Churchill R, Lazarus MD, Abboud JA, Namdari S.
    Journal: J Shoulder Elbow Surg; 2022 Nov; 31(11):2211-2216. PubMed ID: 35970278.
    Abstract:
    BACKGROUND: Tranexamic acid (TXA) has been used surgically to decrease blood loss. The ability of TXA to improve arthroscopic visualization and allow for reduction in pump pressure is unknown. The purpose of this study was to determine the effect of intravenous (IV) TXA on change in pump pressure and visualization during arthroscopic rotator cuff repair. METHODS: This was a single-center, prospective, randomized, double-anonymized controlled trial. Patients with full-thickness rotator cuff tears undergoing operative repair were enrolled. Patients were randomized to receive 1 g of IV TXA preoperatively or no TXA (control group). All patients underwent arthroscopy using saline irrigation fluid with 3 mL epinephrine injected into the first 1000-mL saline bag. Total operative time, final pump pressure, number of increases in pump pressure, total amount of irrigation fluid used, blood pressure and anesthesia medical interventions for blood pressure were recorded. Visualization was measured by a visual analog scale (VAS) completed by the surgeon at the end of the case. Postoperative VAS pain scores were obtained 24 hours after surgery. The primary aim of this study was to investigate the effect that IV TXA has on change in pump pressure (ΔP) during shoulder arthroscopy, with a ΔP of 15 mm Hg set as a threshold for clinical significance. RESULTS: There were 50 patients randomized to the TXA group and 50 patients in the no TXA group. No significant differences were found between the TXA group and the control group regarding any measure of pump pressure, including the final arthroscopic fluid pump pressure (44.5 ± 8.1 mm Hg vs. 42.0 ± 8.08 mm Hg, P = .127), the mean ΔP (20.9 ± 10.5 mm Hg vs. 21.8 ± 8.5 mm Hg, P = .845), or the number of times a change in pump pressure was required (1.7 ± 0.9 vs. 1.7 ± 0.8, P = .915). Overall arthroscopic visualization was not significantly different between the TXA group and the control group (7.2 ± 1.8 vs. 7.4 ± 1.6, P = .464). No significant difference existed between the TXA and control groups regarding postoperative pain scores assessed by VAS pain scale (4.1 ± 2.0 vs. 4.3 ± 1.9, P = .519) at 24 hours after surgery. CONCLUSION: The use of IV TXA demonstrated no measurable improvement in surgeon ability to maintain a lower pump pressure during arthroscopic rotator cuff repair. Additionally, there was no measurable improvement in arthroscopic visualization or early pain scores.
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