| Summary: | Arthroscopic surgery of the shoulder joint and the subacromial space requires adequate visualization to be effectively performed. Visual clarity is essential to perform a safe and successful arthroscopic procedure. The major determinants to provide visualization in the subacromial space and the glenohumeral joint include adequate inflow (dependent on the dimension of the inflow cannula), flow rate versus pressure, pump system versus gravity, the use of electrocautery and radiofrequency devices, blood pressure control and hypotensive anesthesia, and the type of irrigation solution used with or without the use of epinephrine. In 2012, the cost of a 30-mL (30-mg) vial of epinephrine was $6 (adrenalin/epinephrine injection, USP, Par Pharmaceuticals), and approximately 3 to 4 bottles would be used on average for a single shoulder arthroscopy. In 2019, the same 30-mL bottle of epinephrine cost $237, a nearly 40-fold increase. The purpose of our study is to describe the various factors and techniques that can be used to maintain visual clarity in shoulder arthroscopy without the use of epinephrine in the irrigation solution and the cost savings associated without the use of epinephrine.
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