Impact of Anesthesiology Interventions on Postoperative Outcomes in Adult Patients Undergoing Shoulder Surgery

Impact of Anesthesiology Interventions on Postoperative Outcomes in Adult Patients Undergoing Ambulatory Shoulder Surgery

This retrospective, population-based cohort study will evaluate the comparative effectiveness of peripheral nerve blocks on patient outcomes after ambulatory shoulder surgery in adults patients undergoing surgery in Ontario.

First, investigators will validate health administrative data codes to demonstrate the accuracy of Ontario-wide anesthesia type and regional anesthesia interventions using a reference standard (Ottawa Hospital Data Warehouse data). Then, these validated exposures, in combination with validated outcome measures, will be used to examine the impact of anesthesia interventions on patient and health system outcomes for ambulatory shoulder surgery.

Inclusion Criteria:

• Ontario residents
• Aged 18 years and older
• Elective ambulatory shoulder surgery performed in Ontario between April 2009 and December 2016.

Exclusion Criteria:

• Emergency Surgery
• If a patient undergoes multiple elective shoulder surgeries within the time period, only the first surgery will be included for any participant in the study period.