Abstract
The present findings indicate that risk factors for postoperative PIs include older age, requiring a blood transfusion, and longer ICU stays, which may increase nursing workload regardless of surgery type. Future research on postoperative PIs in patients undergoing neurosurgery should consider additional ICU work environment factors, including nurse-to-patient ratio and immobility-related factors such as duration of medical device use. Further, international comparisons of risk factors for postoperative PIs among patients undergoing neurosurgery are needed.