Does the Type of Surgical Headwear Worn in the OR Matter? A Review of Evidence and Opinions.

Proper surgical attire is essential in decreasing surgical site infections; however, the effectiveness of the different types of headwear is a controversial topic. We conducted a narrative review based on studies identified through a focused literature search to summarize and critically assess evidence and opinions on the most appropriate type of headwear for OR personnel. We included 48 articles: 17 original research studies and 31 non-peer-reviewed articles of various types. Research published before 2014 mostly supports the complete coverage of all hair, which aligns with the 2015 AORN guidelines. However, more recent literature rebuts these guidelines and emphasizes the importance of clean headwear. Although earlier studies (published before 2017) lacked scientific rigor, later studies (published after 2017) have other various limitations, including missing data on compliance, surgery-related techniques, and surgical attire other than headwear. The findings from this review highlight the importance of solid evidence-based guidelines and expert collaboration.