Intraoperative adverse events (IAEs) are a significant unresolved problem in surgery. Breakdown in nontechnical skills (NTS) of surgical team members are a significant contributor to preventable IAEs [1], Surgical team members’ voice acoustic patterns can serve as indicators of NTS performance. Prior work has demonstrated significant differences in speech patterns across examples of good and poor NTS in a simulated cardiac surgery setting [2]. Identifying speech-based predictors of surgical team dynamics may yield unique insights towards proactively addressing communication challenges, optimizing collaboration, and improving the safety and efficiency of surgical procedures. This paper investigates the relationship between voice acoustic patterns and NTS using data collected during real-world cardiac surgery procedures.