Brief, factual summary of the article in Slovak: Study points to high rates of opioid use disorder (MOUD) medication use among surgical patients in the United States. The results show that surgical patients are more often prescribed MOUD compared to other patients. The study highlights the need for better understanding and management of opioid dependence in surgical patients. Research also suggests that EEG monitoring has limited utility in predicting delayed recovery after surgery. The article highlights ongoing challenges in the care of opioid-dependent patients undergoing surgery.