Comparison of 0.375% and 0.2% Ropivacaine for Postoperative Analgesia Using Ultrasound-Guided Pectoral Nerve Block in Patients Undergoing Breast Cancer Surgery: A Randomized Controlled Study

This study found no significant difference in postoperative pain, antiemetic requirements, or patient satisfaction between 0.375% and 0.2% ropivacaine. While 0.2% ropivacaine is equally effective in terms of analgesia and patient satisfaction, 0.375% may be preferred in scenarios requiring prolonged sensory blockade. While 0.2% ropivacaine is equally effective in terms of analgesia and patient satisfaction, 0.375% may be preferred in scenarios requiring prolonged sensory blockade.