NAGAR, S.; PALIWAL, N.; LOHIA, R.; SALUJA, V.; DUTT, N. Comparative study of two thoracic segmental spinal anaesthesia techniques for laparoscopic cholecystectomy: low-dose hypobaric ropivacaine and isobaric ropivacaine at T10-11 intervertebral space vs. standard technique using isobaric levo bupivacaine at T8-T10 intervertebral space. International Journal of Clinical Trials, [S. l.], v. 11, n. 1, p. 17–23, 2024. DOI: 10.18203/2349-3259.ijct20240040. Disponível em: https://www.ijclinicaltrials.com/index.php/ijct/article/view/752. Acesso em: 22 feb. 2026.