ANALGESIC EFFICACY OF ROPIVACAINEWITH OR WITHOUT DEXAMETHASONE IN LANDMARK - GUIDED TRANSVERSUS ABDOMINIS PLANE BLOCK FOR PEDIATRIC LOWER ABDOMINAL SURGERY: A RANDOMIZED DOUBLE-BLIND STUDY. Asian Journal of Medical Research and Health Sciences, [S. l.], v. 4, n. 2, p. 229–237, 2026. DOI: 10.65605/a-jmrhs.2026.v04.i02.pp229-237. Disponível em: https://ajmrhs.com/journal/article/view/402. Acesso em: 21 may. 2026.