The efficacy of inferior vena cava diameter, perfusion index and pleth variability index on predicting hypotension in spinal anesthesia. Annals of Medical Research, [S. l.], v. 29, n. 6, p. 616–622, 2022. Disponível em: http://annalsmedres.org/index.php/aomr/article/view/4192. Acesso em: 3 apr. 2025.