Westphal GA, Silva E, Gonçalves AR, Caldeira Filho M, Poli-de-Figueiredo LF. Pulse oximetry wave variation as a noninvasive tool to assess volume status in cardiac surgery . Clinics [Internet]. 2009 Apr. 1 [cited 2024 Jul. 11];64(4):337-43. Available from: https://revistas.usp.br/clinics/article/view/18017