Comparison of pulse pressure variation versus echocardiography-derived stroke volume variation for prediction of fluid responsiveness in mechanically ventilated anesthetized dogs - Gonçalves, Lucas Alaião; Otsuki, Denise Aya; Pereira, Marco A. A; Nagashima, Júlio Ken; Ambrósio, Aline Magalhães; Fantoni, Denise Tabacchi (Veterinary Anaesthesia and Analgesia, 2020)