Development of an automated closed-loop β-blocker delivery system to stably reduce myocardial oxygen consumption without inducing circulatory collapse in a canine heart failure model: a proof of concept study. - Nishikawa, Takuya; Uemura, Kazunori; Hayama, Yohsuke; Kawada, Toru; Saku, Keita; Sugimachi, Masaru (Journal of Clinical Monitoring & Computing, 2022)