Fig. 5. Histograms depicting the ratio of the left atrial (LA) A loop to total pressure–volume diagram area (A/A + V;top ), the ratio of LA conduit to total reservoir volume (CV/RV;middle ), and LA–left ventricular coupling (Ees/ELV;bottom ) during baseline conditions and during administration of 0.6, 0.9, and 1.2 minimum alveolar concentration (MAC) desflurane (solid bars), sevoflurane (open bars), or isoflurane (hatched bars). *Significantly (P < 0.05) different from CON; †Significantly (P < 0.05) different from 0.6 MAC.