Fig. 4From: Dexmedetomidine is safe and reduces the additional dose of midazolam for sedation during endoscopic retrograde cholangiopancreatography in very elderly patientsThe mean lowest heart rate during the examination. In DEX group, the value was significantly lower than that before the examination. In the conventional group, the value was similar to that before the examination. In addition, in the DEX group, the decrease in heart rate was significantly prolonged even after the examination. * < 0.01Back to article page