Greater occipital nerve block
The child was placed in a lateral position, and the ultrasound probe was placed parallel to the superior collar line. The greater occipital artery was found lateral to the external occipital ridge, and 0.2 ml/kg local anesthetic was injected into the medial artery with the in-plane technique (Fig. Greater occipital nerve blockAll anesthesia procedures were performed by the same experienced anesthetist, and the operations were completed by the same team of neurosurgeons. During the operation, if the mean arterial pressure (MAP) or HR rose by more than 30% of the baseline level, 0.1 μg/kg sufentanil was administered intravenously. The total amount of sufentanil during the operation was calculated.