After the surgical checklist was completed, the surgery officially began, and the Chief Surgeon Yang Ping started to inject local anesthetic into the scalps of the two patients.
He would perform awake craniotomy under layered local anesthesia, applying it layer by layer to the scalp, periosteum, and membranes of the brain tissue. The brain tissue does not require anesthesia because it has no sensory nerves and therefore doesn't sense pain.
Even in the prone position, the sisters couldn't stop chatting away. They were discussing how to celebrate after the surgery, what each would do independently afterward, sometimes quarreling a bit, but mostly planning a beautiful life after the surgery.
The nine-year-old girls clearly have no awareness of the surgical risks; their minds are filled with beautiful thoughts. Concepts like danger and failure don't exist in their heads.
Local anesthesia? Awake craniotomy, and it's a brain stem surgery.
