Yn ôl fy nealltwriaeth o GyrA a GPC, mae "rhanbarth" yn cyfeirio at ardal
ddaearyddol yn unig.
"What is local or regional anaesthesia?
Anaesthesia means the absence of sensation. Regional anaesthesia means
blocking the nerve supply to part of the body, such as an arm, so the
patient cannot feel pain in that area. Local anaesthesia, strictly
speaking, means putting local anaesthetic ("freezing") around the affected
area to make it pain free. However, many people use the phrase loosely to
include regional anaesthesia."
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