The term regional anaesthesia is identified in base64 scheme by the sequence cmVnaW9uYWwgYW5hZXN0aGVzaWE=, while the MD5 signature is equal to 7598df87ae99b145a1e56c9ed59d1c2b. The ASCII encoding of regional anaesthesia in hexadecimal notation is 726567696f6e616c20616e616573746865736961.