The term nerve block anesthesia is identified in base64 scheme by the sequence bmVydmUgYmxvY2sgYW5lc3RoZXNpYQ==, while the MD5 signature is equal to 9b4abda3b789b23529a7bfd63a44f4ba. The ASCII encoding of nerve block anesthesia in hexadecimal notation is 6e6572766520626c6f636b20616e6573746865736961.