The term epidural anesthesia is identified in base64 scheme by the sequence ZXBpZHVyYWwgYW5lc3RoZXNpYQ==, while the MD5 signature is equal to f5e7cdbf9dc1a6257f71cd76839c9c38. The ASCII encoding of epidural anesthesia in hexadecimal notation is 657069647572616c20616e6573746865736961.