The term atrial septal defect is identified in base64 scheme by the sequence YXRyaWFsIHNlcHRhbCBkZWZlY3Q=, while the MD5 signature is equal to fa92aee29cd17d0c6d0132953ced165a. The ASCII encoding of atrial septal defect in hexadecimal notation is 61747269616c2073657074616c20646566656374.