This is the second edition of CAN/CSA-C22.2 No. 60601-2-27, Medical electrical equipment - Part 2-27: Particular requirements for the safety, including essential performance, of electrocardiographic monitoring equipment, which is an adoption without modification of the identically titled CEI/IEC (Commission Electrotechnique Internationale/International Electrotechnical Commission) Standard 60601-2-27 (second edition, 2005-08). It supersedes the previous edition published in 1998 as CAN/CSA-C22.2 No. 601.2.27, Medical electrical equipment - Part 2: Particular requirements for the safety of electrocardiographic monitoring equipment (adopted CEI/IEC 601-2-27:1994).