IEC 60601-2-4:2010+A1:2018 establishes particular basic safety and essential performance requirements for cardiac defibrillators. This third edition cancels and replaces the second edition published in 2002. This edition constitutes a technical revision, revised to structurally align it with IEC 60601-1:2005 and to implement the decision of IEC SC 62A that the clause numbering structure of particular standards written to IEC 60601-1:2005 would adhere to the form specified in ISO/IEC Directives, Part 2:2004. The aim of this third edition is to bring this particular standard up to date with reference to the third edition of the general standard through reformatting and technical changes. This consolidated version consists of the third edition (2010) and its amendment 1 (2018). Therefore, no need to order amendment in addition to this publication.