Area of Science:

• Cardiology
• Medical Devices
• Preventive Medicine

Background:

• Sudden cardiac death (SCD) remains a significant clinical challenge.
• Current primary prevention strategies for SCD using implantable cardioverter-defibrillators (ICDs) rely on heart failure severity and left ventricular dysfunction, which have limitations.
• These limitations include low predictive accuracy and the need for widespread ICD implantation, increasing risks and costs.

Purpose of the Study:

• To review the historical development of ICDs for SCD prevention.
• To evaluate the effectiveness and limitations of current SCD prevention concepts.
• To explore how advancements in myocardial imaging and medical genetics can refine ICD implantation criteria.

Main Methods:

• Literature review of ICD development and application in SCD prevention.
• Analysis of current guidelines and clinical practices for primary SCD prevention.
• Discussion of emerging technologies for myocardial assessment and genetic profiling.

Main Results:

• The efficacy of ICDs in primary SCD prevention is challenged by the suboptimal accuracy of existing criteria.
• Myocardial fibrosis assessment through advanced imaging techniques offers a more precise method to identify at-risk individuals.
• Medical genetics provides complementary data for risk stratification in SCD prevention.

Conclusions:

• Refining ICD implantation indications is crucial for optimizing SCD prevention.
• Integrating myocardial imaging and genetic analysis can significantly improve patient selection for ICDs.
• These advancements promise to enhance the overall concept and effectiveness of SCD prevention strategies using ICDs.