A Comprehensive Review of Blockchain based Secure EHR: Addressing Challenges and Unlocking Opportunities in Healthcare Data Management

In the rapidly evolving landscape of healthcare, the secure sharing of Electronic Health Records (EHRs) has become a critical component that has garnered significant attention due to concerns regarding security. Furthermore, the recent adoption of blockchain for EHRs has shown potential in enhancing secure sharing. This review work delves into the realm of blockchain-based EHRs, focusing on addressing challenges and opportunities. The main objective of this review paper is to address the challenges while unlocking the opportunities presented by blockchain technologies in designing secure and efficient EHR sharing models. Moreover, this review systematically analyzes existing literature and adoption trends, providing a critical analysis of their implications. The article identifies key challenges such as privacy preservation, data security, and interoperability, and discusses the existing solutions aimed at mitigating these issues. Furthermore, the review primarily concentrates on highlighting the role of blockchain technology in mitigating data breaches, managing patient consent, and facilitating data exchange among stakeholders. Finally, it addresses the research gap in the context of Blockchain-EHR and outlines potential future directions for EHR research. This review paper offers valuable insights into the integration of blockchain technology with EHRs, showcasing its potential benefits and challenges, and providing a foundation for further research in this rapidly evolving field.