Blockchain technology has a key role in electronic health record systems for
storing, accessing and securing patients’ medical records. Patients’ medical information
is being stored like personal bio, diagnosis, treatments, etc. This information is very
sensitive and private, and it has remained a big challenge to access and secure patient
medical records in a decentralized manner. Blockchain has become very important for
its use in storing, accessing and managing patient medical records in a very secure and
decentralized manner. In this paper, a systematic literature review has been done to
review blockchain architecture for electronic health records systems to store, access
and secure patient medical records. The main objective of this paper is to highlight the
use of blockchain in accessing and securing patient medical records. Moreover, some
blockchain-based electronic health records systems have been presented to secure the
records. Lastly, some challenges and gaps in using blockchain-based medical health
records systems have been presented.
Keywords: Block Chain, Centralized, Electronic health records, Framework, Patient medical records, Technology.
