Remote Patient Monitoring with Blockchain: Powerful and Flexible Patient Observation System

Blockchain is a technique that has the potential to revolutionize healthcare monitoring by stabilizing the shielded way for medical organizations and securing it through a decentralized P2P network. In an attempt to preserve and clarify the interpretation of this cutting-edge patient monitoring (PM) technology. During the COVID-19 pandemic, the illness reaches its highest prevalence. As the internet of things (IoT) continues to expand, individuals adopted medical sensors for health monitoring. The immense amount of medical information created by these sensors must be gathered and sent securely to take the necessary measures for patients in critical situations. In addition, the particular details of users must be kept confidential, and fitness data must be managed securely. For the removal of counterfeited activities, the possession data of internet-connected devices must be preserved electronically. The emerging blockchain technology is decentralized with a clarity system that provides a secure, immutable transaction record. Diverse researchers have created a healthcare system using smart contracts on the blockchain that facilitates the enrollment of patients and doctors in a health center; hence, enhancing user participation in PM. This device watches distant patients and generates alerts in case of an emergency. This technology also consists of a legal and safe method of using medical sensors by utilizing smart contracts for device authorization. The patient’s fitness details are examined, and timely notifications are sent to patients, health practitioners, and health centers. Blood pressure, temperature, blood oxygen, and brain inflammation monitoring are being used for patients’ health monitoring. In addition, for PM, the health contract caller handles information received from the smart device. The primary PM or health contract caller generates a separate contract for each device from which it receives data. The primary contract functions as a container that organizes and establishes connections between all PM devices and subcontracts. Authorized physicians will have access to patient information and will be able to modify monitoring criteria. For instance, if a smart device gets blood pressure data from a patient’s body sensor, the data will be delivered to the health contract caller, and then the blood pressure monitor function will be invoked for PM. The device will provide minimum and maximum blood pressure data to this method, which will then generate an object. The blood pressure monitor will next transmit these numbers to its analysis function to examine the obtained data. Subcontracts produce responses to incoming data rather than controlling it under the primary contract. If the analyze function returns a result other than zero (0) or “OK,” an alarm (such as high/low blood pressure) is sent to the patient, physician, and health center for treatment. By using blockchain technology in healthcare settings, forgeries and privacy breaches are decreased, consequently boosting public confidence in the blockchain. This technique will also assist the hospitals in better understanding the reputations held by the individual physicians. It is planned to create a prescription review system shortly so that people will be able to provide feedback on their doctors’ prescriptions. This chapter intends to incorporate the benefits of blockchain technology into the PM system by developing a secure blockchain-based system.