The practice can be made fully integrated via Ethereum blockchain smart

The practice can be made fully integrated via

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step-by-step, streamlined workflow. The practice can be made fully integrated via Ethereum blockchain smart contracts EHR Surgical Workflow system. This allows administrators, billing, front desk and other tasks to complete tasks to support the workflow from pre-operative patient management to post-operative patient management. The details are then inserted seamlessly into the prior surgical record of the patient. Through the smart contract features it would be possible to record patient consent and initial assessment of the patient. Our workflow consists of various activities that are involved throughout the surgical patient process. This includes pre-approvals, medical clearance, surgery scheduling, pre-operative testing and recording consent. Throughout the process, the visit is recorded, treatment is reported and paid. This would be useful to review past surgical cases or surgeries that have been canceled. Algorithmic workflow and the solidity smart contract components can be seen in Figure 8 and Figure 9 respectively. Figure 8. Algorithmic workflow for a smart contract with surgery patients. Figure 8. Algorithmic workflow for a smart contract with surgery patients.
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Electronics 2020 , 9 , 94 14 of 23 Electronics 2020 , 9 , x FOR PEER REVIEW 14 of 23 Figure 9. Contract surgery. 6. Cost Estimation Method In terms of deploying medical blockchain, there is a need to make estimation of the cost associated with deploying healthcare smart contracts. The ultimate goal is to propose a system which can give a feasible medical health system with all the benefits of blockchain. All programmable calculations in Ethereum blockchian cost some fees to avoid the abuse of network and overcome other computational related issues. The fee in Ethereum blockchain is specified as gas to run all sort of transactions. Gas refers to the payment or price value required for a successful transaction or execution of a contract on the Ethereum blockchain platform. The exact price of gas is determined by the network miners who may refuse to process a transaction if their limit is not met by the gas price. Hence all the operations, computations, message call, creation/deployment of smart contracts and storage on Ethereum vitual machine (EVM) needs gas to perform all these tasks. If someone wants to do any sort of operation on EVM, they must have specific amount of gas in their account to execute transactions on Ethereum virtual machine. There is a gas limit for every transactions, so if there is any unused gas it will return to the user account after the execution of transactions. If a user doesn’t have valid balance account, he can’t carry on any kind of operation and hence considered as invalid transaction. In EVM Ethers are used to purchase gas and the users who are running the transactions can set their account gas limit for the specific transaction. But again it’s on the miner if they tend to approve the transaction or not. If a sender chooses higher gas price, it will cost them high price to pay for the gas and miners will get great value for the transactions. A miner then executes the computation in order to add this transaction to a block. After the successful execution of transactions,
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