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Asrar Ahmed

As seen in: heart, European Heart Journal - Cardiovascular Imaging, International Journal of Cardiology, Pakistan Armed Forces Medical Journal, IUP Journal of Corporate Governance, Blockchain in Healthcare Today

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Articles

Lightweight Privacy-Preserving Blockchain Framework for Healthcare: A Simulation-Based Approach to Reducing Computational Overhead

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By Asrar Ahmed, Mousmi Ajay Chaurasia, S. Nallusamy
| Blockchain in Healthcare Today Verified
Abstract Background: The privacy and security of electronic health records (HER) in blockchain-based systems remains a major research problem because of high computational overhead and scalability restrictions. Privacy-preserving techniques such as encryption and zero-knowledge proofs strengthen blockchain’s transparency and immutability but often add significant latency and resource use.
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Cost-effectiveness of a management strategy based on exercise echocardiography versus exercise electrocardiography in patients presenting with suspected angina during long term follow up: A randomized study

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By Sothinathan Gurunathan, Asrar Ahmed, Kostas Zacharias, Mohammed Akhtar
| International Journal of Cardiology Verified
To view the full text, please login as a subscribed user or purchase a subscription. Click here to view the full text on ScienceDirect. FiguresFig. 1Study flow diagram.Fig.
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The clinical efficacy and long-term prognostic value of stress echocardiography in octogenarians

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By Sothinathan Gurunathan, Asrar Ahmed, Jatinder Pabla, Nikos Karogiannis
| heart Verified
Introduction Although stress echocardiography (SE) is invaluable in younger populations, its prognostic value may be attenuated in the elderly due to shorter life expectancy and the frequent presence of severe comorbidities. This study sought to evaluate the clinical effectiveness of SE in octogenarians, particularly its prognostic value over clinical variables, in predicting hard events. Results Of the 374 tests, 360 (96.3%) were diagnostic.
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