Explainable Artificial Intelligence for Trustworthy Clinical Decision Support Systems
The increasing integration of Artificial Intelligence (AI) into healthcare has transformed Clinical Decision Support Systems (CDSS) from rule-based advisory platforms into intelligent systems capable of diagnosing diseases, predicting clinical outcomes, recommending treatments, and optimizing healthcare workflows. Despite remarkable improvements in predictive performance through deep learning, ensemble learning, and generative artificial intelligence, the widespread clinical adoption of AI remains constrained by the limited transparency of complex machine learning models. Most high-performing AI algorithms function as "black-box" systems, providing highly accurate predictions while offering minimal explanation regarding the reasoning behind clinical recommendations. This lack of interpretability raises significant concerns regarding physician trust, patient safety, accountability, regulatory compliance, and ethical responsibility. Explainable Artificial Intelligence (XAI) has consequently emerged as a fundamental research direction aimed at improving transparency without substantially compromising predictive performance. This review critically examines the role of Explainable Artificial Intelligence in developing trustworthy Clinical Decision Support Systems by synthesizing recent advances in artificial intelligence architectures, trustworthy computing principles, healthcare automation, cloud intelligence, workflow optimization, cybersecurity, and distributed system reliability. The review develops a comprehensive conceptual framework integrating explainability, clinical validation, fairness, privacy preservation, workflow automation, and governance into a unified trust model for intelligent healthcare environments. Existing research demonstrates that explainability improves physician confidence, facilitates regulatory acceptance, enhances diagnostic validation, and enables collaborative human-AI decision making. Simultaneously, emerging technologies including federated learning, digital twins, cloud intelligence, workflow automation, and real-time monitoring significantly strengthen scalability and operational resilience within healthcare infrastructures.