This essay examines the critical role of effective communication strategies in maintaining patient safety within healthcare settings. It presents a case study of a cardiac patient where communication errors led to medication errors, specifically involving potassium dosage. The essay identifies risk factors using the Patient-Safe Transformational Model of Communication, highlighting issues such as illegible handwriting and inadequate patient handover. It then proposes nursing interventions to improve communication, including electronic documentation, standardized handover techniques like SBAR, and electronic medication reconciliation to reduce errors and enhance patient safety. The discussion emphasizes the importance of clear communication between healthcare providers and patients to create a safe and healthy environment, concluding that effective communication models and tools are essential for minimizing medical errors and improving patient outcomes.