Delirium is a well-known, yet often overlooked, clinical syndrome described as an acute cognitive decline with fluctuating mental status, inattentiveness, and disturbance of consciousness [ ]. Delirium poses not only diagnostic and management challenges but also significantly affects clinical outcomes [ ]. Given these challenges, there has been a concerted effort to identify delirium while also investigating how to best manage and even prevent delirium. This has been best studied in the intensive care unit (ICU) and postoperative and hospice settings. However, the effect delirium has on outcomes after percutaneous coronary intervention (PCI) in the modern era is not fully understood. Park et al. sought to establish the contemporary prevalence of delirium among older adults undergoing PCI and the impact delirium has on in-hospital complications in this unique patient population [ ].