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Background: The cardiac etiology of acute ischemic stroke (AIS) plays an important role in young adults; therefore, complete cardiac workups and subsequent prevention methods are important for treating young AIS patients. However, the definition of a young age for AIS patients could be below 45 years old, while in some previous studies, it has been below 55 years old. It remains unclear whether cardiac workups are equally important for AIS patients in the young (the age of 20–45 years old) and middle-aged (46–55 years old) categories. Materials and methods: This prospective study included 103 patients admitted due to a first AIS attack younger than 55 years old during the period from 1 October 2018 to 31 December 2020. All the patients received cardiologist consultations and cardiac workups accordingly. The characteristics of patients, cardiac workups, clinical findings, and management were analyzed. Results: AIS patients in the 46–55-year-old group had a higher prevalence of hypertension (61.4% vs. 39.0%), diabetes mellitus (27.3% vs. 15.3%), a previous history of coronary artery disease (9.1% vs. 1.7%), and atrial fibrillation (9.1% vs. 1.7%) compared to the 20–45-year-old group. After cardiologist consultations, a higher prevalence of newly diagnosed coronary artery disease (6.8% vs. 1.7%) and congestive heart failure (11.4% vs. 1.7%) was noted. Both groups disclosed similar percentages of patent foramen ovale (PFO) (27.3% vs. 22.0%) and valvular disease. These results led to subsequent changes in treatment in both groups. The 20–45-year-old group had higher percentages of receiving PFO occluders (11.9%) compared to the 46–55-year-old group (6.8%). Conclusion: Cardiologist consultations with thorough cardiac workups for AIS patients can reveal many cardiac findings in both young and middle-aged patients. This leads to a subsequent change in treatment, including medical and surgical aspects, which are important as secondary prevention for AIS.

Differences in Cardiac Etiologies for Ischemic Stroke in Young and Middle-Aged Patients: A Single-Center Experience in Taiwan