Welcome to Cardiology Today – Recorded October 29, 2025. This episode summarizes 5 key cardiology studies on topics like large hemispheric infarction and lower-extremity peripheral vascular interventions. Key takeaway: COVID-19 Vaccine Effects on High-Risk Hearts. Article Links: Article 1: Procedural Volume and Outcomes in Lower-Extremity Peripheral Vascular Interventions: Insights From the NCDR Peripheral Vascular Intervention Registry. (Journal of the American Heart Association) Article 2: Safety and Feasibility of YC-6 in Patients With Large Hemispheric Infarction: A Randomized Clinical Trial. (Journal of the American Heart Association) Article 3: Association of Pancreas Volume With Adverse Clinical Outcomes. (Journal of the American Heart Association) Article 4: Treatment Response and Survival in Methamphetamine-Associated Pulmonary Arterial Hypertension. (Journal of the American Heart Association) Article 5: COVID-19 Vaccination and Cardiovascular Outcomes in Older Adults With Coronary Artery Disease and Heart Failure: Insights From a Large Propensity-Matched Cohort Study. (Journal of the American Heart Association) Full episode page: https://podcast.explainheart.com/podcast/covid-19-vaccine-effects-on-high-risk-hearts-10-29-25/ Featured Articles Article 1: Procedural Volume and Outcomes in Lower-Extremity Peripheral Vascular Interventions: Insights From the NCDR Peripheral Vascular Intervention Registry. Journal: Journal of the American Heart Association PubMed Link: https://pubmed.ncbi.nlm.nih.gov/41147410 Summary: This study utilized the National Cardiovascular Data Registry Peripheral Vascular Intervention registry to investigate the relationship between hospital and operator procedural volume and in-hospital major adverse limb events and major adverse cardiovascular events following lower-extremity peripheral vascular interventions. It assessed data collected from April 1 2014 to December 31 2019 to better understand how provider experience influences patient safety and outcomes. This research establishes a clearer understanding of volume-outcome associations, which is crucial for standardizing care and potentially improving patient prognosis in peripheral artery disease management. Article 2: Safety and Feasibility of YC-6 in Patients With Large Hemispheric Infarction: A Randomized Clinical Trial. Journal: Journal of the American Heart Association PubMed Link: https://pubmed.ncbi.nlm.nih.gov/41147407 Summary: This randomized, double-blind, placebo-controlled, proof-of-concept clinical trial investigated the safety and preliminary feasibility of YC-6, specifically 5alpha-androst-3beta56beta-triol for injection, in patients experiencing large hemispheric infarction. The study enrolled individuals with middle cerebral artery infarction within 12 hours of symptom onset, addressing the urgent need for novel neuroprotective agents to combat malignant cerebral edema. By assessing these initial parameters, the research lays foundational groundwork for future therapeutic development, aiming to improve outcomes for a critical cause of poor prognosis in severe stroke. Article 3: Association of Pancreas Volume With Adverse Clinical Outcomes. Journal: Journal of the American Heart Association PubMed Link: https://pubmed.ncbi.nlm.nih.gov/41147404 Summary: This study investigated the association of pancreas volume with adverse clinical outcomes, recognizing that chronic diseases can reduce pancreas size and impact endocrine and exocrine function. Researchers estimated baseline age-adjusted predicted pancreas volume using abdominal magnetic resonance imaging data from 36592 U.K. Biobank participants. The analysis establishes a critical understanding of whether reduced pancreas volume serves as an indicator for heightened risk of various adverse clinical conditions. This research contributes a significant marker for potentially identifying individuals at higher risk, enabling earlier monitoring or preventive strategies. Article 4: