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ACC 2026 Late-Breaking Trials
Live trial results, expert commentary, and discussion with 10+ trial authors
Does QFR-derived physiology stratify high-risk non-infarct-related arteries and guide treatment in patients with acute myocardial infarction?
Result: QFR-derived physiology, including QFR and QFR-PPG, can stratify high-risk non-IRAs and guide optimal treatment in patients with AMI.

“In AMI, combining QFR with QFR-PPG unmasked high-risk non-IRA lesions. Deferred high-risk lesions had strikingly worse 3-year outcomes, whereas PCI was associated with better prognosis in this subgroup. By Sho Nakao https://t.co/PgqtOWqqUH #circ_j #CardioX https://t.co/BGol4BwiFb”
Does the DynamX coronary bioadaptor improve clinical outcomes and restore vessel function compared to conventional drug-eluting stents in patients with coronary artery disease?
Result: The DynamX coronary bioadaptor demonstrated noninferiority to drug-eluting stents with superior late lumen preservation, reduced neointimal hyperplasia, and low target-lesion failure rates, while restoring vessel pulsatility and compliance after 6 months.

“From Caging to Uncaging With Bioadaptors: A Novel Paradigm in Coronary Revascularization | Journal of the American Heart Association https://t.co/umPCKN5822”
Do in-hospital and long-term clinical outcomes differ between acute myocardial infarction patients categorized as SCAI shock stage B versus stage A?

“As compared to SCAI shock modified stage A, modified stage B was not independently associated with in-hospital and long-term clinical outcomes in patients with acute myocardial infarction. By Hisashi Sato and Kenichi Sakakura https://t.co/hM33b1dxhl #circ_rep #CardioX https://t.co/eRcVmgFz7C”
Does non-sustained ventricular tachycardia (NSVT) predict sudden cardiac death in Japanese patients receiving ICDs for primary prevention?
This study aims to validate the prognostic significance of non-sustained ventricular tachycardia in Japanese patients receiving ICDs for primary prevention.

“A history of NSVT showed limited prognostic value for primary prevention ICD therapy. Holter-documented NSVT modestly predicted appropriate ICD therapy but was not associated with VF or mortality. By Ryobun Yasuoka https://t.co/DB7T6avwKb #circ_j #CardioX https://t.co/JJIixfQYXM”
Result: Key gaps in GDMT scores include heterogeneous weighting of drug classes and doses, minimal incorporation of intolerance to identify maximum-tolerated therapy, and heterogeneous incorporation of therapies beyond quadruple therapy.

“Heart Failure Guideline-Directed Medical Therapy Scoring Systems: A Scoping Review Multiple, disparate scores have been developed to quantify heart failure with reduced ejection fraction GDMT optimization, undermining the original intent. Key gaps in scores include heterogeneous https://t.co/mmJrpNC96G”
Does pedicled internal mammary artery harvesting improve vasorelaxation and clinical outcomes compared to skeletonized harvesting in patients undergoing CABG?
Result: Preservation of perivascular adipose tissue definitively preserves vasorelaxation properties of the IMA, and clinical studies suggest skeletonized harvesting is associated with a higher rate of graft occlusion and worse clinical outcomes than the pedicled technique.
Result: Mycn reactivates the cardiomyocyte cell cycle and promotes cardioprotection following ischemic injury, likely via induction of a neonatal-like transcriptional program.
Result: Rapid progression occurred in 7.8% of patients with aortic sclerosis, 16.4% with mild AS and 29.8% with moderate AS.
Do temporal trends in mortality and treatment initiation for new-onset heart failure differ across vulnerable populations compared to their non-vulnerable counterparts?
Result: Overall mortality risk declined over the past 2 decades, but 4 out of 8 vulnerable groups experienced a lesser decline than their counterparts, and 6 vulnerable groups still had worse outcomes at the end of the study period.
Does a multifaceted, team-based implementation strategy reduce systolic blood pressure in low-income patients with hypertension?
Result: A multifaceted, team-based implementation strategy resulted in a significantly greater reduction in systolic blood pressure than enhanced usual care.

“Original Article: Multifaceted Strategies for Hypertension Control in Low-Income Patients (IMPACTS-BP trial) https://t.co/AxUONCq718 Editorial: Systems-Based Success for Hypertension https://t.co/4BkINWpImo #Cardiology https://t.co/AXDHJVmxfl”
Hypertension is a major public health priority due to its high prevalence and associated morbidity and mortality. Low-income populations experience higher prevalence and lower control rates, which [contribute] to health disparities.