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Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

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Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
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Related Experiment Video

Updated: Sep 9, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Biomarker-Based ABC-AF Risk Scores for Personalized Treatment to Reduce Stroke or Death in Atrial Fibrillation: A

Jonas Oldgren1,2, Ziad Hijazi2, Håkan Arheden3,4

  • 1Uppsala Clinical Research Center (J.O., H.R., L.W.), Uppsala University, Uppsala, Sweden.

Circulation
|August 30, 2025
PubMed
Summary

A new treatment strategy using ABC-AF risk scores for atrial fibrillation (AF) patients did not improve long-term outcomes compared to standard care. This highlights the need for further prospective studies before implementing new risk stratification tools.

Keywords:
atrial fibrillationbiomarkersintracranial hemorrhagesrisk factorsstroke

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Area of Science:

  • Cardiology
  • Clinical Trials
  • Risk Stratification

Background:

  • Clinical utility of risk scores for guiding treatment and improving outcomes in atrial fibrillation (AF) is under-evaluated prospectively.
  • Biomarker-based risk scores may offer personalized treatment strategies.
  • Need for evidence on risk-guided precision medicine in AF management.

Purpose of the Study:

  • To evaluate if an ABC-AF risk score-guided multidimensional treatment strategy improves long-term outcomes in AF patients.
  • To assess the impact of tailored treatment recommendations based on individual stroke and bleeding risks.
  • To compare outcomes between a risk-informed treatment approach and usual care.

Main Methods:

  • Multicenter, registry-based, randomized, controlled, open-label study in adult AF patients.
  • Active arm: Investigators used ABC-AF scores for treatment decisions, including oral anticoagulant (OAC) choice.
  • Control arm: Patient management followed investigator discretion; primary outcome was stroke or death.

Main Results:

  • Study prematurely terminated due to safety concerns, leading to underpowered primary objective.
  • No significant difference in primary outcome (stroke or death) between active (3.18/100PY) and control (2.67/100PY) arms (HR 1.19; p=0.12).
  • Similar rates for secondary outcomes including major bleeding, stroke, death, and composite events between groups.

Conclusions:

  • The ABC-AF risk score-guided multidimensional treatment strategy did not demonstrate improved clinical outcomes versus usual care in AF patients.
  • Results underscore the necessity for prospective validation of risk stratification tools and precision medicine before routine clinical implementation.
  • Further research is needed to confirm the utility of novel risk assessment tools in diverse clinical settings.