Frequency of stent thrombosis after acute coronary syndromes (from the SYMPHONY and 2nd SYMPHONY trials)

Thaddeus R Tolleson1, L Kristin Newby, Robert A Harrington

  • 1Duke Clinical Research Institute, Durham, North Carolina, USA.

Insights

Stent thrombosis occurred more frequently in acute coronary syndrome patients receiving coronary stents compared to those undergoing elective procedures. This finding highlights potential risks in typical clinical practice for ACS patients. Keywords: stent thrombosis, acute coronary syndrome, coronary stent.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Clinical Trials

Background:

  • Stent thrombosis is a serious complication following coronary stent implantation.
  • Understanding thrombosis rates in acute coronary syndromes (ACS) is crucial for patient management.
  • Previous studies may not fully represent real-world ACS patient populations undergoing stenting.

Purpose of the Study:

  • To investigate the incidence of stent thrombosis in patients with acute coronary syndromes (ACS) treated with coronary stents.
  • To compare stent thrombosis rates in ACS patients with historical data from elective percutaneous coronary intervention (PCI).

Main Methods:

  • Analysis of data from 4,607 patients with ACS who received coronary stents.
  • Inclusion of patients from two clinical trials comparing aspirin versus sibrafiban for secondary prevention.
  • Outcomes assessed included the occurrence of stent thrombosis.

Main Results:

  • Stent thrombosis was observed more frequently in this ACS patient cohort than previously reported in elective PCI patients.
  • The study population's characteristics and outcomes are considered more representative of typical ACS patients undergoing stenting in clinical practice.

Conclusions:

  • Patients with acute coronary syndromes undergoing coronary stenting may experience higher rates of stent thrombosis.
  • Findings suggest a need for careful consideration of antithrombotic strategies in this high-risk population.
  • This study provides valuable insights into real-world outcomes for ACS patients receiving coronary stents.

Related Concept Videos

Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

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...
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
Acute Coronary Syndrome IV: Interprofessional Care01:28

Acute Coronary Syndrome IV: Interprofessional Care

IntroductionThe management of Acute Coronary Syndrome (ACS) aims to minimize myocardial damage, preserve myocardial function, and prevent complications.Initial ManagementInpatient management involves continuous cardiac monitoring, preferably in an ICU, focusing on blood pressure, serum sodium, potassium, and creatinine levels, and urine output. Ongoing pharmacologic management is crucial for stabilizing the patient.Supplemental Oxygen: Administer supplemental oxygen if oxygen saturation is...
Coronary Artery Disease V: Interprofessional Care01:27

Coronary Artery Disease V: Interprofessional Care

Interprofessional care for coronary artery disease includes pharmacological therapy and revascularization procedures.Pharmacological therapy for Coronary Artery Disease (CAD) aims to manage symptoms, prevent complications, and improve patient outcomes through various classes of medications:Antiplatelet Agents:Aspirin and Clopidogrel: These medications inhibit platelet aggregation, preventing blood clots, which is crucial for avoiding heart attacks and strokes. Doctors often prescribe these...
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...