[Epidemiology, risk factors, and triggers of acute coronary syndromes]

Naoharu Iwai1

  • 1Department of Epidemiology, National Cardiovascular Center.

Insights

Acute myocardial infarction incidence is stable in Japan overall, but rising in the oldest age groups. Understanding plaque rupture and thrombosis is key to preventing acute coronary syndromes by recognizing risk and triggering factors.

Area of Science:

  • Cardiology
  • Geriatric Medicine
  • Epidemiology

Context:

  • Acute myocardial infarction (AMI) incidence trends vary globally.
  • The oldest age demographic presents unique challenges in cardiovascular health.
  • Plaque rupture with superimposed thrombosis is a primary mechanism in acute coronary syndromes (ACS).

Purpose:

  • To analyze trends in acute myocardial infarction incidence in Japan, particularly in the elderly.
  • To highlight the critical role of plaque rupture and thrombosis in ACS.
  • To emphasize the importance of identifying both conventional and triggering factors for ACS prevention.

Summary:

  • While overall acute myocardial infarction rates remain stable in Japan, a concerning increase is observed in the oldest age groups.
  • The pathophysiology of ACS predominantly involves plaque rupture leading to thrombosis.
  • Effective prevention strategies require a comprehensive understanding of established risk factors and acute triggering events.

Impact:

  • Informs public health strategies for cardiovascular disease prevention in aging populations.
  • Enhances clinical awareness regarding the specific risks faced by the elderly.
  • Contributes to a deeper understanding of ACS etiology for improved patient outcomes.

Related Concept Videos

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...
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
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 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 V: Nursing Management01:26

Acute Coronary Syndrome V: Nursing Management

Nursing Assessment:Nursing management of acute coronary syndrome (ACS) involves taking the patient's history, focusing on primary complaints such as chest pain, dyspnea, and excessive sweating (diaphoresis), as well as other symptoms like back or jaw pain, nausea, vomiting, palpitations, dizziness, and fatigue. The nurse also reviews the patient's history of cardiac events, risk factors such as hypertension, diabetes, smoking, family history, and current medications.In the objective assessment,...
Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...