Acute coronary syndrome: insight from angioscopy
Yasunori Ueda1, Nobuyuki Ogasawara, Koushi Matsuo
1Cardiovascular Division, Osaka Police Hospital, Japan. ueda@oph.gr.jp
Summary
Predicting acute coronary syndrome (ACS) remains challenging. While vulnerable plaques like thin-cap fibroatheroma (TCFA) are implicated, "vulnerable blood" with high thrombogenic potential may be a key determinant in ACS onset.
Area of Science:
- Cardiology
- Vascular Biology
- Biomedical Engineering
Background:
- The concept of vulnerable plaque, particularly thin-cap fibroatheroma (TCFA), is recognized in acute coronary syndrome (ACS) pathogenesis.
- Clinical detection of TCFA has not effectively predicted ACS onset, suggesting other factors are involved.
- Silent plaque ruptures are frequently observed, indicating that plaque rupture alone may not be sufficient for ACS development.
Purpose of the Study:
- To explore the hypothesis that
Main Methods:
- Angioscopic evaluation of coronary arteries.
- Assessment of blood thrombogenicity.
- Correlation analysis between angioscopic findings, blood characteristics, and ACS events.
Main Results:
- Identification of angioscopic markers associated with plaque rupture.
- Quantification of blood thrombotic potential in ACS patients.
- Demonstration of a link between "vulnerable blood" and ACS occurrence.
Conclusions:
- Plaque rupture alone is insufficient for ACS; blood thrombogenicity plays a critical role.
- "Vulnerable blood" is a significant determinant in the onset of ACS.
- Angioscopy offers insights into the interplay between plaque morphology and blood "vulnerability" in ACS.
Related Concept Videos
01:30Acute 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...
01:30Acute 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...
01:19Acute 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...
01:29Angina III: Clinical Manifestations and Assessment
Angina manifests as chest pain, tightness, or squeezing discomfort typically located behind the breastbone. It can radiate to the neck, jaw, shoulders, and inner aspects of the upper arms, most commonly the left arm. Patients may experience shortness of breath, fatigue, profuse sweating, dizziness, indigestion, heartburn, palpitations, anxiety, and vomiting as accompanying symptoms. This pain often lasts a few minutes and is triggered by physical exertion, emotional stress, heavy meals, or cold...
01:26Acute 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,...
01:28Acute 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...