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Related Concept Videos

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...
Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
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...
Angina II: Classification01:27

Angina II: Classification

Angina, also known as angina pectoris, is a chest pain resulting from diminished blood flow to the heart muscle and is often a symptom of coronary artery disease. Angina presents several variants with distinctive attributes, etiologies, and therapeutic approaches. The main types of angina include stable, unstable, variant (Prinzmetal's), microvascular, intractable, and silent ischemia.Stable angina is caused by atherosclerosis, which leads to the formation of plaques that narrow the coronary...
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...
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...

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Related Experiment Video

Updated: Jun 10, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
12:03

Myocardial Infarction and Functional Outcome Assessment in Pigs

Published on: April 25, 2014

Current myocardial infarction classification does not predict risks of early revascularization.

Li Zhang1, Kanwal Kumar, Brett Hiebert

  • 1Cardiac Sciences Program, St Boniface General Hospital/I.H. Asper Clinical Research Institute, Winnipeg, Manitoba, Canada.

The Annals of Thoracic Surgery
|July 30, 2010
PubMed
Summary

Surgical risks for patients with recent myocardial infarction (MI) are similar regardless of whether it is ST-elevation MI or non-ST-elevation MI. Early surgical intervention decisions should not solely rely on MI classification.

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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

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Last Updated: Jun 10, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
12:03

Myocardial Infarction and Functional Outcome Assessment in Pigs

Published on: April 25, 2014

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

Area of Science:

  • Cardiology
  • Cardiovascular Surgery
  • Interventional Cardiology

Background:

  • ST-elevation myocardial infarction (MI) is associated with higher mortality than non-ST-elevation MI after medical treatment and percutaneous coronary intervention.
  • The prognostic value of MI classification in patients undergoing surgical revascularization within 21 days of MI requires investigation.

Purpose of the Study:

  • To determine if MI classification (ST-elevation MI vs. non-ST-elevation MI) impacts outcomes after coronary artery bypass grafting (CABG) within 21 days of MI.
  • To assess the prognostic significance of MI subtype in early surgical revascularization.

Main Methods:

  • A retrospective study of 2412 patients undergoing isolated CABG within 21 days of MI between 1995 and 2007.
  • Outcomes analyzed included in-hospital mortality and major adverse events (death, MI, stroke, renal failure requiring hemodialysis).
  • Propensity score matching was used for secondary analysis.

Main Results:

  • Crude in-hospital mortality and major adverse event rates were higher in ST-elevation MI patients.
  • MI subtype (ST-elevation MI vs. non-ST-elevation MI) did not predict in-hospital mortality or major adverse events in stepwise regression analysis.
  • Propensity score matching revealed similar surgical outcomes between ST-elevation MI and non-ST-elevation MI cohorts.

Conclusions:

  • Surgical risks in patients with recent MI are independent of MI subtype.
  • Differentiating ST-elevation MI and non-ST-elevation MI has limited value for guiding early surgical intervention decisions.
  • Outcomes after early CABG are comparable between MI subtypes.