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Acute Coronary Syndrome I: Introduction01:30

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

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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...
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Myocarditis I: Introduction01:21

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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Cardiac Catheterization I: Pre-Procedure Overview01:28

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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
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Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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Minimal Invasive Surgical Procedure of Inducing Myocardial Infarction in Mice
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Periprocedural Myocardial Infarction: Do We Need an Updated Definition?

Marcello Casuso Alvarez1,2, Leonardo Luca Bavuso1,2, Michele Di Leo1,2

  • 1Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy.

Journal of Cardiovascular Development and Disease
|March 27, 2026
PubMed
Summary
This summary is machine-generated.

Defining periprocedural myocardial infarction (MI) after percutaneous coronary intervention (PCI) is challenging. This review compares current definitions and suggests improvements for accurate MI diagnosis in PCI patients.

Keywords:
Universal Definition of Myocardial Infarctionhigh-sensitivity cardiac troponinpercutaneous coronary interventionperiprocedural myocardial infarctionperiprocedural myocardial injurytype 4a myocardial infarction

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Area of Science:

  • Cardiology
  • Biomarkers
  • Interventional Cardiology

Background:

  • Periprocedural myocardial infarction (MI) after percutaneous coronary intervention (PCI) is debated.
  • High-sensitivity cardiac troponin assays frequently detect biomarker rises without significant ischemia.

Purpose of the Study:

  • Critically examine current frameworks for defining periprocedural MI.
  • Compare biomarker thresholds, ischemia evidence, and procedural criteria.
  • Identify limitations and propose future directions for definition harmonization.

Main Methods:

  • Review of contemporary definitions: Fourth Universal Definition of Myocardial Infarction (UDMI), Academic Research Consortium (ARC)-2, and Society for Cardiovascular Angiography and Interventions (SCAI).
  • Analysis of pathophysiologic mechanisms of myocardial injury during PCI.
  • Evaluation of limitations in current diagnostic criteria.

Main Results:

  • Differences in definitions impact reported event rates and study heterogeneity.
  • Mechanisms include side-branch compromise, embolization, microvascular dysfunction, and mechanical complications.
  • Limitations include assay variability, inconsistent timing, unreliable ancillary criteria, and weak biomarker-outcome correlation.

Conclusions:

  • Current definitions for periprocedural MI after PCI have significant limitations.
  • Harmonizing biomarker thresholds and emphasizing relative biomarker dynamics are crucial.
  • Integrating biomarkers with objective ischemic evidence will improve diagnostic specificity and clinical relevance.