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Related Concept Videos

Coronary Circulation01:21

Coronary Circulation

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The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
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Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

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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...
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Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

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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...
443
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

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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...
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Acute Coronary Syndrome V: Nursing Management01:26

Acute Coronary Syndrome V: Nursing Management

325
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,...
325
Coronary Artery Disease V: Interprofessional Care01:27

Coronary Artery Disease V: Interprofessional Care

267
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...
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Related Experiment Video

Updated: Jan 31, 2026

A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
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A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis

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[Coronary restenosis].

R J Zotz1, U Dietz2, S Lindemann3

  • 1Marienhaus Klinikum Eifel, Krankenhausstr. 1, 54634, Bitburg, Deutschland. rainer.zotz@marienhaus.de.

Herz
|December 21, 2018
PubMed
Summary
This summary is machine-generated.

Coronary restenosis, the re-narrowing of arteries after procedures like stenting, is reduced by drug-eluting stents (DES) and drug-coated balloons (DCB). Latest generation DES and DCB offer the best outcomes for in-stent restenosis.

Keywords:
AngioplastyBare-metal stentsDrug-eluting stentsEndotheliumNeoatherosclerosis

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Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Biomaterials Science

Background:

  • Coronary restenosis is a significant complication following arterial interventions, occurring due to the arterial wall's response to mechanical injury.
  • It affects approximately 30% of bare-metal stent procedures and 10% of drug-eluting stent procedures.
  • The process involves inflammation, cellular proliferation, and extracellular matrix remodeling.

Purpose of the Study:

  • To review the mechanisms, risk factors, and therapeutic strategies for coronary restenosis.
  • To evaluate the efficacy of different stent types and drug-coated balloons in preventing restenosis.
  • To provide guidance on optimal stent selection for interventional cardiology.

Main Methods:

  • Literature review and analysis of randomized trials focusing on coronary restenosis.
  • Comparison of clinical and angiographic outcomes for bare-metal stents, early-generation drug-eluting stents, latest-generation drug-eluting stents, and drug-coated balloons.
  • Examination of the pathophysiology and risk factors associated with restenosis.

Main Results:

  • Drug-eluting stents (DES) and drug-coated balloons (DCB) significantly reduce restenosis rates compared to bare-metal stents (BM).
  • Latest-generation DES and DCB demonstrate superior clinical and angiographic results for in-stent restenosis.
  • Certain medications used in DES, such as rapamycin and paclitaxel, inhibit cell division and influence restenosis outcomes.

Conclusions:

  • Latest-generation DES and DCB are recommended for managing coronary restenosis, while BM and first-generation DES should be avoided.
  • The mechanism of restenosis with DES can be heterogeneous, involving inflammatory components like T-lymphocytes.
  • Further randomized studies are necessary to fully elucidate the role of DES in neoatherosclerosis and optimize treatment strategies.