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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.
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Coronary Artery Disease I: Introduction01:30

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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...
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Acute Coronary Syndrome I: Introduction01:30

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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

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

Coronary Artery Disease V: Interprofessional Care

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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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Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration
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Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration

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Nitroglycerin application and coronary arteriogenesis.

Nora Gatzke1,2,3, Philipp Hillmeister1,2,3, André Dülsner2,3

  • 1Department for Angiology, Brandenburg Medical School, Campus Brandenburg/Havel, Brandenburg/Havel, Germany.

Plos One
|August 18, 2018
PubMed
Summary
This summary is machine-generated.

Short-acting nitroglycerin (NTG) promotes coronary collateral development, reducing infarct size in a rat model. This finding is crucial for developing new treatments for vascular diseases.

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Area of Science:

  • Cardiovascular Research
  • Vascular Biology
  • Pharmacology

Background:

  • Arteriogenesis, the development of collateral arteries, is vital for blood flow restoration during coronary occlusion.
  • Nitric oxide (NO) plays a critical role in the complex process of arteriogenesis.
  • Understanding NO's role can lead to new therapeutic strategies for occlusive vascular diseases.

Purpose of the Study:

  • To investigate the impact of supplemental nitric oxide (NO) donors on collateral artery growth in a rat model.
  • To evaluate the efficacy of short-acting nitroglycerin (NTG) and slow-release isosorbide dinitrate (ISDN) in promoting arteriogenesis.
  • To assess if NTG can counteract the anti-arteriogenic effects of acetylsalicylic acid (ASA).

Main Methods:

  • A repetitive coronary artery occlusion protocol (ROP) was used to induce collateral growth in rats.
  • Infarct size and ST-segment elevation were measured as primary endpoints after induced myocardial infarction.
  • Rats received NTG or ISDN during the ROP, with additional studies on NTG and ASA co-administration.

Main Results:

  • Repetitive occlusion protocol (ROP) for 10 days significantly reduced infarct damage, indicating enhanced arteriogenesis.
  • Intermittent nitroglycerin (NTG) administration markedly decreased ST-elevation and infarct size.
  • Isosorbide dinitrate (ISDN) showed a positive effect on arteriogenesis, though less pronounced than NTG. Acetylsalicylic acid (ASA) worsened infarct severity, but NTG partially mitigated this.

Conclusions:

  • Intermittent NTG treatment effectively reduces experimentally induced myocardial infarct size by enhancing coronary collateral development.
  • These findings offer significant insights for future clinical strategies targeting occlusive vascular diseases.
  • Nitric oxide donation represents a promising therapeutic avenue for promoting arteriogenesis and mitigating ischemic damage.