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Related Concept Videos

Coronary Artery Disease V: Interprofessional Care01:27

Coronary Artery Disease V: Interprofessional Care

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...
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
Coronary Circulation01:21

Coronary Circulation

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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Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

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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Cardiac Catheterization IV: Nursing Management

Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...

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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
10:28

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function

Published on: March 15, 2022

Peri-interventional coronary vasomotion.

Luisa Gregorini1, Jean Marco, Gerd Heusch

  • 1Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Via Parea 4, Milan, Italy. Luisa.Gregorini@fastwebnet.it

Journal of Molecular and Cellular Cardiology
|October 6, 2011
PubMed
Summary
This summary is machine-generated.

Alpha-1 blockade effectively counteracts vasoconstriction after percutaneous coronary intervention (PCI), improving coronary blood flow and left ventricular function in patients with coronary atherosclerosis.

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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
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05:58

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Published on: February 3, 2021

Area of Science:

  • Cardiology
  • Vascular Biology
  • Pharmacology

Background:

  • Percutaneous coronary intervention (PCI) can trigger ischemia-reperfusion injury due to compromised coronary vasomotor function.
  • Severe coronary atherosclerosis impairs endothelial and autoregulatory vasodilation, exacerbating vasoconstriction post-PCI.

Purpose of the Study:

  • To investigate the efficacy of intracoronary alpha-blockade in counteracting post-PCI vasoconstriction.
  • To evaluate the impact of selective alpha(1)- and alpha(2)-blockade on coronary hemodynamics and left ventricular (LV) function.

Main Methods:

  • Intracoronary administration of non-selective (phentolamine), selective alpha(1) (urapidil), and selective alpha(2) (yohimbine) blockade.
  • Assessment of coronary vasoconstriction, coronary vascular resistance, coronary flow reserve, and LV function in patients undergoing PCI.

Main Results:

  • Alpha(1)-blockade with urapidil dilated epicardial arteries, enhanced coronary flow reserve, and improved LV function.
  • Non-selective alpha-blockade with phentolamine caused epicardial and microvascular dilation.
  • Selective alpha(2)-blockade showed minimal vasodilator and functional effects; alpha-blockade attenuated the no-reflow phenomenon.

Conclusions:

  • Intracoronary alpha(1)-blockade is a promising strategy to mitigate post-PCI vasoconstriction and improve outcomes.
  • Alpha-blockade effectively addresses diffuse coronary vasoconstriction, including non-culprit lesions, and reduces the no-reflow phenomenon.