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Related Concept Videos

Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

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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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Cardiac Catheterization IV: Nursing Management01:26

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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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Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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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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Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

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Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
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Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

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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...
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Related Experiment Video

Updated: May 1, 2026

Postconditioning with Lactate-enriched Blood for Cardioprotection in ST-segment Elevation Myocardial Infarction
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Code Stroke Activation Following Cardiac Catheterization Procedures: Contrast-Induced Encephalopathy Versus Stroke.

Sotirios Dardas1,2, Luciano Sposato1,3,4, Diana Ayan4

  • 1London Health Sciences Centre, London, Ontario, Canada.

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions
|April 30, 2026
PubMed
Summary
This summary is machine-generated.

Contrast-induced encephalopathy (CIE) is a rare complication after cardiac catheterization, mimicking stroke. This study found a 0.006% incidence, with patients experiencing rapid symptom resolution.

Keywords:
cardiac catheterization procedurescontrast‐induced encephalopathyiodinated contrast neurotoxicitypost‐angiography complicationsstroke mimics

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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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Area of Science:

  • Neurology
  • Cardiology
  • Radiology

Background:

  • Contrast-induced encephalopathy (CIE) is a rare complication of iodinated contrast media administration.
  • CIE often presents with symptoms mimicking acute ischemic stroke (IS).
  • The incidence of CIE following cardiac catheterization is not well-defined.

Purpose of the Study:

  • To determine the incidence of CIE after cardiac catheterization.
  • To characterize the clinical presentation, diagnostic features, and outcomes of CIE.
  • To identify risk factors and propose management strategies for CIE.

Main Methods:

  • A single-center retrospective cohort study of code stroke activations from January 2016 to December 2022.
  • Reviewed 16 cases post-cardiac catheterization for CIE based on clinical, neuroimaging, and exclusion criteria.
  • Diagnosis adjudicated by a stroke neurologist.

Main Results:

  • Identified 2 cases of probable CIE among 34,760 coronary procedures, yielding an incidence of 0.006%.
  • Both affected patients were elderly with hypertension, receiving <100 mL of contrast.
  • Symptoms resolved completely within 24-48 hours with conservative management.

Conclusions:

  • CIE is a rare but challenging diagnosis post-cardiac catheterization due to stroke-like symptoms.
  • Hypertension and contrast volume are potential risk factors; early recognition and conservative management are key.
  • Interdisciplinary awareness and integrated protocols can prevent misdiagnosis and inappropriate interventions, with CIE generally having an excellent prognosis.