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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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Peripheral Artery Disease (PAD) is characterized by narrowed arteries that diminish blood flow to the extremities. Effective management of PAD requires an interprofessional approach involving various healthcare professionals. The critical aspects of interprofessional care for PAD patients focus on risk factor modification, drug therapy, exercise therapy, nutrition therapy, critical limb ischemia care, and interventional radiology and surgical procedures.The primary treatment goal for PAD...
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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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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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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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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
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Intravascular Ultrasound-Guided or Angiography-Guided Complex High-Risk PCI.

Roberto Diletti1, Joost Daemen1, Benjamin Faurie2

  • 1Department of Cardiology, Thoraxcenter, Erasmus University Medical Center, Rotterdam, the Netherlands.

The New England Journal of Medicine
|March 30, 2026
PubMed
Summary
This summary is machine-generated.

Routine intravascular ultrasound (IVUS) guidance did not lower target-vessel failure in complex percutaneous coronary intervention (PCI) compared to angiography alone. This study found similar adverse event rates between IVUS-guided and angiography-guided PCI strategies.

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Medical Imaging

Background:

  • Intravascular ultrasound (IVUS) guidance in percutaneous coronary intervention (PCI) is linked to better stent optimization and fewer adverse events in complex coronary lesions.
  • Despite guidelines recommending intracoronary imaging for complex lesions, its adoption in Western countries and current European practice is limited.
  • Evidence on the effectiveness of IVUS-guided PCI in complex cases within European practice is scarce.

Purpose of the Study:

  • To evaluate the efficacy of routine intravascular ultrasound (IVUS) guidance compared to angiography alone in patients undergoing complex percutaneous coronary intervention (PCI).
  • To determine if IVUS-guided PCI, using prespecified stent-optimization criteria, reduces target-vessel failure compared to standard angiography-guided PCI.
  • To assess procedural complications and overall adverse event rates between the two PCI guidance strategies.

Main Methods:

  • An investigator-initiated, international, open-label, randomized controlled trial involving 2020 patients undergoing complex PCI.
  • Patients were randomized to either IVUS-guided PCI or angiography-guided PCI.
  • The primary endpoint was target-vessel failure, a composite of cardiac death, target-vessel myocardial infarction, or clinically indicated target-vessel revascularization, assessed at a median follow-up of 19.0 months.

Main Results:

  • Target-vessel failure occurred in 13.9% of the IVUS-guided PCI group and 11.1% of the angiography-guided PCI group (HR, 1.25; 95% CI, 0.97 to 1.60; P=0.08).
  • The mean procedure duration was longer with IVUS-guided PCI (88.8 minutes) compared to angiography-guided PCI (66.2 minutes).
  • Procedural complications were similar between groups (11.3% for IVUS-guided vs. 10.2% for angiography-guided), with no significant difference in overall adverse events.

Conclusions:

  • Routine IVUS-guided PCI, employing specific stent-optimization criteria, did not demonstrate a reduced risk of target-vessel failure compared to angiography-guided PCI alone in complex high-risk PCI patients.
  • The study suggests that the routine use of IVUS guidance in this patient population may not offer superior outcomes regarding target-vessel failure.
  • Further research may be needed to identify specific subgroups or optimize IVUS utilization for complex PCI procedures.