Related Experiment Video

Updated: Sep 26, 2026

Predicting Amputation using Local Circulating Mononuclear Progenitor Cells in Angioplasty-treated Patients with Critical Limb Ischemia
07:25

Predicting Amputation using Local Circulating Mononuclear Progenitor Cells in Angioplasty-treated Patients with Critical Limb Ischemia

Published on: September 22, 2020

[Value of MR angiography in follow-up after cruro-pedal bypass surgery]

F Verrel1, O Meissner, V Ruppert

  • 1Chirurgische Klinik und Poliklinik, Gefässzentrum-Gefässchirurgie, Klinikum der Universität München-Innenstadt, Nussbaumstrasse 20/Pettenkoferstrasse 8a, 80336 München.

Kongressband. Deutsche Gesellschaft Fur Chirurgie. Kongress
|April 23, 2003
PubMed

Insights

Regular surveillance of bypass grafts after crural or pedal revascularization is crucial. Contrast-enhanced magnetic resonance angiography (MRA) is a valuable tool for detecting critical graft stenosis, improving patient outcomes.

Area of Science:

  • Vascular Surgery
  • Medical Imaging
  • Radiology

Background:

  • Graft failure after crural or pedal revascularization necessitates vigilant patient surveillance.
  • Early detection of stenosis is key to preventing graft failure and maintaining limb perfusion.

Purpose of the Study:

  • To compare the efficacy of clinical examination with duplex scanning versus contrast-enhanced magnetic resonance angiography (MRA) in detecting stenosis in distal bypass grafts.
  • To evaluate the role of MRA in surveillance programs for patients undergoing bypass grafting.

Main Methods:

  • Twenty-six bypass grafts were assessed for stenosis at five distinct locations.
  • Comparison of findings from clinical examination including duplex scanning and contrast-enhanced MRA.
  • Angiographic digital subtraction angiography (DSA) was used for discrepant cases.

Main Results:

  • Both techniques showed high concordance (93/109 locations).
  • MRA identified 3 high-grade stenoses missed by duplex scanning, requiring percutaneous dilatation.
  • MRA demonstrated superior sensitivity in detecting significant stenosis.

Conclusions:

  • Contrast-enhanced MRA is a reliable and effective imaging modality for surveillance of distal bypass grafts.
  • MRA should be integrated into routine surveillance programs to optimize graft patency and patient outcomes.

More Related Videos

Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery09:12

Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery

Published on: March 27, 2018

Related Concept Videos

Peripheral Artery Disease V: Postoperative Nursing Management01:23

Peripheral Artery Disease V: Postoperative Nursing Management

During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
Peripheral Artery Disease III: Interprofessional Care01:27

Peripheral Artery Disease III: Interprofessional Care

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...
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...