PREDICT: Preoperative Identification of the Histologically "Vulnerable" Plaque Using Non-invasive Imaging, Biomechanical Assessment and Baroreflex Evaluation in Patients With Severe Carotid Stenosis
Study Details
Study Description
Brief Summary
Carotid artery stenosis due to atherosclerotic plaques accounts for an important cause of ischemic stroke. Current research seeks to risk stratify asymptomatic patients by characterizing rupture-prone plaques. Currently no single imaging modality can reliably identify those plaques before surgery. Recently, the 3D ultrasound (US) and the assessment of the mechanical stress on the vessel wall have been proposed as non-invasive tools that could play a role in the diagnostic work-up. Data of histological validation, however, are still needed. In this research, 3D US, non-invasive elastography, Finite Element Analysis of computed tomography angiography images and the study of the autonomic cardiovascular control will be used to identify preoperatively the vulnerable plaque in patients undergoing carotid endarterectomy. The results will be compared to that of histology of the removed plaque, aiming to provide a validation to each method for a possible application in the daily practice.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Study Design
Outcome Measures
Primary Outcome Measures
- Plaque vulnerability [Through study completion, an average of 3 years]
To assess the correlation between the result of 3D US in identifying preoperatively the features of vulnerable plaque (plaque volume; presence of a lipidic core/intraplaque hemorrhage/plaque ulceration; fibrous cap thickness) and that of the histological analysis, in patients who will undergo CEA for a 70-99% carotid stenosis. To assess the correlation between the US-SE parameters to plaque vulnerability, as defined by the histological analysis.
- Plaque vulnerability [Through study completion, an average of 3 years]
To assess the state of the autonomic function and cardiovascular control in patients undergoing CEA and check if there is a relation with the histological analysis of the carotid plaque after CEA.
- Plaque vulnerability [Through study completion, an average of 3 years]
To develop software routines to process US B-mode and US-SE images; to determine the mechanical stress patterns on the vessel wall by the different types of carotid plaques through the FEA of preoperative CTA scans of the recruited patients, and their correlation with the plaque histology and 3D US images. relation with the histological analysis of the carotid plaque after CEA.
Eligibility Criteria
Criteria
Inclusion Criteria:
-
age above 18 years;
-
signed informed consent.
Exclusion Criteria:
-
medical conditions limiting expected survival to <1 year;
-
patients with significant uncontrolled or unstable medical condition (heart failure or angina pectoris class NYHA III-IV, cardiac surgery in the previous 30 days, left ventricular ejection fraction <30%, severe chronic obstructive pulmonary disease, myocardial infarction in the previous 30 days, coronary heart disease with revascularization indication, that is, the common trunk or more than two coronary vessels);
-
tracheostomy;
-
paralysis of the laryngeal nerve contralateral to the carotid stenosis;
-
women of childbearing potential;
-
inability to give informed consent;
-
patients presenting contraindications to perform a CTA examination of neck vessels with contrast medium;
-
patients with medical history of stroke/TIA within the previous 6 months.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | IRCCS Policlinico San Donato | San Donato Milanese | Milan | Italy | 20097 |
Sponsors and Collaborators
- IRCCS Policlinico S. Donato
- University of Pavia
- Ministry of Health, Italy
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
- AlMuhanna K, Hossain MM, Zhao L, Fischell J, Kowalewski G, Dux M, Sikdar S, Lal BK. Carotid plaque morphometric assessment with three-dimensional ultrasound imaging. J Vasc Surg. 2015 Mar;61(3):690-7. doi: 10.1016/j.jvs.2014.10.003. Epub 2014 Dec 9.
- Gupta A, Baradaran H, Schweitzer AD, Kamel H, Pandya A, Delgado D, Dunning A, Mushlin AI, Sanelli PC. Carotid plaque MRI and stroke risk: a systematic review and meta-analysis. Stroke. 2013 Nov;44(11):3071-7. doi: 10.1161/STROKEAHA.113.002551. Epub 2013 Aug 29.
- Heart rate variability: standards of measurement, physiological interpretation and clinical use. Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Circulation. 1996 Mar 1;93(5):1043-65. No abstract available.
- Huibers A, de Borst GJ, Wan S, Kennedy F, Giannopoulos A, Moll FL, Richards T. Non-invasive Carotid Artery Imaging to Identify the Vulnerable Plaque: Current Status and Future Goals. Eur J Vasc Endovasc Surg. 2015 Nov;50(5):563-72. doi: 10.1016/j.ejvs.2015.06.113. Epub 2015 Aug 19.
- Kolos I, Troitskiy A, Balakhonova T, Shariya M, Skrypnik D, Tvorogova T, Deev A, Boytsov S; Aggressive Medical Treatment Evaluation for Asymptomatic Carotid Artery Stenosis (AMTEC) Study Group. Modern medical treatment with or without carotid endarterectomy for severe asymptomatic carotid atherosclerosis. J Vasc Surg. 2015 Oct;62(4):914-22. doi: 10.1016/j.jvs.2015.05.005.
- Mahmood B, Ewertsen C, Carlsen J, Nielsen MB. Ultrasound Vascular Elastography as a Tool for Assessing Atherosclerotic Plaques - A Systematic Literature Review. Ultrasound Int Open. 2016 Nov;2(4):E106-E112. doi: 10.1055/s-0042-115564. Epub 2016 Oct 13.
- Pagani M, Montano N, Porta A, Malliani A, Abboud FM, Birkett C, Somers VK. Relationship between spectral components of cardiovascular variabilities and direct measures of muscle sympathetic nerve activity in humans. Circulation. 1997 Mar 18;95(6):1441-8. doi: 10.1161/01.cir.95.6.1441.
- Ricotta JJ, Aburahma A, Ascher E, Eskandari M, Faries P, Lal BK; Society for Vascular Surgery. Updated Society for Vascular Surgery guidelines for management of extracranial carotid disease. J Vasc Surg. 2011 Sep;54(3):e1-31. doi: 10.1016/j.jvs.2011.07.031. Erratum In: J Vasc Surg. 2012 Mar;55(3):894.
- Sadat U, Li ZY, Young VE, Graves MJ, Boyle JR, Warburton EA, Varty K, O'Brien E, Gillard JH. Finite element analysis of vulnerable atherosclerotic plaques: a comparison of mechanical stresses within carotid plaques of acute and recently symptomatic patients with carotid artery disease. J Neurol Neurosurg Psychiatry. 2010 Mar;81(3):286-9. doi: 10.1136/jnnp.2009.190363. Epub 2009 Nov 25.
- Simel DL, Samsa GP, Matchar DB. Likelihood ratios with confidence: sample size estimation for diagnostic test studies. J Clin Epidemiol. 1991;44(8):763-70. doi: 10.1016/0895-4356(91)90128-v.
- Spence JD. Endarterectomy vs. stenting vs. medical therapy. Int J Stroke. 2016 Jul;11(5):500-1. doi: 10.1177/1747493016643552. Epub 2016 Apr 11. Erratum In: Int J Stroke. 2016 Jul;11(5):NP62.
- Tsekouras NS, Katsargyris A, Skrapari I, Bastounis EE, Georgopoulos S, Klonaris C, Bakoyiannis C, Bastounis EA. The role of carotid plaque echogenicity in baroreflex sensitivity. J Vasc Surg. 2011 Jul;54(1):93-9. doi: 10.1016/j.jvs.2010.11.121. Epub 2011 Mar 31.
- van Engelen A, Wannarong T, Parraga G, Niessen WJ, Fenster A, Spence JD, de Bruijne M. Three-dimensional carotid ultrasound plaque texture predicts vascular events. Stroke. 2014 Sep;45(9):2695-701. doi: 10.1161/STROKEAHA.114.005752. Epub 2014 Jul 17.
- GR-2018-12366862