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Zhuo J, Wang L, Li R, Li Z, Zhang J, Xu Y. Identification of symptomatic carotid artery plaque: a predictive model combining angiography with optical coherence tomography. Front Neurol 2024; 15:1445227. [PMID: 39281411 PMCID: PMC11392725 DOI: 10.3389/fneur.2024.1445227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Accepted: 08/22/2024] [Indexed: 09/18/2024] Open
Abstract
Objective Symptomatic carotid artery disease is indicative of an elevated likelihood of experiencing a subsequent stroke, with the morphology of plaque and its specific features being closely linked to the risk of stroke occurrence. Our study based on the characteristics of carotid plaque assessed by optical coherence tomography (OCT), the plaque morphology evaluated by digital subtraction angiography (DSA) and clinical laboratory indicators were combined, develop a combined predictive model to identify symptomatic carotid plaque. Methods Patients diagnosed with carotid atherosclerotic stenosis who underwent whole-brain DSA and OCT examination at the Affiliated Hospital of Jining Medical University from January 2021 to November 2023 were evaluated. Clinical features, as well as DSA and OCT plaque characteristics, were analyzed for differences between symptomatic and asymptomatic cohorts. An analysis of logistic regression was carried out to identify factors associated with the presence of symptomatic carotid plaque. A multivariate binary logistic regression equation was established with the odds ratio (OR) serving as the risk assessment parameter. The receiver operating characteristic curve was utilized to assess the combined predictive model and independent influencing factors. Results A total of 52 patients were included in the study (symptomatic: 44.2%, asymptomatic: 55.8%). Symptomatic carotid stenosis was significantly linked to four main factors: low-density lipoprotein-cholesterol >3.36 mmol/L [OR, 6.400; 95% confidence interval (CI), 1.067-38.402; p = 0.042], irregular plaque (OR, 6.054; 95% CI, 1.016-36.083; p = 0.048), ruptured plaque (OR, 6.077; 95% CI, 1.046-35.298; p = 0.048), and thrombus (OR, 6.773; 95% CI, 1.194-38.433; p = 0.044). The combined predictive model generated using four indicators showed good discrimination (Area Under Curve, 0.924; 95% CI, 0.815-0. 979). The p value was <0.05 with 78.26% sensitivity and 93.10% specificity. Conclusion OCT is valuable in evaluating the plaque characteristics of carotid atherosclerotic stenosis. The combined predictive model comprising low-density lipoprotein-cholesterol >3.36 mmol/L, irregular plaque, ruptured plaque, and thrombus could help in the detection of symptomatic carotid plaque. Further research conducted on additional independent cohorts is necessary to confirm the clinical significance of the predictive model for symptomatic carotid plaque.
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Affiliation(s)
- Jun Zhuo
- Medical Engineering and Technology Research Center, School of Radiology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
- Medical Science and Technology Innovation Center, Institute of Medical Engineering and Interdisciplinary Research, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- Department of Interventional Radiology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Lin Wang
- Department of Interventional Radiology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Ruolin Li
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Zhiyuan Li
- Department of Interventional Radiology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Junhu Zhang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, China
| | - Yunjian Xu
- Medical Engineering and Technology Research Center, School of Radiology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
- Medical Science and Technology Innovation Center, Institute of Medical Engineering and Interdisciplinary Research, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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Polidar P, Paskova B, Karhanova M, Sin M, Dornak T, Schreiberova Z, Divisova P, Veverka T, Franc D, Sanak D, Kral M. Study protocol - Prospective case-control trial - Impact of significant carotid stenosis on retinal perfusion measured with automated retinal oximetry. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2024. [PMID: 38192247 DOI: 10.5507/bp.2023.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Large vessel carotid stenosis is a significant cause of ischaemic stroke. Indications for surgical revascularisation depend on the severity of the stenosis and clinical symptoms. However, mild symptoms such as TIA (Transient ischaemic attack), amaurosis fugax or minor stroke precede large strokes in only 15% of cases. AIM The aim of this prospective study is to evaluate whether retinal perfusion is impacted in significant carotid stenosis. Automated retinal oximetry will be used to better assess perfusion in the post-stenotic basin. We presume the more stenotic the blood vessel, the more reduced the retinal perfusion is, resulting in adaptive changes such as greater arteriovenous saturation difference due to greater oxygen extraction. This could broaden the indication spectrum for revascularisation for carotid stenosis. METHODS We plan to enroll yearly 50 patients with significant carotid stenosis and cross-examine them with retinal oximetry. The study group will provide stenotic vessels and, non-stenotic vessels will form the control group. Patients with significant carotid stenosis will undergo an MRI (Magnetic Resonnance imaging) examination to determine the presence of asymptomatic recent ischaemic lesions in the stenotic basin, and the correlation to oximetry parameters. STATISTICS The stenosis severity and retinal oximetry parameters will be compared for study and control groups with a threshold of 70%, respectively 80% and 90% stenosis. Results will be then reevaluated with emphasis on MRI findings in the carotid basin. CONCLUSION This prospective case control study protocol will be used to launch a multicentre trial assessing the relationship between significant carotid stenosis and retinal perfusion measured with automated retinal oximetry. Despite these differences, the findings indicate the potential of retinal oximetry for noninvasive real-time measurements of oxyhaemoglobin saturation in central nervous system vessels. Following calibration upgrade and technological improvement, verification retinal oximetry may potentially be applied to critically ill and anaesthesia care patients. The study on combined scanning laser ophthalmoscope and retinal oximetry supports the feasibility of the technique for oximetry analysis in newly born babies. TRIAL REGISTRATION ClinicalTrials.gov, ID: NCT06085612.
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Affiliation(s)
- Petr Polidar
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
| | - Barbora Paskova
- Department of Ophthalmology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Ophthalmology, University Hospital Olomouc, Czech Republic
| | - Marta Karhanova
- Department of Ophthalmology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Ophthalmology, University Hospital Olomouc, Czech Republic
| | - Martin Sin
- Department of Ophthalmology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Ophthalmology, Central Military Hospital Prague, Czech Republic
| | - Tomas Dornak
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
| | - Zuzana Schreiberova
- Department of Ophthalmology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Ophthalmology, University Hospital Olomouc, Czech Republic
| | - Petra Divisova
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
| | - Tomas Veverka
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
| | - David Franc
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
| | - Daniel Sanak
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
| | - Michal Kral
- Department of Neurology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
- Department of Neurology, University Hospital Olomouc, Czech Republic
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Clezar CN, Flumignan CD, Cassola N, Nakano LC, Trevisani VF, Flumignan RL. Pharmacological interventions for asymptomatic carotid stenosis. Cochrane Database Syst Rev 2023; 8:CD013573. [PMID: 37565307 PMCID: PMC10401652 DOI: 10.1002/14651858.cd013573.pub2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
BACKGROUND Carotid artery stenosis is narrowing of the carotid arteries. Asymptomatic carotid stenosis is when this narrowing occurs in people without a history or symptoms of this disease. It is caused by atherosclerosis; that is, the build-up of fats, cholesterol, and other substances in and on the artery walls. Atherosclerosis is more likely to occur in people with several risk factors, such as diabetes, hypertension, hyperlipidaemia, and smoking. As this damage can develop without symptoms, the first symptom can be a fatal or disabling stroke, known as ischaemic stroke. Carotid stenosis leading to ischaemic stroke is most common in men older than 70 years. Ischaemic stroke is a worldwide public health problem. OBJECTIVES To assess the effects of pharmacological interventions for the treatment of asymptomatic carotid stenosis in preventing neurological impairment, ipsilateral major or disabling stroke, death, major bleeding, and other outcomes. SEARCH METHODS We searched the Cochrane Stroke Group trials register, CENTRAL, MEDLINE, Embase, two other databases, and three trials registers from their inception to 9 August 2022. We also checked the reference lists of any relevant systematic reviews identified and contacted specialists in the field for additional references to trials. SELECTION CRITERIA We included all randomised controlled trials (RCTs), irrespective of publication status and language, comparing a pharmacological intervention to placebo, no treatment, or another pharmacological intervention for asymptomatic carotid stenosis. DATA COLLECTION AND ANALYSIS We used standard Cochrane methodological procedures. Two review authors independently extracted the data and assessed the risk of bias of the trials. A third author resolved disagreements when necessary. We assessed the evidence certainty for key outcomes using GRADE. MAIN RESULTS We included 34 RCTs with 11,571 participants. Data for meta-analysis were available from only 22 studies with 6887 participants. The mean follow-up period was 2.5 years. None of the 34 included studies assessed neurological impairment and quality of life. Antiplatelet agent (acetylsalicylic acid) versus placebo Acetylsalicylic acid (1 study, 372 participants) may result in little to no difference in ipsilateral major or disabling stroke (risk ratio (RR) 1.08, 95% confidence interval (CI) 0.47 to 2.47), stroke-related mortality (RR 1.40, 95% CI 0.54 to 3.59), progression of carotid stenosis (RR 1.16, 95% CI 0.79 to 1.71), and adverse events (RR 0.81, 95% CI 0.41 to 1.59), compared to placebo (all low-certainty evidence). The effect of acetylsalicylic acid on major bleeding is very uncertain (RR 0.98, 95% CI 0.06 to 15.53; very low-certainty evidence). The study did not measure neurological impairment or quality of life. Antihypertensive agents (metoprolol and chlorthalidone) versus placebo The antihypertensive agent, metoprolol, may result in no difference in ipsilateral major or disabling stroke (RR 0.14, 95% CI 0.02 to1.16; 1 study, 793 participants) and stroke-related mortality (RR 0.57, 95% CI 0.17 to 1.94; 1 study, 793 participants) compared to placebo (both low-certainty evidence). However, chlorthalidone may slow the progression of carotid stenosis (RR 0.45, 95% CI 0.23 to 0.91; 1 study, 129 participants; low-certainty evidence) compared to placebo. Neither study measured neurological impairment, major bleeding, adverse events, or quality of life. Anticoagulant agent (warfarin) versus placebo The evidence is very uncertain about the effects of warfarin (1 study, 919 participants) on major bleeding (RR 1.19, 95% CI 0.97 to 1.46; very low-certainty evidence), but it may reduce adverse events (RR 0.89, 95% CI 0.81 to 0.99; low-certainty evidence) compared to placebo. The study did not measure neurological impairment, ipsilateral major or disabling stroke, stroke-related mortality, progression of carotid stenosis, or quality of life. Lipid-lowering agents (atorvastatin, fluvastatin, lovastatin, pravastatin, probucol, and rosuvastatin) versus placebo or no treatment Lipid-lowering agents may result in little to no difference in ipsilateral major or disabling stroke (atorvastatin, lovastatin, pravastatin, and rosuvastatin; RR 0.36, 95% CI 0.09 to 1.53; 5 studies, 2235 participants) stroke-related mortality (lovastatin and pravastatin; RR 0.25, 95% CI 0.03 to 2.29; 2 studies, 1366 participants), and adverse events (fluvastatin, lovastatin, pravastatin, probucol, and rosuvastatin; RR 0.76, 95% CI 0.53 to1.10; 7 studies, 3726 participants) compared to placebo or no treatment (all low-certainty evidence). The studies did not measure neurological impairment, major bleeding, progression of carotid stenosis, or quality of life. AUTHORS' CONCLUSIONS Although there is no high-certainty evidence to support pharmacological intervention, this does not mean that pharmacological treatments are ineffective in preventing ischaemic cerebral events, morbidity, and mortality. High-quality RCTs are needed to better inform the best medical treatment that may reduce the burden of carotid stenosis. In the interim, clinicians will have to use other sources of information.
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Affiliation(s)
- Caroline Nb Clezar
- Department of Surgery, Division of Vascular and Endovascular Surgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Carolina Dq Flumignan
- Department of Surgery, Division of Vascular and Endovascular Surgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Nicolle Cassola
- Department of Surgery, Division of Vascular and Endovascular Surgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Luis Cu Nakano
- Department of Surgery, Division of Vascular and Endovascular Surgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Virginia Fm Trevisani
- Medicina de Urgência and Rheumatology, Escola Paulista de Medicina, Universidade Federal de São Paulo and Universidade de Santo Amaro, São Paulo, Brazil
| | - Ronald Lg Flumignan
- Department of Surgery, Division of Vascular and Endovascular Surgery, Universidade Federal de São Paulo, São Paulo, Brazil
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Yamashita K, Sugimori H, Nakamizo A, Amano T, Kuwashiro T, Watanabe T, Kawamata K, Furuya K, Harada S, Kamei R, Maehara J, Okada Y, Noguchi T. Different hemodynamics of basal ganglia between moyamoya and non-moyamoya diseases using intravoxel incoherent motion imaging and single-photon emission computed tomography. Acta Radiol 2023; 64:769-775. [PMID: 35466686 DOI: 10.1177/02841851221092895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Moyamoya disease (MMD) and non-MMD have different pathogenesis, clinical presentation, and treatment policy. PURPOSE To identify differences in hemodynamics between MMD and non-MMD using intravoxel incoherent motion (IVIM) magnetic resonance imaging (MRI) and single-photon emission computed tomography (SPECT). MATERIAL AND METHODS Patients who had undergone 99mTc-ECD or 123I-IMP SPECT, and IVIM imaging were retrospectively studied. IVIM imaging was acquired using six different b-values. Cerebral blood flow ratio (CBFR) in the basal ganglia was calculated using a standardized volume-of-interest template. The cerebellum was used as a reference region. IVIM perfusion fraction (f) was obtained using a two-step fitting algorithm. Elliptical regions of interest were placed in bilateral basal ganglia on the IVIM f map. Patients were classified into MMD and non-MMD groups. The correlation between CBFR and mean IVIM f (fmean) in the basal ganglia was evaluated using Spearman's rank correlation coefficient. RESULTS In total, 20 patients with MMD and 28 non-MMD patients were analyzed. No significant differences in fmean were observed among MMD, affected hemisphere with non-MMD (non-MMDaff), and unaffected hemispheres with non-MMD (non-MMDunaff). A negative correlation was seen between fmean and CBFR in the MMD group (r = -0.40, P = 0.0108), but not in the non-MMD group (non-MMDaff, r = 0.07, P = 0.69; non-MMDunaff, r = -0.22, P = 0.29). No significant differences were found among MMD and non-MMD patients, irrespective of SPECT tracers. CONCLUSION The combination of IVIM MRI and SPECT appears to allow non-invasive identification of differences in hemodynamics between MMD and non-MMD.
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Affiliation(s)
- Koji Yamashita
- Department of Radiology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Hiroshi Sugimori
- Department of Cerebrovascular Medicine and Neurology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Akira Nakamizo
- Department of Neurosurgery, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Toshiyuki Amano
- Department of Neurosurgery, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Takahiro Kuwashiro
- Department of Cerebrovascular Medicine and Neurology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Takeharu Watanabe
- Department of Medical Technology, Division of Radiology, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Keisuke Kawamata
- Department of Medical Technology, Division of Radiology, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Kiyomi Furuya
- Department of Radiology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Shino Harada
- Department of Radiology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Ryotaro Kamei
- Department of Radiology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Junki Maehara
- Department of Radiology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Yasushi Okada
- Department of Cerebrovascular Medicine and Neurology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Tomoyuki Noguchi
- Department of Radiology, Clinical Research Institute, 37085National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
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Yang Q, Guo H, Shi X, Xu X, Zha M, Cai H, Yang D, Huang F, Zhang X, Lv Q, Liu R, Liu X. Identification of Symptomatic Carotid Artery Plaque: A Three-Item Scale Combined Angiography With Optical Coherence Tomography. Front Neurosci 2021; 15:792437. [PMID: 34955737 PMCID: PMC8702715 DOI: 10.3389/fnins.2021.792437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 11/12/2021] [Indexed: 01/08/2023] Open
Abstract
Introduction: Symptomatic carotid disease conveys a high risk of recurrent stroke. Plaque morphology and specific plaque characteristics are associated with the risk of stroke. This study aimed to evaluate the detailed plaque features by optical coherence tomography (OCT) and develop a simple scale combining clinical indicators, digital subtraction angiography (DSA), and OCT imaging markers to identify symptomatic carotid plaque. Methods: Carotid plaques from consecutive patients who underwent carotid OCT imaging between June 2017 and June 2021 were evaluated. Clinical characteristics, DSA, and OCT data were compared between the symptomatic and asymptomatic groups. Logistic regression was performed to identify the factors associated with symptomatic carotid plaque and to develop a scale. The area under the receiver operating characteristic curve (AUC) was used to evaluate the performance of the scale. Results: A total of 90 carotid plaques from 90 patients were included (symptomatic 35.6%, asymptomatic 64.4%). Three main factors were found to be associated with symptomatic carotid plaque: high-density lipoprotein cholesterol (HDL-C) <0.925 mmol/L (OR, 4.708; 95% CI, 1.640 to 13.517; P = 0.004), irregular plaque (OR, 4.017; 95% CI, 1.250 to 12.910; P = 0.020), and white thrombus (OR, 4.594; 95% CI, 1.141 to 18.487; P = 0.032). The corresponding score of three items produced a scale with good discrimination (AUC, 0.768; 95% CI, 0.665 to 0.871). The optimal cutoff value of the scale was 1.5 points with 59.4% sensitivity and 84.5% specificity. Conclusion: The three-item scale comprising HDL-C <0.925 mmol/L, angiographical irregular plaque, and white thrombus detected by OCT may provide information to identify symptomatic carotid plaque. Further large-scale studies are required to validate whether the symptomatic carotid plaque scale is clinically valuable in recognizing carotid atherosclerosis in the early stages.
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Affiliation(s)
- Qingwen Yang
- Department of Neurology, Jinling Hospital, Medical School of Southeast University, Nanjing, China
| | - Hongquan Guo
- Department of Neurology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China
| | - Xuan Shi
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xiaohui Xu
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Mingming Zha
- Department of Neurology, Jinling Hospital, Medical School of Southeast University, Nanjing, China
| | - Haodi Cai
- Department of Neurology, Jinling Hospital, Medical School of Southeast University, Nanjing, China
| | - Dahong Yang
- Department of Neurology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China
| | - Feihong Huang
- Department of Neurology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China
| | - Xiaohao Zhang
- Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Qiushi Lv
- Department of Neurology, Jinling Hospital, Medical School of Southeast University, Nanjing, China.,Department of Neurology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China.,Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Rui Liu
- Department of Neurology, Jinling Hospital, Medical School of Southeast University, Nanjing, China.,Department of Neurology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China.,Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xinfeng Liu
- Department of Neurology, Jinling Hospital, Medical School of Southeast University, Nanjing, China.,Department of Neurology, Jinling Hospital, The First School of Clinical Medicine, Southern Medical University, Nanjing, China.,Department of Neurology, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, China
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The risk factors of old silent brain infarctions in carotid artery stenosis. Neurol Sci 2021; 43:2397-2404. [PMID: 34586540 DOI: 10.1007/s10072-021-05638-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 09/25/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND PURPOSE This study aims to investigate the risk factors of old ipsilateral silent brain infarctions (iSBIs) in patients with internal carotid artery (ICA) stenosis. METHODS Consecutive patients with unilateral ICA stenosis ≥ 50% or occlusion were retrospectively enrolled. Old iSBIs were assessed on magnetic resonance imaging. Baseline characteristics and imaging features were compared between patients with and without iSBIs. Multivariable regression analysis was conducted to identify independent risk factors of iSBIs. RESULTS We enrolled 274 patients with unilateral ICA stenosis ≥ 50% or occlusion. One hundred thirty-three patients had iSBIs to stenosed ICA (48.54%). One hundred thirty-seven patients had recent brain infarction on either side (50.0%). The patients with iSBIs had a lower level of high-density lipoprotein [OR 0.60, 95% CI (0.36-0.96), P = 0.045], higher prevalence of irregular/ulcer plaque [OR 10.71, 95% CI (4.60-24.95), P < 0.0001], and incompleteness of circle of Willis [OR 0.27, 95% CI (0.16-0.45), P < 0.0001] in all enrolled patients. In the patients without recent infarction on either side, lower level of high-density lipoprotein [OR 0.42, 95% CI (0.27-0.88), P = 0.031], higher prevalence of irregular/ulcer plaque [OR 12.73, 95% CI (4.13-39.22), P < 0.0001] and incompleteness of circle of Willis [OR 0.24, 95% CI (0.11-0.50), P = 0.004] were independently associated with iSBIs. The results were similar in ICA stenosis patients with recent brain infarction on either side. CONCLUSION In patients with carotid stenosis, incompleteness of circle of Willis, irregular/ulcer plaque, and lower level of high-density lipoprotein were independently associated with old iSBIs.
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Carotid artery plaque structure in the context of symptomatic/asymptomatic nature of carotid artery stenosis. COR ET VASA 2021. [DOI: 10.33678/cor.2021.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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White matter hyperintensity determines ischemic stroke severity in symptomatic carotid artery stenosis. Neurol Sci 2021; 42:3367-3374. [PMID: 33411197 DOI: 10.1007/s10072-020-04958-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The aim of this study is to investigate the influence of white matter hyperintensity (WMH) on stroke severity and prognosis in patients with symptomatic carotid artery stenosis. METHODS Patients with symptomatic carotid artery stenosis were retrieved from the Samsung Medical Center stroke registry from January 2011 to December 2016. Stroke severity was categorized into three levels according to National Institutes of Health Stroke Scale (NIHSS): transient ischemic attack (TIA) or transient symptoms with infarction (TSI), mild stroke, and moderate to severe stroke. WMH volume was measured with medical image processing and visualization. The clinical outcome was assessed using the modified Rankin scale on the 90th day from which the latest onset of the neurological symptom. Logistic regression was used to predict stroke severity, and ordinal regression was used to compare the clinical outcome. RESULTS Among 158 patients, the numbers of patients with TIA or TSI, mild stroke, and moderate to severe stroke were 48 (30.4%), 59 (37.3%), and 51 (32.3%), respectively. The larger WMH volume was associated with moderate to severe strokes (TIA/TSI vs. moderate to severe strokes, odds ratio (OR) 2.318, 95% confidence interval (CI) 1.194-4.502, p = 0.007; mild vs. moderate to severe strokes, OR 1.972, 95% CI 1.118-3.479, p = 0.013). Patients with larger volume of WMH showed poorer clinical outcome (cutoff value: 9.71 cm3, OR 2.099, 95% CI 1.030-4.311, p = 0.042). CONCLUSION Our study showed that larger WMH volume is associated with more severe stroke and poorer prognosis in patients with symptomatic carotid artery stenosis.
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Yan H, Chang Z, Liu Z. The risk factors for calcification vary among the different sections of the lower extremity artery in patients with symptomatic peripheral arterial disease. BMC Cardiovasc Disord 2020; 20:333. [PMID: 32652946 PMCID: PMC7353700 DOI: 10.1186/s12872-020-01615-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 07/07/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Peripheral arterial disease (PAD) is associated with considerable mortality and morbidity worldwide. The present study explored the risk factors for arterial calcification among the different sections of the lower extremity in patients with PAD and analyzed their correlations with the extent of arterial stenosis at the corresponding section. METHODS This study enrolled symptomatic PAD patients from our hospital from March 2017 to March 2018. The lower extremity arterial calcification score (LEACS) and lower extremity arterial stenosis index (LEASI), representing the extent of arterial stenosis, were measured on computed tomography (CT) and the correlations between them were analyzed using Spearman's correlation analysis. The relationships between risk factors and calcification were analyzed among the different sections of the lower extremity artery. RESULTS In total, 209 patients were included. The LEACSs of the total lower extremity, aortoiliac artery, and femoropopliteal and infrapopliteal arteries were correlated with the LEASI (all P < 0.05), but their correlation was relatively weak in the aortoiliac artery. Univariate analysis showed that hypertension was associated with the total (P = 0.019) and aortoiliac (P = 0.012) LEACSs. Diabetes was related to both femoropopliteal (P = 0.001) and infrapopliteal (P = 0.002) LEACSs. The infrapopliteal LEACS was higher in male patients (P = 0.011). After adjustment for age, the above relationships were maintained among the different sections, but not in the total lower extremity artery. CONCLUSIONS The LEACS is associated with the LEASI in all arterial sections, but that of the aortoiliac artery was relatively weak. Different factors have different effects on calcification among the various sections of the lower extremity artery.
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Affiliation(s)
- Hankun Yan
- Department of Radiology, Shengjing Hospital of China Medical University, NO. 36, Sanhao Street, Heping District, Shenyang City, 110004, Liaoning Province, China
| | - Zhihui Chang
- Department of Radiology, Shengjing Hospital of China Medical University, NO. 36, Sanhao Street, Heping District, Shenyang City, 110004, Liaoning Province, China
| | - Zhaoyu Liu
- Department of Radiology, Shengjing Hospital of China Medical University, NO. 36, Sanhao Street, Heping District, Shenyang City, 110004, Liaoning Province, China.
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Clezar CNB, Cassola N, Flumignan CDQ, Nakano LCU, Trevisani VFM, Flumignan RLG. Pharmacological interventions for asymptomatic carotid stenosis. Hippokratia 2020. [DOI: 10.1002/14651858.cd013573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Caroline NB Clezar
- Universidade Federal de São Paulo; Department of Surgery, Division of Vascular and Endovascular Surgery; Rua Borges Lagoa, 754 São Paulo Brazil
| | - Nicolle Cassola
- Universidade Federal de São Paulo; Department of Surgery, Division of Vascular and Endovascular Surgery; Rua Borges Lagoa, 754 São Paulo Brazil
| | - Carolina DQ Flumignan
- Universidade Federal de São Paulo; Department of Surgery, Division of Vascular and Endovascular Surgery; Rua Borges Lagoa, 754 São Paulo Brazil
| | - Luis CU Nakano
- Universidade Federal de São Paulo; Department of Surgery, Division of Vascular and Endovascular Surgery; Rua Borges Lagoa, 754 São Paulo Brazil
| | - Virginia FM Trevisani
- Escola Paulista de Medicina, Universidade Federal de São Paulo and Universidade de Santo Amaro; Medicina de Urgência and Rheumatology; Rua Botucatu, 740 Vila Clementino São Paulo São Paulo Brazil 04023-900
| | - Ronald LG Flumignan
- Universidade Federal de São Paulo; Department of Surgery, Division of Vascular and Endovascular Surgery; Rua Borges Lagoa, 754 São Paulo Brazil
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