Stress-Strain Profile of Carotid Plaque With and Without Juxtaluminal Hemorrhage/Thrombus: A Possible Mechanism for Subsequent Cerebrovascular Events

2011 ◽  
Author(s):  
Zhongzhao Teng ◽  
Umar Sadat ◽  
Jonathan H. Gillard
Keyword(s):  
High Risk ◽  
Transient Ischemic Attack ◽  
Carotid Plaque ◽  
Recurrent Events ◽  
Atherosclerotic Plaques ◽  
High Grade ◽  
Benefit Ratio ◽  
Clear Cut ◽  
Cerebrovascular Events ◽  
Ischemic Attack

Patients suffering from a transient ischemic attack (TIA) are at high risk of a stroke or recurrent TIA, with about half of all recurrent events during the seven days after a TIA occurring in the first 24 hours. These events are usually caused by thromboembolization from ruptured carotid atherosclerotic plaques. Large trials have shown that carotid endarterectomy benefits patients with high grade carotid stenosis, but the risk-to-benefit ratio was less clear-cut for symptomatic patients with moderate stenosis (50–69%). Therefore, identification of high-risk plaques within this group could significantly decrease the ratio.

Abstract TP387: Abcd 2 Score Predicts The Long-term Risk Of Stroke After Transient Ischemic Attack: Fukuoka Stroke Registry

Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Yasuhiro Kumai ◽  
Takuya Kiyohara ◽  
Masahiro Kamouchi ◽  
Sohei Yoshimura ◽  
Hiroshi Sugimori ◽  
...  
Keyword(s):  
High Risk ◽  
Transient Ischemic Attack ◽  
Risk Group ◽  
High Risk Group ◽  
Low Risk ◽  
Rank Test ◽  
Moderate Risk ◽  
Stroke Registry ◽  
Ischemic Attack

Background and Purpose— ABCD 2 score has been developed to predict the early risk of stroke after transient ischemic attack (TIA). The aim of this study was to clarify whether ABCD 2 score predicts the occurrence of stroke in the long term after TIA. Methods— Fukuoka Stroke Registry (FSR) is a multicenter epidemiological study database on acute stoke. From June 2007 to June 2011, 496 (305 males, 70 ± 13 years of age) patients who had suffered from TIA and were hospitalized in the 7 stroke centers within 7 days after the onset of TIA were enrolled in this study. The patients were divided into three groups according to the risk: low-risk (ABCD 2 score 0-3; n=72), moderate-risk (4-5; n=229) and high-risk group (6-7; n=195). They were followed up prospectively for up to 3 years. Cox proportional hazard regression model was used to elucidate whether ABCD 2 score was a predictor for stroke after TIA after adjusting for confounding factors. Results— Among three groups, there were significant differences in age, hypertension, diabetes mellitus and the decrease in estimated glomerular filtration rate (P<0.01, significantly). During a mean follow-up of 1.3 years, Kaplan-Meier analysis demonstrated that the stroke rate in TIA patients was significantly lower in low-risk group than in moderate-risk or high-risk group (log rank test, p<0.001). The adjusted hazard ratios for stroke in patients with TIA increased with moderate-risk group (Hazard ratio [HR]: 3.47, 95% CI: 1.03-21.66, P<0.05) and high-risk group (HR: 4.46, 95% CI: 1.31-27.85, P<0.05), compared to low-risk group. Conclusions— The ABCD 2 score is able to predict the long-term risk of stroke after TIA.

scholarly journals LO89: A multi-disciplinary quality improvement project to improve adherence to best practice guidelines for emergency department patients with transient ischemic attack

CJEM ◽  
2019 ◽  
Vol 21 (S1) ◽  
pp. S40
Author(s):  
A. Verma ◽  
A. Kapoor ◽  
J. Kim ◽  
N. Kujbid ◽  
K. Si ◽  
...  
Keyword(s):  
Emergency Department ◽  
High Risk ◽  
Transient Ischemic Attack ◽  
Retrospective Chart Review ◽  
Stroke Recurrence ◽  
Improvement Project ◽  
Support Tool ◽  
High Risk Patients ◽  
Risk Patients ◽  
Ischemic Attack

Background: Canadian Stroke Guidelines recommend that Transient Ischemic Attack (TIA) patients at highest risk of stroke recurrence should undergo immediate vascular imaging. Computed tomography angiography (CTA) of the head and neck is recommended over carotid doppler because it allows for enhanced visualization of the intracranial and posterior circulation vasculature. Imaging while patients are in the emergency department (ED) is optimal for high-risk patients because the risk of stroke recurrence is highest in the first 48 hours. Aim Statement: At our hospital, a designated stroke centre, less than 5% of TIA patients meet national recommendations by undergoing CTA in the ED. We sought to increase the rate of CTA in high risk ED TIA patients from less than 5% to at least 80% in 10 months. Measures &amp; Design: We used a multi-faceted approach to improve our adherence to guidelines including: 1) education for staff ED physicians; 2) agreements between ED and radiology to facilitate rapid access to CTA; 3) agreements between ED and neurology for consultations regarding patients with abnormal CTA; and 4) the creation of an electronic decision support tool to guide ED physicians as to which patients require CTA. We measured the rate of CTA in high risk patients biweekly using retrospective chart review of patients referred to the TIA clinic from the ED on a biweekly basis. As a balancing measure, we also measured the rate of CTA in non-high risk patients. Evaluation/Results: Data collection is ongoing. An interim run chart at 19 weeks shows a complete shift above the median after implementation, with CTA rates between 70 and 100%. At the time of submission, we had no downward trends below 80%, showing sustained improvement. The CTA rate in non-high risk patients did also increase. Disucssion/Impact: After 19 weeks of our intervention, 112 (78.9%) of high risk TIA patients had a CTA, compared to 10 (9.8%) in the 19 weeks prior to our intervention. On average, 10-15% of high risk patients will have an identifiable lesion on CTA, leading to immediate change in management (at minimum, an inpatient consultation with neurology). Our multi-faceted approach could be replicated in any ED with the engagement and availability of the same multi-disciplinary team (ED, radiology, and neurology), access to CTA, and electronic orders.

scholarly journals Postoperative ischemic events in patients undergoing carotid artery stenting using algorithmic selection for embolic protection

2019 ◽  
Vol 32 (4) ◽  
pp. 294-302 ◽  
Author(s):  
Yasuhiro Kawabata ◽  
Norio Nakajima ◽  
Hidenori Miyake ◽  
Shunichi Fukuda ◽  
Tetsuya Tsukahara
Keyword(s):  
High Risk ◽  
Carotid Artery ◽  
Carotid Endarterectomy ◽  
Transient Ischemic Attack ◽  
Carotid Artery Stenting ◽  
Minor Stroke ◽  
High Risk Patients ◽  
Embolic Protection ◽  
Risk Patients ◽  
Ischemic Attack

Purpose Carotid artery stenting (CAS) is a valuable alternative to carotid endarterectomy, especially in high-risk patients. However, the reported incidences of perioperative stroke and death remain higher than for carotid endarterectomy, even when using embolic protection devices (EPDs) during CAS. Our purpose was to evaluate 30-day major adverse events after CAS when selecting the most appropriate EPD. Methods We reviewed the clinical outcomes of 61 patients with 64 lesions who underwent CAS with EPDs. Patients who underwent CAS associated with thrombectomy and who had a preoperative modified Rankin scale score >3 were excluded from the analysis. The EPD was selected based on symptoms, carotid wall magnetic resonance imaging and lesion length, and we analyzed combined 30-day complication rates (transient ischemic attack, minor stroke, major stroke or death). Results Forty-nine patients were men and 12 were women. The median age was 72 years (range: 59–89 years) and 44 lesions were asymptomatic. A filter-type EPD was selected in 23 procedures, distal-balloon protection in 14 procedures and proximal-occlusive protection in 27 procedures. Two patients (3.1%) experienced a transient ischemic attack and one patient (1.6%) had a minor stroke within 30 days of the procedure. No patients experienced procedure-related morbidities (modified Rankin score >2) or death. Conclusions The perioperative stoke rate was low when we selected a proximal-occlusive-type EPD in high-risk patients with vulnerable carotid artery disease. Our algorithm for EPD selection was an effective tool in the perioperative management of carotid artery stenosis.

Heart Rate as a Predictor of Stroke in High-risk, Hypertensive Patients with Previous Stroke or Transient Ischemic Attack

2014 ◽  
Vol 23 (10) ◽  
pp. 2814-2818 ◽  
Author(s):  
Else Charlotte Sandset ◽  
Eivind Berge ◽  
Sverre E. Kjeldsen ◽  
Stevo Julius ◽  
Björn Holzhauer ◽  
...  
Keyword(s):  
Heart Rate ◽  
High Risk ◽  
Transient Ischemic Attack ◽  
Hypertensive Patients ◽  
Previous Stroke ◽  
Ischemic Attack
Sign in / Sign up

Export Citation Format

Share Document