Iodinated Contrast Agents Reduce the Efficacy of Intravenous Recombinant Tissue-Type Plasminogen Activator in Acute Ischemic Stroke Patients: a Multicenter Cohort Study

This study aimed to investigate whether the application of iodinated contrast agents before intravenous (IV) recombinant tissue plasminogen activator (rt-PA) reduces the efficacy in acute ischemic stroke (AIS) patients. To determine whether the application of iodinated contrast agents before intravenous rt-PA reduces the efficacy in AIS patients. We analyzed our prospectively collected data of consecutive AIS patients receiving IV rt-PA treatment in the MISSION CHINA study. Clinical outcome at 3  months was assessed with modified Rankin Scale (mRS) score and dichotomized into good outcome (0–2) and poor outcome (3–6). Symptomatic intracerebral hemorrhage (sICH) was defined as cerebral hemorrhagic transformation in combination with clinical deterioration of National Institutes of Health Stroke Scale (NIHSS) score ≥ 4 points at 24-h. We performed logistic regression analysis and propensity score matching analysis to investigate the impact of iodinated contrast agents before IV rt-PA on poor outcome and sICH, respectively. A total of 3593 patients were finally included, and iodi nated contrast agents were used before IV rt-PA among 859 (23.9%) patients. Patients in the iodinated contrast group were more likely to result in poor outcome (39.9% vs 33.4%,P = 0.001) and sICH (3.4% vs 1.5%,P 
Source: Translational Stroke Research - Category: Neurology Source Type: research

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CONCLUSIONS: Recurrent stroke and intracranial hemorrhage were determined to be more prevalent at 5 years after TIA or minor stroke in Japanese patients than in non-Japanese patients. Strategies to mitigate the long-term risks of stroke, aside from adherence to current guidelines, should take Japanese-patient-specific residual risks into account. PMID: 32938836 [PubMed - as supplied by publisher]
Source: Journal of Atherosclerosis and Thrombosis - Category: Cardiology Tags: J Atheroscler Thromb Source Type: research
AbstractBlood –brain barrier (BBB) dysfunction underlies the pathogenesis of many neurological diseases. Platelet-derived growth factor receptor-alpha (PDGFRα) induces hemorrhagic transformation (HT) downstream of tissue plasminogen activator in thrombolytic therapy of acute stroke. Thus, PDGFs are attractive therapeutic targets for BBB dysfunction. In the present study, we examined the role of PDGF signaling in the process of tissue remodeling after middle cerebral arterial occlusion (MCAO) in mice. Firstly, we found that imatinib increased lesion size after permanent MCAO in wild-type mice. Moreover, i matini...
Source: Angiogenesis - Category: Molecular Biology Source Type: research
This study aimed to investigate the potential association between AF and outcomes after MT in AIS patients. A post-hoc analysis of a multi-center prospective clinical trial was conducted. Before and after propensity score matching (PSM), the clinical features were compared between patients with and without AF. Multivariable logistic regression and mediation analyses were performed to assess the relationship between AF and ICH. Of the total 245 patients, 123 patients were included in the AF group. After PSM, the AF group showed more retrieval attempts (P = 0.004), comparable favorable outcome (P =&thins...
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
Coronavirus disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), usually presents as a respiratory illness. Neurological manifestations can be seen in 36.4% of patients.1 Patients with vascular risk factors (VRFs), including history of stroke, tend to have worse prognosis.2 COVID-19 triggers a robust inflammatory response which leads to hypercoagulability and thromboembolism.3 Reports of stroke in patients with COVID-19 are mostly limited to small case series or case reports of ischemic stroke (IS), though intracerebral hemorrhage (ICH) and subarachnoid hemorrhage (SAH) have also been reported.
Source: Journal of Stroke and Cerebrovascular Diseases - Category: Neurology Authors: Source Type: research
AbstractObjectivesThe OVID study will demonstrate whether prophylactic-dose enoxaparin improves survival and reduces hospitalizations in symptomatic ambulatory patients aged 50 or older diagnosed with COVID-19, a novel viral disease characterized by severe systemic, pulmonary, and vessel inflammation and coagulation activation.Trial designThe OVID study is conducted as a multicentre open-label superiority randomised controlled trial.ParticipantsInclusion Criteria1. Signed patient informed consent after being fully informed about the study ’s background.2. Patients aged 50 years or older with a positive test for SARS-...
Source: Trials - Category: Research Source Type: clinical trials
This study aimed to evaluate the diagnostic value of serum S1P in acute stroke.Method: A total of 72 patients with ischemic stroke, 36 patients with hemorrhagic stroke, and 65 controls were enrolled. Serum S1P was detected by enzyme-linked immunosorbent assay (ELISA).Results: Receiver operating characteristic curve analysis demonstrated that serum S1P could discriminate ischemic stroke from hemorrhagic stroke in both total population and subgroup analyses of samples obtained within 24 h of symptom onset (subgroup
Source: Frontiers in Neurology - Category: Neurology Source Type: research
Conclusions: Lower serum magnesium levels in patients with ischemic stroke are associated with an increased risk of HT after intravenous thrombolysis, but perhaps only when serum magnesium is below a certain minimal concentration.
Source: Frontiers in Neurology - Category: Neurology Source Type: research
In conclusion, we demonstrated that stress hyperglycemia, as measured by the GAR index, is associated to worse outcome in AIS patients undergoing IVT.
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
CONCLUSIONS: Interventional neuroradiology can fill an important role in military far forward care as these providers can treat both traumatic and atraumatic cerebral and extracranial vascular injuries. In addition, knowledge and skill with vascular access and general interventional radiology principles can be used to aid in other lifesaving interventions. As interventional equipment becomes more available and portable, this relatively young specialty can alter the treatment for servicemen and women who are injured downrange. PMID: 32812042 [PubMed - as supplied by publisher]
Source: Military Medicine - Category: International Medicine & Public Health Tags: Mil Med Source Type: research
Abstract BACKGROUND: Surgical left atrial appendage occlusion (SLAAO) may be associated with a lower risk of thromboembolism in patients with atrial fibrillation undergoing cardiac surgery. However, evidence regarding the effectiveness of SLAAO in patients undergoing mechanical heart valve replacement (MHVR) is lacking. Therefore, we aimed to evaluate the association between SLAAO and the cardiovascular outcomes in patients with atrial fibrillation undergoing MHVR. METHODS: We retrospectively analyzed data for 497 patients with atrial fibrillation; 27.6% of the patients underwent SLAAO, and the remainder of t...
Source: Chinese Medical Journal - Category: General Medicine Authors: Tags: Chin Med J (Engl) Source Type: research
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