Incidence Of Cerebral Venous Thrombosis Research Articles

A rare incidence of cerebral venous thrombosis in a case of immune thrombocytopenia on eltrombopag

A rare incidence of cerebral venous thrombosis in a case of immune thrombocytopenia on eltrombopag

A Study of Cerebral Venous Sinus Thrombosis with Special Reference to Newer Risk Predictors.

Cerebral venous thrombosis (CVT) is an uncommon and frequently unrecognized type of stroke that affects approximately five people per million annually, accounts for 0.5 to 1% of all strokes, and is more commonly seen in young individuals. The exact incidence of CVT in India remains unknown. The risk factors for venous thrombosis in general are linked classically to the Virchow's triad of stasis of the blood, changes in the vessel wall, and changes in the composition of the blood. There have been numerous studies evaluating long-term as well as short-term outcomes in the presence of these inflammatory mediators. They have been reported to be beneficial in predicting outcome and, hence, potentially in guiding management. Evaluation of prevailing risk factors associated with cerebral venous sinus thrombosis (CVST). Description of the distribution of newer inflammatory markers among the study population and their association with functional and neurologic outcome at 30 days following the occurrence of cerebral VST. Approval from the Institutional Review Board was obtained. Written informed consent was given by willing patients, explained in vernacular. Relevant details were obtained via a clinical history and laboratory values and imaging data obtained from the hospital's electronic health information system, which were then recorded in the proforma. No personal identifying data was collected. The sample size for this study was lower than originally planned, owing to the coronavirus disease 2019 (COVID-19) pandemic. The patients were called for follow-up after 1 month of the detection of VST, and their neurologic status was recorded on the Glasgow Coma Scale (GCS) and functional status on the modified Rankin Scale (mRS). Descriptive analysis of baseline characteristics was done. Mann-Whitney U and Kruskal-Wallis H tests of significant difference between means for nonparametric data were used. Linear regression was carried out on the variables found to differ significantly among subpopulations having good and poor neurologic outcomes. Receiver operating characteristic (ROC) curves were then derived for both outcome categories. The study enrolled 30 patients, with ages from 18 to 70 years, of which 19 (63.3%) were male and 11 (36.67%) were female. No risk factor was identified in 23.3% of cases. The most common risk factor was the presence of substance abuse. Among presenting features, headaches were the most common, followed by seizures and focal neurologic deficits (83.3, 30, and 23.3, respectively). Coexisting intraparenchymal hemorrhage was seen in 46.67% of patients, with the transverse sinuses most commonly involved (28.77%). The median neutrophil-to-lymphocyte ratio (NLR) was 3.415 [interquartile range (IQR) 2.634-5.637], with median platelet-to-lymphocyte ratio (PLR) 160.728 (IQR 107.728-227.776) and median systemic immune-inflammation index (SII) 1067.883 (IQR 509.694-1522.837). The NLR, PLR, and SII values were found to differ significantly among subgroups having good and poor neurologic outcome on the mRS. PLR and SII significantly differed among subgroups with venous involvement and among subgroups with good and poor neurologic status on GCS, on admission as well as 30-day follow-up. NLR, PLR, and SII values on admission showed a positive association with poor neurologic outcomes. Here, a significant correlation is seen between the values of complete blood count (CBC)-derived inflammatory markers on admission. Higher-powered studies are needed to assess the potential benefits of incorporating these markers in existing risk stratification models to improve their predictive accuracy.

Cerebral Venous Thrombosis in Patients With Traumatic Brain Injury: Epidemiology and Outcome.

The natural history and epidemiological aspects of traumatic cerebral venous thrombosis (CVT) are not fully understood. Due to the concomitant occurrence with intracranial hemorrhages, guidelines for medical treatment have been highly controversial.In this study, our objective was to carry out an analysis description of the population and to conduct a literature review. A prospectively gathered radiology registry data of patients hospitalized at the tertiary hospital of Centro Hospitalar Universitário do São João, Porto, Portugal, between 2016 and 2021 was carried out. All patients with traumatic brain injury (TBI) and concomitant CVT were identified. CVT was confirmed by CT venogram. Demographic, clinical, and radiological data and their medical management were reported. In-hospital complications and treatment outcomes were compared between patients measured by the Glasgow Outcome Score Extended (GOSE) at discharge and GOSE at three months. There were 41 patients with traumatic CVT admitted to this study. The majority (45.2%) had a hyperdense signal near the lateral sinus at admission, and only 26.2% presented with skull fractures. Of this cohort, 95% had experienced lateral sinus thrombosis. Twenty-five patients (60%) had occlusive venous thrombosis. Venous infarct was the main complication following CVT.Thirty-two patients (78%) were anticoagulated after CVT and four developed complications. At the three-month follow-up after discharge, 28.2% had good recovery (GOSE > 6). This study revealed a higher incidence of CVT in severe TBI and a mild association with skull fractures. There is a higher incidence of CVT in the lateral sinus. Management was inconsistent, with no difference in outcome without or with anticoagulation. Larger, prospective cohort studies are required to better comprehend this condition and determine evidence-based guidelines.

Trends in cerebral venous thrombosis before and during the COVID-19 pandemic: Analysis of the National Inpatient Sample

ObjectivesWe sought to provide updated incidence and trend data for cerebral venous thrombosis (CVT) in the United States from 2016-2020, examine the impact of the COVID-19 pandemic on CVT, and identify predictors of in-hospital mortality. Materials and methodsValidated ICD-10 codes were used to identify discharges with CVT in the National Inpatient Sample (NIS). Sample weights were applied to generate nationally representative estimates, and census data were used to compute incidence rates. The first wave of the COVID-19 pandemic was defined as January-May 2020. Trend analysis was completed using Joinpoint regression. ResultsFrom 2016 to 2020, the incidence of CVT increased from 24.34 per 1,000,000 population per year (MPY) to 33.63 per MPY (Annual Percentage Change (APC) 8.6 %; p < 0.001). All-cause in-hospital mortality was 4.9 % [95 % CI 4.5-5.4]. On multivariable analysis, use of thrombectomy, increased age, atrial fibrillation, stroke diagnosis, infection, presence of prothrombotic hematologic conditions, lowest quartile of income, intracranial hemorrhage, and male sex were associated with in-hospital mortality. CVT incidence was similar comparing the first 5 months of 2020 and 2019 (31.37 vs 32.04; p = 0.322) with no difference in median NIHSS (2 [IQR 1-10] vs. 2 [1-9]; p = 0.959) or mortality (4.2 % vs. 5.6 %; p = 0.176). ConclusionsCVT incidence increased in the US from 2016 to 2020 while mortality did not change. Increased age, prothrombotic state, stroke diagnosis, infection, atrial fibrillation, male sex, lowest quartile of income, intracranial hemorrhage, and use of thrombectomy were associated with in-hospital mortality following CVT. During the first wave of the COVID-19 pandemic, CVT volumes and mortality were similar to the prior year.

Abstract WP260: Higher Incidence of Cerebral Venous Thrombosis Seen During the First Year of the COVID-19 Pandemic: Insights From the National Inpatient Sample

Background: Cerebral venous thrombosis (CVT) is associated with significant risk of death and disability. Prior research has found patients with COVID-19 had higher incidences of system venous and arterial thrombosis, however, there has been little research into its impact on incidence of CVT. Objective: Determine whether the incidence of CVT was higher during the first year of the COVID-19 pandemic. Methods: A cross-sectional study utilizing data from the National Inpatient Sample (NIS) was performed. Adult patients in 2018 (n=6,051,974) were compared to those in 2020 (n=5,470,813), the first year of the COVID-19 pandemic. To prevent potential confounding by undiagnosed COVID-19, patients in 2019 were not utilized in the analysis. ICD-10 codes were utilized to identify patients with CVT along with additional diagnoses, including COVID-19 infection. Odds ratios and 95% confidence intervals were calculated and compared using t-tests. Rates of CVT were also calculated. Results: There were 731 (weighted estimate for the US population n=3,655, rate of 13.4 cases per 100,000 admissions) patients with CVT in 2020, compared to 641 patients in 2018 (weighted n=3,205, rate of 10.6 per 100,000 admissions; p-value 0.003; cOR=1.26, 95% CI=1.08-1.47). Female patients had a higher incidence of CVT in both years (58.6% versus 62.5%) with no significant between year difference. No age or race difference was identified. Hospital mortality rate among CVT patients admitted in 2020 was 5%. Twelve patients were diagnosed with concurrent COVID-19 infections. Length of stay among CVT patients admitted in 2018 and 2020 was similar (7.89 versus 8.06 days). However, CVT patients with concurrent COVID-19 had a longer hospital stay than those without COVID-19 (18 versus 8 days; p-value&lt;0.001). Conclusions: There was a significantly higher incidence of CVT among hospitalized patients during the first year of the COVID-19 pandemic compared to 2018. This finding is consistent with the previously described higher rates of thrombotic disorders during the COVID-19 pandemic and should prompt further study.

Cerebral Venous Thrombosis in Pregnant and Postpartum Women Presenting to the Emergency Department with Headaches.

Cerebral venous thrombosis (CVT) is a thromboembolic disease of the intracranial venous systems. The disease can be difficult to diagnose as it often requires a high index of suspicion. Risk factors for the disease include pregnancy, oral contraceptive pills, congenital thrombophilia, infection, cancer, polycythemia, head trauma, and recent surgery. However, there have been no studies in the United States that have examined whether pregnancy and the postpartum stage are truly a risk factor for CVT. The aim of this study is to determine whether pregnant and postpartum women presenting to the emergency department with headaches have a higher incidence of CVT to better risk stratify which patients need to have advanced imaging pursued. A retrospective, observational case-control study was performing by querying the electronic medical record at a large county hospital for patients presenting with a headache to the emergency department. Patients were stratified into groups based on whether they were diagnosed with CVT, pregnancy status, and comorbid conditions to determine the risk associated between pregnancy, the puerperium stage, and CVT. A total of 20,955 males and females presented to the emergency department between January 1, 2016 and April 13, 2023, with a chief complaint of headache. There were 19,474 female patients and 9581 male patients. In the case group, there were 793 pregnant women and 53 postpartum women. In the control group, there were 18,628 women who were not pregnant. Of the 22 patients diagnosed with CVT, 1 was in the puerperium stage and no patients were pregnant. Pregnant and postpartum patients were 1.05 (0.14-7.80) times more likely to develop CVT. Pregnant and postpartum patients were 1.73 (0.23-13.52) times more likely to develop CVT when controlled for comorbidities. Patients in the puerperium stage were 26.48 (3.33-210.87) times more likely to develop CVT when controlled for comorbidities. Pregnant patients presenting to the emergency department with headaches do not have a significantly higher risk of CVT; however, puerperium patients have a significantly higher risk of CVT compared to the general population.

Abstract 131: Trends in Cerebral Venous Thrombosis: Analysis of the National Inpatient Sample 2016‐2020

Introduction Cerebral venous thrombosis (CVT) is an uncommon form of stroke with relatively low mortality but higher incidence in younger adults.1–3 Previous work has suggested decreased overall stroke hospitalization volumes, but preserved CVT hospitalization volumes and increased CVT mortality during the COVID‐19 pandemic.4,5 We sought to provide updated incidence and trend data for cerebral venous thrombosis (CVT) in the United States from 2016‐2020, examine the impact of the COVID‐19 pandemic on CVT, and identify predictors of in‐hospital mortality. Methods Validated ICD‐10 codes were used to identify patients with CVT in the National Inpatient Sample (NIS) between 2016 and 2020. The NIS is part of the Healthcare Cost and Utilization Project (HCUP) and is maintained the Agency for Healthcare Research and Quality. The NIS provides a stratified nationally representative 20% sample of all hospital discharges in the United States, excluding rehabilitation and long‐term acute care hospitals. Annual updates to the NIS are released approximately 20 months after the conclusion of the data year. Sample weights were applied to generate nationally representative estimates, and census data were used to compute incidence rates. The first wave of the COVID‐19 pandemic was defined as January‐May 2020. Predictor variables for mortality were selected based upon previous studies of incidence and outcomes of CVT and biological plausibility.6–8 Multivariable logistic regression was conducted using all predictor variables that achieved p&lt;0.10 in univariable regression. Trend analysis was completed using Joinpoint regression. Results From 2016 to 2020, the incidence of CVT increased from 24.34 per 1,000,000 population per year (MPY) to 33.63 per MPY (Annual Percentage Change (APC) 8.6%; p&lt;0.001). CVT incidence was higher in women than men (37.07 per MPY vs 30.10 per MPY) and the rate of increase was also higher in women (APC 10.1% vs APC 6.8%). Racial differences in incidence rate increases were noted, with incidence increasing by 9.8% annually for White patients, 16.1% for Black patients, and 6.7% for Hispanic patients. All‐cause in‐hospital mortality was 4.9% [95% CI 4.5‐5.4]. On multivariable analysis, use of thrombectomy, increased age, atrial fibrillation, stroke diagnosis, infection, presence of prothrombotic hematologic conditions, and male sex were associated with in‐hospital mortality. CVT incidence was similar comparing the first 5 months of 2020 and 2019 (31.37 vs 32.04; p=0.322) with no difference in median NIHSS (2 [IQR 1‐10] vs. 2 [1‐9]; p=0.959) or mortality (4.2% vs. 5.6%; p=0.176). Mortality was 6.7% [2.3‐17.9] in patients with both CVT and COVID (vs. no COVID 5.5% [4.6‐6.6]; p=0.705). Conclusion CVT incidence increased in the US from 2016 to 2020 while mortality did not change. CVT incidence was higher in women and Black patients. Increased age, prothrombotic state, stroke diagnosis, infection, atrial fibrillation, male sex, and use of thrombectomy were associated with in‐hospital mortality following CVT. During the first wave of the COVID‐19 pandemic, CVT volumes and mortality were similar to the prior year.

Expression and metabolism profiles of CVT associated with inflammatory responses and oxygen carrier ability in the brain.

As the main type of stroke, the incidence of cerebral venous thrombosis (CVT) has been rising. However, the comprehensive mechanisms behind it remain unclear. Thus, the multi-omics study is required to investigate the mechanism after CVT and elucidate the characteristic pathology of venous stroke and arterial stroke. Adult rats were subjected to CVT and MCAO models. Whole-transcriptome sequencing (RNA-seq) and untargeted metabolomics analysis were performed to construct the transcriptome and metabolism profiles of rat brains after CVT and also MCAO. The difference analysis, functional annotation, and enrichment analysis were also performed. Through RNA-seq analysis, differentially expressed genes (DEGs) were screened. 174 CVT specific genes including Il1a, Ccl9, Cxxl6, Tnfrsf14, etc., were detected. The hemoglobin genes, including both Hba and Hbb, were significantly downregulated after CVT, compared both to the MCAO and Sham groups. Metabolism analysis showed that CVT had higher heterogeneity of metabolism compared to MCAO. Metabolites including N-stearoyltyrosine, 5-methoxy-3-indoleaceate, Afegostat, pipecolic acid, etc. were specially regulated in CVT. Through the immune infiltration analysis, it was found that CVT had a higher immune response, with the abundance of certain types of immune cells increased, especially T helper cells. It was important to find the prevalence of the activation of inflammatory chemokine, cytokine, NOD-like pathway, and neutrophil extracellular trap. We explored and analyzed the gene expression and metabolomic characteristics of CVT, revealed the specific inflammatory reaction mechanism of CVT and found the markers in transcriptome and metabolism levels. It points out the direction for CVT early diagnosis and treatment.

Клинико-рентгенологические особенности церебральных венозных тромбозов на примере клинических случаев

Venous blood accounts for more than 80% of cerebral blood flow. At the same time, the incidence of cerebral venous thrombosis in patients with ischaemic stroke is only 3%. Cerebral venous thrombosis includes both sinus thrombosis and thrombosis of the cerebral veins themselves. The difficulty in diagnosing this condition may explain its low incidence. The clinical picture of cerebral venous thrombosis is similar to that of arterial infarction. Thrombosis of the cerebral sinuses can occur under the guise of a variety of conditions: subarachnoid haemorrhage, meningitis and even migraine or tension headache. It is therefore necessary to make a differential diagnosis between these nosologies. This article presents an analysis of cases of deep cerebral venous thrombosis and transverse sinus thrombosis. The analysis focuses on such features of the clinical picture as a pronounced hypertensive syndrome and the discrepancy between focal symptoms in cases of damage to the arterial and venous blood circulation areas. The results of x-ray computer and magnetic resonance tomography imaging are compared with literature data. In the case of transverse sinus lesions, blood testing for genetic and acquired hypercoagulability factors was performed. The article presents the results of the ultrasound examination of the cerebral veins, as well as an assessment of the dynamics of the patient's condition against the background of taking anticoagulant treatment for one year. After one year, magnetic resonance angiography showed recanalisation of the sinus. The cases presented highlight the need for more thorough investigation in patients with cerebral vascular pathology who present with an atypical clinical picture. It is essential that these investigations include a CT angiogram and a blood test to identify inherited and acquired thrombophilia factors.

Characteristics of cerebral venous thrombosis in patients from two university hospitals in Colombia between 2018-2020

Describir las características clínicas, demográficas y radiológicas, y los factores de riesgo de una serie de pacientes con trombosis venosa cerebral de dos hospitales de Colombia. Materiales y métodos. Es un estudio descriptivo retrospectivo de pacientes hospitalizados, atendidos en el servicio de neurología de dos hospitales de Bogotá desde diciembre de 2018 hasta diciembre del 2020. Se incluyeron 33 pacientes. Las frecuencias más altas correspondieron a mujeres en edad fértil, en puerperio (n=7; 33,3 %) y pacientes con patologías autoinmunes (n=10; 30,3 %). El síntoma inicial más común fue la cefalea (n=31; 93,9 %), seguido de focalización neurológica (n=9; 27,2%) y crisis epiléptica (n=8; 24,2 %). El 51 % (n=17) de los pacientes tuvo un examen físico normal. El infarto venoso cerebral se presentó en el 21,1 % (n=7), la hemorragia subaracnoidea en el 12,1 % (n=4) y el hematoma intraparenquimatoso en el 9 % (n=3) del total de pacientes. El 60,6 % (n=20) quedó con nivel independiente en la escala funcional de Barthel. Ningún paciente falleció. Se encontraron características sociodemográficas, clínicas y radiológicas similares a lo reportado en la literatura mundial. Con respecto a las diferencias, se encontró en nuestro estudio compromiso de la circulación venosa cerebral profunda en un porcentaje ligeramente mayor a lo descrito, pero sin aumento de complicaciones, ni mortalidad.

Incidence of Cerebral Venous Thrombosis: A Population-Based Study, Systematic Review, and Meta-Analysis.

Studying the baseline incidence of cerebral venous thrombosis (CVT) prior to COVID-19 and the limitations of how this has been previously reported in the literature will help improve understanding of this disease and how risks may have changed in the post-COVID era. We examined CVT incidence using linked administrative data in British Columbia, Canada (population 5.2 million). To contextualize our findings, we also examined CVT incidence in the published literature and searched MEDLINE and EMBASE for article titles and abstracts up to Nov 2, 2021 on CVT incidence in adults. We performed abstract screening and full-text review prior to data extraction and explored associations between CVT incidence and year of study, geographic location, and study quality with meta-analyses and meta-regression. A random-effects restricted maximum likelihood model was used. Publication bias was assessed using the Egger tests and using visual inspection of the funnel plot for symmetry. There were 554 unique CVT cases (mean age 50.9 years, 55.4% women) in British Columbia from 2000 to 2017; overall annual incidence was 8.7 (95%CI' 8.0-9.4) per million. Incidence increased over time in men across the entire study period, and from 2011 to 2017 in women. We identified 22 other studies on CVT incidence before 2020 (21/23 total studies included in meta-analysis). Annual incidence overall was 12.1 (95% CI' 9.9-14.3) per million with significant between-study heterogeneity (I2 98.8%, Qp-value<0.001). There were no significant associations on meta-regression between incidence and study year, study quality score, or gross national income per capita of the study country. Visual inspection of the funnel plot and a significant Egger test (z=2.8, P<0.01) suggested possible publication bias. Incidence of CVT in Canadian data increased over time but remained lower than in other population-based studies. Significant heterogeneity exists in the literature, which may be subject to publication bias.

Contemporary Incidence and Burden of Cerebral Venous Sinus Thrombosis in Children of the United States.

The incidence of cerebral venous thrombosis (CVT) in children of the United States is unknown, and it is uncertain how the burden of CVT hospitalizations in children changed over the last decade. We conducted a retrospective cohort study using the State Inpatient Database and Kid's inpatient database. All new CVT cases in children (0-19 years) in the New York 2006 to 2018 State Inpatient Database (n=705), and all cases of CVT in the entire US contained in the 2006 to 2019 Kid's inpatient database (weighted n=6115) were identified using validated International Classification of Diseases (ICDs) codes. Incident counts were combined with census data to compute incidence. Between-group differences in incidence were tested using 2-proportions Z-test, and Joinpoint regression was used to trend incidence over time. Across the study period, 48.2% of all incident CVT cases and 44.6% of all CVT admissions nationally were in girls. Of all incident cases, 27.2% were infants and 65.8% of these infants were neonates. Average incidence across the study period was (1.1/100 000/year, SE:0.04) but incidence in infants (6.4/100 000/year) was at least 5 times the incidence in other age groups (1-4 years: 0.7/100 000/year, 15-19 years: 1.2/100 000/year). Incidence and national burden of CVT admissions was higher in girls in adolescents 15 to 19 years, but overall burden was higher in boys in other age groups. Age- and sex-standardized CVT incidence increased by 3.8% annually (95% CI, 0.2%-7.6%), while the overall burden of admissions increased by 4.9% annually (95% CI, 3.6%-6.2%). CVT incidence in New York and national burden of CVT increased significantly over the last decade.

Literature Commentary

Welcome to a new era in "Lit Commentary!" I want to thank Tariq Bhatti for the past years of partnering with me in this endeavor. It has been a pleasure to collaborate with him. We now welcome 2 new colleagues to Lit Commentary, Deborah I. Friedman and Marc J. Dinkin, who will work along with me. This is our first "Rodeo" together and you can see we all have different approaches to our reviews. We look forward to finding our groove and get in to some appropriate banter as we ride along! -Mark L. Moster, MD. In this issue of JNO Drs. Marc J. Dinkin, Deborah I. Friedman and Mark L. Moster discuss the following 6 articles: Tu TM, Yi SJ, Koh JS, Saffari SE, Hoe RHM, Chen GJ, Chiew HJ, Tham CH, Seet CYH, Yong MH, Yong KP, Hui AC, Fan BE, Tan BY, Quek AML, Seet RCS, Yeo LLL, Tan K, Thirugnanam UN. Incidence of cerebral venous thrombosis following SARS-CoV-2 infection vs mRNA SARS-CoV-2 vaccination in Singapore. JAMA Netw Open. 2022;5:e222940.Douglas RS, Dailey R, Subramanian PS, Barbesino G, Ugradar S, Batten R, Qadeer RA, Cameron C. Proptosis and diplopia response with teprotumumab and placebo vs the recommended treatment regimen with intravenous methylprednisolone in moderate-to-severe thyroid eye disease: a meta-analysis and matching-adjusted indirect comparison. JAMA Ophthalmol. 2022;140:328-335.Mikolajczyk B, Ritter A, Larson C, Connett J, Olson J, McClelland C, Lee MS. Red desaturation prevalence and severity in healthy patients. Neurol Clin Pract. 2022;12:1-5.Landau Prat D, Liu GT, Avery RA, Ying GS, Chen Y, Tomlinson LA, Revere KE, Katowitz JA, Katowitz WR. Recovery of vision after optic nerve sheath fenestration in children and adolescents with elevated intracranial pressure. Am J Ophthalmol. 2021;237:173-182.Hummert MW, Schoppe LM, Bellmann-Strobl J, Siebert N, Paul F, Duchow A, Pellkofer H, Kümpfel T, Havla J, Jarius S, Wildemann B, Berthele A, Bergh FT, Pawlitzki M, Klotz L, Kleiter I, Stangel M, Gingele S, Weber MS, Faiss JH, Pul R, Walter A, Zettl UK, Senel M, Stellmann J-P, Häußler V, Hellwig K, Ayzenberg I, Aktas O, Ringelstein M, Schreiber-Katz O, Trebst C; on behalf of the Neuromyelitis Optica Study Group (NEMOS). Costs and health-related quality of life in patients with NMO spectrum disorders and MOG-antibody-associated disease: CHANCENMO study. Neurology. 2022;98:e1184-e1196.Pineles SL, Henderson RJ, Repka MX, Heidary G, Liu GT, Waldman AT, Borchert MS, Khanna S, Graves JS, Collinge JE, Conley JA, Davis PL, Kraker RT, Cotter SA, Holmes JM; Pediatric Eye Disease Investigator Group. The pediatric optic neuritis prospective outcomes study-two-year results. Ophthalmology. 2022:S0161-6420(22)00234-2. doi: 10.1016/j.ophtha.2022.03.021. Epub ahead of print. PMID: 35364222.

Global Impact of the COVID-19 Pandemic on Cerebral Venous Thrombosis and Mortality.

Background and Purpose Recent studies suggested an increased incidence of cerebral venous thrombosis (CVT) during the coronavirus disease 2019 (COVID-19) pandemic. We evaluated the volume of CVT hospitalization and in-hospital mortality during the 1st year of the COVID-19 pandemic compared to the preceding year. Methods We conducted a cross-sectional retrospective study of 171 stroke centers from 49 countries. We recorded COVID-19 admission volumes, CVT hospitalization, and CVT in-hospital mortality from January 1, 2019, to May 31, 2021. CVT diagnoses were identified by International Classification of Disease-10 (ICD-10) codes or stroke databases. We additionally sought to compare the same metrics in the first 5 months of 2021 compared to the corresponding months in 2019 and 2020 (ClinicalTrials.gov Identifier: NCT04934020). Results There were 2,313 CVT admissions across the 1-year pre-pandemic (2019) and pandemic year (2020); no differences in CVT volume or CVT mortality were observed. During the first 5 months of 2021, there was an increase in CVT volumes compared to 2019 (27.5%; 95% confidence interval [CI], 24.2 to 32.0; P<0.0001) and 2020 (41.4%; 95% CI, 37.0 to 46.0; P<0.0001). A COVID-19 diagnosis was present in 7.6% (132/1,738) of CVT hospitalizations. CVT was present in 0.04% (103/292,080) of COVID-19 hospitalizations. During the first pandemic year, CVT mortality was higher in patients who were COVID positive compared to COVID negative patients (8/53 [15.0%] vs. 41/910 [4.5%], P=0.004). There was an increase in CVT mortality during the first 5 months of pandemic years 2020 and 2021 compared to the first 5 months of the pre-pandemic year 2019 (2019 vs. 2020: 2.26% vs. 4.74%, P=0.05; 2019 vs. 2021: 2.26% vs. 4.99%, P=0.03). In the first 5 months of 2021, there were 26 cases of vaccine-induced immune thrombotic thrombocytopenia (VITT), resulting in six deaths. Conclusions During the 1st year of the COVID-19 pandemic, CVT hospitalization volume and CVT in-hospital mortality did not change compared to the prior year. COVID-19 diagnosis was associated with higher CVT in-hospital mortality. During the first 5 months of 2021, there was an increase in CVT hospitalization volume and increase in CVT-related mortality, partially attributable to VITT.

Incidence of Cerebral Venous Thrombosis Following SARS-CoV-2 Infection vs mRNA SARS-CoV-2 Vaccination in Singapore

Reports of cerebral venous thrombosis (CVT) after messenger RNA (mRNA)-based SARS-CoV-2 vaccination has caused safety concerns, but CVT is also known to occur after SARS-CoV-2 infection. Comparing the relative incidence of CVT after infection vs vaccination may provide a better perspective of this complication. To compare the incidence rates and clinical characteristics of CVT following either SARS-CoV-2 infection or mRNA-based SARS-CoV-2 vaccines. Between January 23, 2020, and August 3, 2021, this observational cohort study was conducted at all public acute hospitals in Singapore, where patients hospitalized with CVT within 6 weeks of SARS-CoV-2 infection or after mRNA-based SARS-CoV-2 vaccination (BNT162b2 [Pfizer-BioNTech] or mRNA-1273 [Moderna]) were identified. Diagnosis of SARS-CoV-2 infection was based on quantitative reverse transcription-polymerase chain reaction or positive serology. National SARS-CoV-2 infection data were obtained from the National Centre for Infectious Disease, Singapore, and vaccination data were obtained from the National Immunisation Registry, Singapore. SARS-CoV-2 infection or mRNA-based SARS-CoV-2 vaccines. Clinical characteristics, crude incidence rate (IR), and incidence rate ratio (IRR) of CVT after SARS-CoV-2 infection and after mRNA SARS-CoV-2 vaccination. Among 62 447 individuals diagnosed with SARS-CoV-2 infections included in this study, 58 989 (94.5%) were male; the median (range) age was 34 (0-102) years; 6 CVT cases were identified (all were male; median [range] age was 33.5 [27-40] years). Among 3 006 662 individuals who received at least 1 dose of mRNA-based SARS-CoV-2 vaccine, 1 626 623 (54.1%) were male; the median (range) age was 50 (12-121) years; 9 CVT cases were identified (7 male individuals [77.8%]; median [range] age: 60 [46-76] years). The crude IR of CVT after SARS-CoV-2 infections was 83.3 per 100 000 person-years (95% CI, 30.6-181.2 per 100 000 person-years) and 2.59 per 100 000 person-years (95% CI, 1.19-4.92 per 100 000 person-years) after mRNA-based SARS-CoV-2 vaccination. Six (66.7%) received BNT162b2 (Pfizer-BioNTech) vaccine and 3 (33.3%) received mRNA-1273 (Moderna) vaccine. The crude IRR of CVT hospitalizations with SARS-CoV-2 infection compared with those who received mRNA SARS-CoV-2 vaccination was 32.1 (95% CI, 9.40-101; P < .001). The incidence rate of CVT after SARS-CoV-2 infection was significantly higher compared with after mRNA-based SARS-CoV-2 vaccination. CVT remained rare after mRNA-based SARS-CoV-2 vaccines, reinforcing its safety.

Diagnostics of cerebral venous thrombosis associated with COVID-19 in young adults: clinical characteristics and imaging patterns

Introduction. Cerebral venous thrombosis (CVT) is relatively rare, but leads to the development of cerebral venous infarction, intracranial hemorrhage, followed by severe disability and death. Due to the epidemiological situation caused by COVID-19, the incidence of CVT is increasing.Aims and objectives: to analyze clinical, laboratory instrumental and neuroimaging (multislice computed tomography (MSCT), MSCT — with intravenous contrast, magnetic resonance imaging of the brain (MRI) and MRI venography) data that confirmed the development of CVT in patients with COVID-19.Methods. Data of 5 young adults with cerebral venous thrombosis (CVT) associated with COVID-19 are presented.Results. Аmong 5 reported cases of COVID-19, two patients presented with venous infarcts (hemorrhagic and ischemic), 3 patients developed encephalopathy syndrome without acute cerebral infarction.Conclusion. Possibilities of modern imaging technologies permitted to timely diagnosis cerebral venous thrombosis associated with COVID-19, that can lead to immediate initiation of therapy and to prevent the development of cerebrovascular complications during the COVID-19 pandemic.

Association of cerebral venous thrombosis with recent COVID-19 vaccination: case-crossover study using ascertainment through neuroimaging in Scotland

BackgroundTo investigate the association of primary acute cerebral venous thrombosis (CVT) with COVID-19 vaccination through complete ascertainment of all diagnosed CVT in the population of Scotland.MethodsCase-crossover study comparing cases of CVT recently exposed to vaccination (1–14 days after vaccination) with cases less recently exposed. Cases in Scotland from 1 December 2020 were ascertained through neuroimaging studies up to 17 May 2021 and diagnostic coding of hospital discharges up to 28 April 2021, linked to national vaccination records. The main outcome measure was primary acute CVT.ResultsOf 50 primary acute CVT cases, 29 were ascertained only from neuroimaging studies, 2 were ascertained only from hospital discharges, and 19 were ascertained from both sources. Of these 50 cases, 14 had received the Astra-Zeneca ChAdOx1 vaccine and 3 the Pfizer BNT162b2 vaccine. The incidence of CVT per million doses in the first 14 days after vaccination was 2.2 (95% credible interval 0.9 to 4.1) for ChAdOx1 and 1 (95% credible interval 0.1 to 2.9) for BNT162b2. The rate ratio for CVT associated with exposure to ChAdOx1 in the first 14 days compared with exposure 15-84 days after vaccination was 3.2 (95% credible interval 1.1 to 9.5).ConclusionsThese findings support a causal association between CVT and the AstraZeneca vaccine. The absolute risk of post-vaccination CVT in this population-wide study in Scotland was lower than has been reported for populations in Scandinavia and Germany; the explanation for this is not clear.

Cerebral Venous Thrombosis and Myeloproliferative Neoplasms: A Three-Center Study of 74 Consecutive Cases

▪BackgroundThe recent association of cerebral venous thrombosis (CVT) with COVID-19 vaccinations (JAMA; 2021; 325, N Engl J Med 2021; 384) motivated the current review of CVT and MPN. Our objectives were, i) provide an estimation of the incidence of CVT in the context of MPN, followed by a description of clinical phenotype and therapeutic strategies, ii) determine long term outlook in terms of recurrent thromboses, hemorrhage, and survival, iii) identify salient features which distinguish MPN associated from COVID vaccine- related CVT.Methods74 consecutive MPN patients with CVT that underwent evaluation at the Mayo Clinic, Rochester MN, USA (n=36), Catholic University, Rome, Italy, (n=23), and University of Florence, Italy (n=15) between 1991 and 2021 were included. The cohort from a previously published multi-center study that included 42 MPN cases with CVT, which were not included in the current study, was used for comparison of observations. Diagnosis of CVT was established with computed tomography or magnetic resonance imaging with venography.Results •Patient characteristics at time of CVTAmong 74 patients with CVT and MPN (median age 44 years, range 15-85; 61% females); disease-specific frequencies were 1.3% (39/2,893), 1.2% (21/1,811) and 0.2% (3/1,888) for essential thrombocythemia (ET), polycythemia vera (PV) and primary myelofibrosis (PMF), respectively.CVT occurred prior to (n=20, 27%, median time to MPN diagnosis 16.5 months), at (n=32, 44%) or after (n=21, 29%, median time to CVT 26 months) MPN diagnosis. 72% of patients presented with headaches, 22% visual changes, 12% nausea/vomiting, 8% neurological deficits, and 6% seizures. Transverse (51%), sagittal (43%) and sigmoid (35%) sinuses were involved with central nervous system hemorrhage in 10 (14%) patients.MPN phenotype included ET (n=39, 53%), PV (n=21, 28%), pre-fibrotic MF (n=6, 8%), MPN-unclassified (n=4, 5%), PMF (n=3, 4%) and post-PV MF (n=1, 1%). Driver mutation testing was performed in 65 patients: 91% harbored JAK2V617F, 3% CALR type 1, 2% MPL, 5% triple negative; moreover, JAK2V617F was mutated in 27/33 (82%) ET patients. An underlying thrombophilia was identified in 19 (31%) cases. No patient had thrombocytopenia. (Table 1). Notably, one patient received the Ad26.COV2.S vaccine, five days prior to presenting with CVT, not associated with thrombosis in other sites, thrombocytopenia or platelet factor 4 antibodies. A history of thrombosis was documented in 10 (14%) patients with three splanchnic venous events. These observations were similar to those noted in our comparative group from a previously published report that included 42 cases; (ET (n=25, 60%), PV (n=11, 26%), PMF (n=5, 12%); median age 51 years, range 16-84; 55% females; 81% JAK2V617F mutated). Prior thrombosis occurred in 8(19%) patients with four splanchnic venous events.Treatment for CVT included systemic anticoagulation alone in 27 (36%) patients or in conjunction with aspirin (n=24, 32%), cytoreductive therapy (n=14, 19%), or both aspirin and cytoreduction (n=9, 12%). 5/21 (24%) patients with CVT post MPN diagnosis, were on anticoagulation at the time of CVT.1.Outcome following CVTAt a median follow-up of 5.1 years (range; 0.1-28.6), recurrent CVT was documented in 3 (4%) patients; incidence rates for other arterial and venous thromboses and hemorrhage were 11% (2 per 100 patient-years), 9% (1.9 per 100 patient-years) and 14% (3 per 100 patient-years), respectively. 3 of 7 (43%) venous thromboses were splanchnic events. Antithrombotic therapy was ongoing in 53% and 80% of patients with thrombotic recurrences and hemorrhage, respectively. A higher incidence of venous thrombosis was noted in the aforementioned previously published cohort (12 (29%) vs 7 (9%), p=0.01); with 5/12 (42%) splanchnic events. Incidence rates for arterial thrombosis and major hemorrhage were similar. Fibrotic and leukemic transformation occurred in 5 (8%) and 1(1%) patient, respectively, with five (7%) deaths unrelated to CVT.ConclusionsThe current study highlights close association of CVT with JAK2V617F, younger age, and female gender. Clinical features distinguishing COVID vaccine-related from MPN-associated CVT include lower likelihood of concomitant non-CVT venous thromboses with the latter; moreover, the absence of thrombocytopenia resulted in a lower rate of intracerebral hemorrhage in MPN cases; as a result, MPN-CVT was not fatal. [Display omitted] DisclosuresVannucchi: AbbVie: Membership on an entity's Board of Directors or advisory committees; Incyte Corporation: Honoraria, Membership on an entity's Board of Directors or advisory committees; Bristol Myers Squibb: Honoraria, Membership on an entity's Board of Directors or advisory committees; Novartis: Honoraria, Membership on an entity's Board of Directors or advisory committees.

Cerebral venous thrombosis and portal vein thrombosis: A retrospective cohort study of 537,913 COVID-19 cases.

BackgroundThere are concerns about a link between the ChAdOx1 nCoV-19 and Ad26.COV2.S vaccines against COVID-19 and cerebral venous thrombosis (CVT) and other thrombotic events. One key missing component of the risk-benefit analysis of using such vaccines is the risk of these severe thrombotic events following COVID-19.MethodsUsing a retrospective cohort study based on electronic health records primarily in the USA, the absolute risks of CVT and portal vein thrombosis (PVT) in the two weeks following a diagnosis of COVID-19 (made between January 20, 2020 and March 25, 2021) were calculated. The risks were compared to cohorts of patients with influenza (diagnosed within the same period) and people receiving an mRNA vaccine (i.e. not the ChAdOx1 nCoV-19 and Ad26.COV2.S vaccines) against COVID-19 (matched for demographics and the main risk factors for CVT and PVT).FindingsA total of 537,913 patients with a COVID-19 diagnosis were included. The incidence of CVT in the two weeks after a COVID-19 diagnosis was 42.8 per million people (95% CI 28.5–64.2). This was significantly higher than in a matched cohort of people who received an mRNA vaccine (RR = 6.33, 95% CI 1.87–21.40, P = 0.00014) and patients with influenza (RR = 2.67, 95% CI 1.04–6.81, P = 0.031). The incidence of PVT after COVID-19 diagnosis was 392.3 per million people (95% CI 342.8–448.9). This was significantly higher than in a matched cohort of people who received an mRNA vaccine (RR=4.46, 95% CI 3.12–6.37, P < 0.0001) and patients with influenza (RR=1.43, 95% CI 1.10–1.88, P = 0.0094).

Cerebral Venous Thrombosis in COVID-19: A New York Metropolitan Cohort Study.

Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) infection is associated with hypercoagulability. We sought to evaluate the demographic and clinical characteristics of cerebral venous thrombosis among patients hospitalized for coronavirus disease 2019 (COVID-19) at 6 tertiary care centers in the New York City metropolitan area. We conducted a retrospective multicenter cohort study of 13,500 consecutive patients with COVID-19 who were hospitalized between March 1 and May 30, 2020. Of 13,500 patients with COVID-19, twelve had imaging-proved cerebral venous thrombosis with an incidence of 8.8 per 10,000 during 3 months, which is considerably higher than the reported incidence of cerebral venous thrombosis in the general population of 5 per million annually. There was a male preponderance (8 men, 4 women) and an average age of 49 years (95% CI, 36-62 years; range, 17-95 years). Only 1 patient (8%) had a history of thromboembolic disease. Neurologic symptoms secondary to cerebral venous thrombosis occurred within 24 hours of the onset of the respiratory and constitutional symptoms in 58% of cases, and 75% had venous infarction, hemorrhage, or both on brain imaging. Management consisted of anticoagulation, endovascular thrombectomy, and surgical hematoma evacuation. The mortality rate was 25%. Early evidence suggests a higher-than-expected frequency of cerebral venous thrombosis among patients hospitalized for COVID-19. Cerebral venous thrombosis should be included in the differential diagnosis of neurologic syndromes associated with SARS-CoV-2 infection.