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1.
Stroke ; 55(5): 1210-1217, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38487876

RESUMEN

BACKGROUND: Spontaneous intracerebral hemorrhage (ICH) in the cerebellum has a poor short-term prognosis, whereas data on the long-term case fatality and recurrent vascular events are sparse. Herewith, we aimed to assess the long-term case fatality and recurrence rate of vascular events after a first cerebellar ICH. METHODS: In this international cohort study, we included patients from 10 hospitals (the United States and Europe from 1997 to 2017) aged ≥18 years with a first spontaneous cerebellar ICH who were discharged alive. Data on long-term case fatality and recurrence of vascular events (recurrent ICH [supratentoria or infratentorial], ischemic stroke, myocardial infarction, or major vascular surgery) were collected for survival analysis and absolute event rate calculation. RESULTS: We included 405 patients with cerebellar ICH (mean age [SD], 72 [13] years, 49% female). The median survival time was 67 months (interquartile range, 23-100 months), with a cumulative survival rate of 34% at 10-year follow-up (median follow-up time per center ranged: 15-80 months). In the 347 patients with data on vascular events 92 events occurred in 78 patients, after initial cerebellar ICH: 31 (8.9%) patients had a recurrent ICH (absolute event rate, 1.8 per 100 patient-years [95% CI, 1.2-2.6]), 39 (11%) had an ischemic stroke (absolute event rate, 2.3 [95% CI, 1.6-3.2]), 13 (3.7%) had a myocardial infarction (absolute event rate, 0.8 [95% CI, 0.4-1.3]), and 5 (1.4%) underwent major vascular surgery (absolute event rate, 0.3 [95% CI, 0.1-0.7]). The median time to a first vascular event during follow-up was 27 months (interquartile range, 8.7-50 months), with a cumulative hazard of 47% at 10 years. CONCLUSIONS: The long-term prognosis of patients who survive a first spontaneous cerebellar ICH is poor and comparable to that of patients who survive a first supratentorial ICH. Further identification of patients at high risk of vascular events following the initial cerebellar ICH is needed. Including patients with cerebellar ICH in randomized controlled trials on secondary prevention of patients with ICH is warranted.

2.
Stroke ; 52(9): 2902-2909, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34126759

RESUMEN

Background and Purpose: The computed tomography angiography spot sign is associated with hematoma expansion, case fatality, and poor functional outcome in spontaneous supratentorial intracerebral hemorrhage (ICH). However, no data are available on the spot sign in spontaneous cerebellar ICH. Methods: We investigated consecutive patients with spontaneous cerebellar ICH at 3 academic hospitals between 2002 and 2017. We determined patient characteristics, hematoma expansion (>33% or 6 mL), rate of expansion, discharge and 90-day case fatality, and functional outcome. Poor functional outcome was defined as a modified Rankin Scale score of 4 to 6. Associations were tested using univariable and multivariable logistic regression. Results: Three hundred fifty-eight patients presented with cerebellar ICH, of whom 181 (51%) underwent a computed tomography angiography. Of these 181 patients, 121 (67%) were treated conservatively of which 15 (12%) had a spot sign. Patients with a spot sign treated conservatively presented with larger hematoma volumes (median [interquartile range]: 26 [7­41] versus 6 [2­13], P=0.001) and higher speed of expansion (median [interquartile range]: 15 [24­3] mL/h versus 1 [5­0] mL/h, P=0.034). In multivariable analysis, presence of the spot sign was independently associated with death at 90 days (odds ratio, 7.6 [95% CI, 1.6­88], P=0.037). With respect to surgically treated patients (n=60, [33%]), 14 (23%) patients who underwent hematoma evacuation had a spot sign. In these 60 patients, patients with a spot sign were older (73.5 [9.2] versus 66.6 [15.4], P=0.047) and more likely to be female (71% versus 37%, P=0.033). In a multivariable analysis, the spot sign was independently associated with death at 90 days (odds ratio, 2.1 [95% CI, 1.1­4.3], P=0.033). Conclusions: In patients with spontaneous cerebellar ICH treated conservatively, the spot sign is associated with speed of hematoma expansion, case fatality, and poor functional outcome. In surgically treated patients, the spot sign is associated with 90-day case fatality.


Asunto(s)
Enfermedades Cerebelosas/fisiopatología , Hemorragia Cerebral/fisiopatología , Angiografía por Tomografía Computarizada , Hematoma/fisiopatología , Anciano , Anciano de 80 o más Años , Enfermedades Cerebelosas/diagnóstico , Angiografía Cerebral/métodos , Hemorragia Cerebral/diagnóstico por imagen , Angiografía por Tomografía Computarizada/métodos , Femenino , Hematoma/diagnóstico por imagen , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Pronóstico , Tomografía Computarizada por Rayos X/métodos
3.
Neurocrit Care ; 35(3): 680-686, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-33650011

RESUMEN

BACKGROUND: In patients with spontaneous cerebellar intracerebral hemorrhage (ICH) guidelines advocate evacuation when the hematoma diameter is > 3 cm. We studied outcome in patients with cerebellar ICH > 3 cm who did not undergo immediate hematoma evacuation. METHODS: We included consecutive patients with cerebellar ICH > 3 cm at two academic hospitals between 2008 and 2017. Patients who died < 24 h (h) were excluded because of probable confounding by indication. We determined patient characteristics, hematoma volumes, EVD placement, secondary hematoma evacuation, in-hospital and 3-month case-fatality, and functional outcome. RESULTS: Of 130 patients with cerebellar ICH, 98 (77%) had a hematoma > 3 cm of whom 22 (23%) died < 24 h and 28 (29%) underwent hematoma evacuation < 24 h. Thus, 48 patients were initially treated conservatively (mean age 70 ± 13, 24 (50%) female). Of these 48 patients, 7 (15%) underwent secondary hematoma evacuation > 24 h, of whom 1 (14%) had received an EVD < 24 h. Five others also received an EVD < 24 h without subsequent hematoma evacuation. Of the 41 patients without secondary hematoma evacuation, 11 (28%) died and 20 (51%) had a favorable outcome (mRS of 0-3) at 3 months. The 7 patients who underwent secondary hematoma evacuation had a decrease in GCS score of at least two points prior to surgery; two (29%) had deceased at 3 months; and 5 (71%) had a good functional outcome (mRS 0-3). CONCLUSIONS: While cerebellar ICH > 3 cm is often considered an indication for immediate hematoma evacuation, there may be a subgroup of patients in whom surgery can be safely deferred. Further data are needed to assess the optimal timing and indications of surgical treatment in these patients.


Asunto(s)
Enfermedades Cerebelosas , Hematoma , Enfermedades Cerebelosas/complicaciones , Enfermedades Cerebelosas/cirugía , Cerebelo , Hemorragia Cerebral/complicaciones , Hemorragia Cerebral/cirugía , Femenino , Hematoma/etiología , Hematoma/cirugía , Humanos , Resultado del Tratamiento
4.
Neurocrit Care ; 32(2): 383-391, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-31845173

RESUMEN

BACKGROUND AND OBJECTIVE: The aim of this study was to evaluate the impact of radiographic cerebral small vessel disease (CSVD) on the severity of acute intracerebral hemorrhage (ICH) as measured by: ICH volume, hematoma expansion, and extension of intraventricular hemorrhage (IVH). METHODS: CSVD was determined on baseline computed tomography (CT) scans of patients from the Ethnic and Racial Variations of Intracerebral Hemorrhage study through the extent of leukoaraiosis and cerebral atrophy using visual rating scales. The associations of leukoaraiosis and atrophy with ICH volume, hematoma expansion, IVH presence, and severity of IVH were tested using multivariable regression models. Secondary analyses were stratified by hemorrhage location. Bonferroni correction was applied to correct for multiple testing. RESULTS: A total of 2579 patients (mean age 61.7 years, 59% male) met inclusion criteria. Median ICH volume was 10.5 (Interquartile range [IQR] 4.0-25.3) mL. IVH was detected in 971 patients (38%). Neither leukoaraiosis nor atrophy was associated with hematoma expansion. Increasing grades of leukoaraiosis were associated with increased risk of IVH in a dose-dependent manner, while cerebral atrophy was inversely associated with IVH (both P for trend < 0.001). Increasing grades of global atrophy were dose-dependently associated with lower ICH volumes (ß (95% Confidence Interval [CI]) - 0.30[- 0.46, - 0.14], - 0.33[- 0.49, - 0.17], - 0.40[- 0.60, - 0.20], and - 0.54[- 0.76, - 0.32], for grades 1, 2, 3 and 4 compared to 0; all P < 0.001). The associations of leukoaraiosis with ICH volume were consistent with those of atrophy, albeit not meeting statistical significance. CONCLUSIONS: Leukoaraiosis and cerebral atrophy appear to have opposing associations with ICH severity. Cerebral atrophy correlates with smaller ICH volume and decreased risk and severity of IVH, while leukoaraiosis is associated with increased risk of IVH. Whether these observations reflect overlapping or divergent underlying mechanisms requires further study.


Asunto(s)
Hemorragia Cerebral/diagnóstico por imagen , Hemorragia Cerebral Intraventricular/diagnóstico por imagen , Enfermedades de los Pequeños Vasos Cerebrales/diagnóstico por imagen , Hematoma/diagnóstico por imagen , Leucoaraiosis/diagnóstico por imagen , Anciano , Atrofia , Hemorragia Cerebral/epidemiología , Hemorragia Cerebral Intraventricular/epidemiología , Enfermedades de los Pequeños Vasos Cerebrales/epidemiología , Comorbilidad , Progresión de la Enfermedad , Femenino , Hematoma/epidemiología , Humanos , Leucoaraiosis/epidemiología , Masculino , Persona de Mediana Edad , Índice de Severidad de la Enfermedad
5.
Stroke ; 50(10): 2722-2728, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31446887

RESUMEN

Background and Purpose- In this study, we aim to investigate the association of computed tomography-based markers of cerebral small vessel disease with functional outcome and recovery after intracerebral hemorrhage. Methods- Computed tomographic scans of patients in the ERICH study (Ethnic and Racial Variations of Intracerebral Hemorrhage) were evaluated for the extent of leukoaraiosis and cerebral atrophy using visual rating scales. Poor functional outcome was defined as a modified Rankin Scale (mRS) of ≥3. Multivariable logistic and linear regression models were used to explore the associations of cerebral small vessel disease imaging markers with poor functional outcome at discharge and, as a measure of recovery, change in mRS from discharge to 90 days poststroke. Results- After excluding in-hospital deaths, data from 2344 patients, 583 (24.9%) with good functional outcome (mRS of 0-2) at discharge and 1761 (75.1%) with poor functional outcome (mRS of 3-5) at discharge, were included. Increasing extent of leukoaraiosis (P for trend, 0.01) and only severe (grade 4) global atrophy (odds ratio, 2.02; 95% CI, 1.22-3.39, P=0.007) were independently associated with poor functional outcome at discharge. Mean (SD) mRS change from discharge to 90-day follow-up was 0.57 (1.18). Increasing extent of leukoaraiosis (P for trend, 0.002) and severe global atrophy (ß [SE], -0.23 [0.115]; P=0.045) were independently associated with less improvement in mRS from discharge to 90 days poststroke. Conclusions- In intracerebral hemorrhage survivors, the extent of cerebral small vessel disease at the time of intracerebral hemorrhage is associated with poor functional outcome at hospital discharge and impaired functional recovery from discharge to 90 days poststroke.


Asunto(s)
Hemorragia Cerebral/complicaciones , Hemorragia Cerebral/patología , Enfermedades de los Pequeños Vasos Cerebrales/complicaciones , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recuperación de la Función , Estudios Retrospectivos , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/patología
6.
Am J Hum Genet ; 94(4): 511-21, 2014 Apr 03.
Artículo en Inglés | MEDLINE | ID: mdl-24656865

RESUMEN

Intracerebral hemorrhage (ICH) is the stroke subtype with the worst prognosis and has no established acute treatment. ICH is classified as lobar or nonlobar based on the location of ruptured blood vessels within the brain. These different locations also signal different underlying vascular pathologies. Heritability estimates indicate a substantial genetic contribution to risk of ICH in both locations. We report a genome-wide association study of this condition that meta-analyzed data from six studies that enrolled individuals of European ancestry. Case subjects were ascertained by neurologists blinded to genotype data and classified as lobar or nonlobar based on brain computed tomography. ICH-free control subjects were sampled from ambulatory clinics or random digit dialing. Replication of signals identified in the discovery cohort with p < 1 × 10(-6) was pursued in an independent multiethnic sample utilizing both direct and genome-wide genotyping. The discovery phase included a case cohort of 1,545 individuals (664 lobar and 881 nonlobar cases) and a control cohort of 1,481 individuals and identified two susceptibility loci: for lobar ICH, chromosomal region 12q21.1 (rs11179580, odds ratio [OR] = 1.56, p = 7.0 × 10(-8)); and for nonlobar ICH, chromosomal region 1q22 (rs2984613, OR = 1.44, p = 1.6 × 10(-8)). The replication included a case cohort of 1,681 individuals (484 lobar and 1,194 nonlobar cases) and a control cohort of 2,261 individuals and corroborated the association for 1q22 (p = 6.5 × 10(-4); meta-analysis p = 2.2 × 10(-10)) but not for 12q21.1 (p = 0.55; meta-analysis p = 2.6 × 10(-5)). These results demonstrate biological heterogeneity across ICH subtypes and highlight the importance of ascertaining ICH cases accordingly.


Asunto(s)
Hemorragia Cerebral/genética , Cromosomas Humanos Par 1 , Predisposición Genética a la Enfermedad , Estudio de Asociación del Genoma Completo , Estudios de Casos y Controles , Humanos , Sitios de Carácter Cuantitativo
7.
Ann Neurol ; 80(5): 730-740, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27717122

RESUMEN

OBJECTIVE: In observational epidemiologic studies, higher plasma high-density lipoprotein cholesterol (HDL-C) has been associated with increased risk of intracerebral hemorrhage (ICH). DNA sequence variants that decrease cholesteryl ester transfer protein (CETP) gene activity increase plasma HDL-C; as such, medicines that inhibit CETP and raise HDL-C are in clinical development. Here, we test the hypothesis that CETP DNA sequence variants associated with higher HDL-C also increase risk for ICH. METHODS: We performed 2 candidate-gene analyses of CETP. First, we tested individual CETP variants in a discovery cohort of 1,149 ICH cases and 1,238 controls from 3 studies, followed by replication in 1,625 cases and 1,845 controls from 5 studies. Second, we constructed a genetic risk score comprised of 7 independent variants at the CETP locus and tested this score for association with HDL-C as well as ICH risk. RESULTS: Twelve variants within CETP demonstrated nominal association with ICH, with the strongest association at the rs173539 locus (odds ratio [OR] = 1.25, standard error [SE] = 0.06, p = 6.0 × 10-4 ) with no heterogeneity across studies (I2 = 0%). This association was replicated in patients of European ancestry (p = 0.03). A genetic score of CETP variants found to increase HDL-C by ∼2.85mg/dl in the Global Lipids Genetics Consortium was strongly associated with ICH risk (OR = 1.86, SE = 0.13, p = 1.39 × 10-6 ). INTERPRETATION: Genetic variants in CETP associated with increased HDL-C raise the risk of ICH. Given ongoing therapeutic development in CETP inhibition and other HDL-raising strategies, further exploration of potential adverse cerebrovascular outcomes may be warranted. Ann Neurol 2016;80:730-740.


Asunto(s)
Hemorragia Cerebral/genética , Proteínas de Transferencia de Ésteres de Colesterol/genética , Predisposición Genética a la Enfermedad/genética , Adulto , Anciano , HDL-Colesterol/sangre , HDL-Colesterol/genética , Femenino , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple
8.
Stroke ; 47(10): 2511-6, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27601380

RESUMEN

BACKGROUND AND PURPOSE: Noncontrast computed tomographic (CT) hypodensities have been shown to be associated with hematoma expansion in intracerebral hemorrhage (ICH), but their impact on functional outcome is yet to be determined. We evaluated whether baseline noncontrast CT hypodensities are associated with poor clinical outcome. METHODS: We performed a retrospective review of a prospectively collected cohort of consecutive patients with primary ICH presenting to a single academic medical center between 1994 and 2016. The presence of CT hypodensities was assessed by 2 independent raters on the baseline CT. Unfavorable outcome was defined as a modified Rankin score >3 at 90 days. The associations between CT hypodensities and unfavorable outcome were investigated using uni- and multivariable logistic regression models. RESULTS: During the study period, 1342 patients presented with ICH and 800 met restrictive inclusion criteria (baseline CT available for review, and 90-day outcome available). Three hundred and four (38%) patients showed hypodensities on CT, and 520 (65%) patients experienced unfavorable outcome. In univariate analysis, patients with unfavorable outcome were more likely to demonstrate hypodensities (48% versus 20%; P<0.0001). After adjustment for age, admission Glasgow coma scale, warfarin use, intraventricular hemorrhage, baseline ICH volume, and location, CT hypodensities were found to be independently associated with an increase in the odds of unfavorable outcome (odds ratio 1.70, 95% confidence interval [1.10-2.65]; P=0.018). CONCLUSIONS: The presence of noncontract CT hypodensities at baseline independently predicts poor outcome and comes as a useful and widely available addition to our ability to predict ICH patients' clinical evolution.


Asunto(s)
Encéfalo/diagnóstico por imagen , Hemorragia Cerebral/diagnóstico por imagen , Anciano , Anciano de 80 o más Años , Angiografía Cerebral , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Pronóstico , Estudios Retrospectivos , Tomografía Computarizada por Rayos X
9.
Stroke ; 47(3): 695-700, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26846857

RESUMEN

BACKGROUND AND PURPOSE: Hematoma expansion after acute intracerebral hemorrhage is common and is associated with early deterioration and poor clinical outcome. The computed tomographic angiography (CTA) spot sign is a promising predictor of expansion; however, frequency and predictive values are variable across studies, possibly because of differences in onset-to-CTA time. We performed a patient-level meta-analysis to define the relationship between onset-to-CTA time and frequency and predictive ability of the spot sign. METHODS: We completed a systematic review for studies of CTA spot sign and hematoma expansion. We subsequently pooled patient-level data on the frequency and predictive values for significant hematoma expansion according to 5 predefined categorized onset-to-CTA times. We calculated spot-sign frequency both as raw and frequency-adjusted rates. RESULTS: Among 2051 studies identified, 12 met our inclusion criteria. Baseline hematoma volume, spot-sign status, and time-to-CTA were available for 1176 patients, and 1039 patients had follow-up computed tomographies for hematoma expansion analysis. The overall spot sign frequency was 26%, decreasing from 39% within 2 hours of onset to 13% beyond 8 hours (P<0.001). There was a significant decrease in hematoma expansion in spot-positive patients as onset-to-CTA time increased (P=0.004), with positive predictive values decreasing from 53% to 33%. CONCLUSIONS: The frequency of the CTA spot sign is inversely related to intracerebral hemorrhage onset-to-CTA time. Furthermore, the positive predictive value of the spot sign for significant hematoma expansion decreases as time-to-CTA increases. Our results offer more precise risk stratification for patients with acute intracerebral hemorrhage and will help refine clinical prediction rules for intracerebral hemorrhage expansion.


Asunto(s)
Angiografía Cerebral/tendencias , Hemorragia Cerebral/diagnóstico por imagen , Progresión de la Enfermedad , Hematoma/diagnóstico por imagen , Tomografía Computarizada por Rayos X/tendencias , Angiografía Cerebral/métodos , Hemorragia Cerebral/epidemiología , Hematoma/epidemiología , Humanos , Valor Predictivo de las Pruebas , Factores de Tiempo , Tomografía Computarizada por Rayos X/métodos
10.
Neurocrit Care ; 25(1): 110-6, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-26842718

RESUMEN

BACKGROUND AND PURPOSE: In patients with intracerebral hemorrhage (ICH), it is not clear if hypernatremia is merely a marker of disease severity or if elevated sodium levels are harmful. We hypothesized that hypernatremia at hospital discharge in primary ICH patients would be associated with increased mortality following discharge. METHODS: We performed a two-center observational study of critically ill ICH patients in Boston. We studied 5100 patients, age ≥18 years, who were diagnosed with ICH (ICD-9 code 431), received medical or surgical critical care between 1997 and 2011 and survived hospitalization. The exposure of interest was serum sodium within 24 h of hospital discharge, categorized as Na ≤ 145 mmol/L and Na > 145 mmol/L. The primary outcome was 30-day post-discharge mortality. Odds ratios were estimated by logistic regression models adjusted for age, race, gender, Deyo-Charlson Index, patient type (medical versus surgical) and sepsis. RESULTS: In ICH patients who received critical care and survived hospitalization, the serum sodium at discharge was a predictor of post-discharge mortality. Patients with a discharge Na > 145 mmol/L have an OR for mortality in the 30 days following hospital discharge of 1.82 (95 %CI 1.38-2.38; P < 0.001) and an adjusted OR of 1.87 (95 %CI 1.40-2.48; P < 0.001) both relative to patients with a discharge Na ≤ 145 mmol/L. The adjusted model showed good discrimination AUC 0.77 (95 %CI 0.74-0.79) and calibration (Hosmer-Lemeshow χ (2) P = 0.68). CONCLUSIONS: In critically ill ICH patients who survive hospitalization, hypernatremia at the time of discharge is a robust predictor of post-discharge mortality.


Asunto(s)
Hemorragia Cerebral/sangre , Hemorragia Cerebral/mortalidad , Hipernatremia/sangre , Evaluación de Resultado en la Atención de Salud , Anciano , Anciano de 80 o más Años , Hemorragia Cerebral/terapia , Cuidados Críticos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Alta del Paciente
11.
Neurocrit Care ; 25(1): 79-85, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-26759226

RESUMEN

BACKGROUND AND PURPOSE: The computed tomography angiography (CTA) spot sign is a validated predictor of hematoma expansion and poor outcome in supratentorial intracerebral hemorrhage (ICH), but patients with brainstem ICH have typically been excluded from the analyses. We investigated the frequency of spot sign and its relationship with hematoma expansion and outcome in patients with primary pontine hemorrhage (PPH). METHODS: We performed a retrospective analysis of PPH cases obtained from a prospectively collected cohort of consecutive ICH patients who underwent CTA. CTA first-pass readings for spot sign presence were analyzed by two trained readers. Baseline and follow-up hematoma volumes on non-contrast CT scans were assessed by semi-automated computer-assisted volumetric analysis. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), positive and negative likelihood ratio, and accuracy of spot sign for prediction of in-hospital mortality were calculated. RESULTS: 49 subjects met the inclusion criteria of whom 11 (22.4 %) showed a spot sign. In-hospital mortality was higher in spot sign-positive versus spot sign-negative subjects (90.9 vs 47.4 %, p = 0.020). Spot sign showed excellent specificity (95 %) and PPV (91 %) in predicting in-hospital mortality. Absolute hematoma growth, defined as parenchymal and intraventricular hematoma expansion of any amount, was significantly higher in spot sign-positive versus spot sign-negative subjects (13.72 ± 20.93 vs 3.76 ± 8.55 mL, p = 0.045). CONCLUSIONS: As with supratentorial ICH, the CTA spot sign is a common finding and is associated with higher risk of hematoma expansion and mortality in PPH. This marker may assist clinicians in prognostic stratification.


Asunto(s)
Angiografía por Tomografía Computarizada/normas , Hematoma/diagnóstico por imagen , Hematoma/patología , Mortalidad Hospitalaria , Hemorragias Intracraneales/diagnóstico por imagen , Hemorragias Intracraneales/patología , Puente/diagnóstico por imagen , Puente/patología , Anciano , Estudios de Cohortes , Angiografía por Tomografía Computarizada/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Sensibilidad y Especificidad
12.
Stroke ; 46(9): 2498-503, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26243220

RESUMEN

BACKGROUND AND PURPOSE: In primary intracerebral hemorrhage, the presence of contrast extravasation after computed tomographic angiography (CTA), termed the spot sign, predicts hematoma expansion and mortality. Because the biological underpinnings of the spot sign are not fully understood, we investigated whether the rate of contrast extravasation, which may reflect the rate of bleeding, predicts expansion and mortality beyond the simple presence of the spot sign. METHODS: Consecutive intracerebral hemorrhage patients with first-pass CTA followed by a 90-second delayed postcontrast CT (delayed CTA) were included. CTAs were reviewed for spot sign presence by 2 blinded readers. Spot sign volumes on first-pass and delayed CTA and intracerebral hemorrhage volumes were measured using semiautomated software. Extravasation rates were calculated and tested for association with hematoma expansion and mortality using uni- and multivariable logistic regressions. RESULTS: One hundred and sixty-two patients were included, 48 (30%) of whom had ≥1 spot sign. Median spot sign volume was 0.04 mL on first-pass CTA and 0.4 mL on delayed CTA. Median extravasation rate was 0.23 mL/min overall and 0.30 mL/min among expanders versus 0.07 mL/min in nonexpanders. Extravasation rates were also significantly higher in patients who died in hospital: 0.27 mL/min versus 0.04 mL/min. In multivariable analysis, the extravasation rate was independently associated with in-hospital mortality (odds ratio, 1.09 [95% confidence interval, 1.04-1.18], P=0.004), 90-day mortality (odds ratio, 1.15 [95% confidence interval, 1.08-1.27]; P=0.0004), and hematoma expansion (odds ratio, 1.03 [95% confidence interval, 1.01-1.08]; P=0.047). CONCLUSIONS: Contrast extravasation rate, or spot sign growth, further refines the ability to predict hematoma expansion and mortality. Our results support the hypothesis that the spot sign directly measures active bleeding in acute intracerebral hemorrhage.


Asunto(s)
Angiografía Cerebral/métodos , Hemorragia Cerebral/diagnóstico por imagen , Hemorragia Cerebral/mortalidad , Hematoma/diagnóstico por imagen , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Progresión de la Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Método Simple Ciego , Tomografía Computarizada por Rayos X
13.
Stroke ; 45(11): 3293-7, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25300974

RESUMEN

BACKGROUND AND PURPOSE: The computed tomography angiography (CTA) spot sign is a validated biomarker for poor outcome and hematoma expansion in intracerebral hemorrhage. The spot sign has proven to be a dynamic entity, with multimodal imaging proving to be of additional value. We investigated whether the addition of a 90-second delayed CTA acquisition would capture additional intracerebral hemorrhage patients with the spot sign and increase the sensitivity of the spot sign. METHODS: We prospectively enrolled consecutive intracerebral hemorrhage patients undergoing first pass and 90-second delayed CTA for 18 months at a single academic center. Univariate and multivariate logistic regression were performed to assess clinical and neuroimaging covariates for relationship with hematoma expansion and mortality. RESULTS: Sensitivity of the spot sign for hematoma expansion on first pass CTA was 55%, which increased to 64% if the spot sign was present on either CTA acquisition. In multivariate analysis the spot sign presence was associated with significant hematoma expansion: odds ratio, 17.7 (95% confidence interval, 3.7-84.2; P=0.0004), 8.3 (95% confidence interval, 2.0-33.4; P=0.004), and 12.0 (95% confidence interval, 2.9-50.5; P=0.0008) if present on first pass, delayed, or either CTA acquisition, respectively. Spot sign presence on either acquisitions was also significant for mortality. CONCLUSIONS: We demonstrate improved sensitivity for predicting hematoma expansion and poor outcome by adding a 90-second delayed CTA, which may enhance selection of patients who may benefit from hemostatic therapy.


Asunto(s)
Hemorragia Cerebral/diagnóstico por imagen , Hemorragia Cerebral/mortalidad , Hematoma/diagnóstico por imagen , Hematoma/mortalidad , Tomografía Computarizada por Rayos X/normas , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos , Factores de Tiempo , Tomografía Computarizada por Rayos X/métodos
14.
Stroke ; 45(6): 1833-5, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24876264

RESUMEN

BACKGROUND AND PURPOSE: Patients with intracerebral hemorrhage (ICH) who present with a spot sign on computed tomography angiography are at increased risk of hematoma expansion and poor outcome. Because primary ICH is the acute manifestation of chronic cerebral small vessel disease, we investigated whether different clinical or imaging characteristics predict spot sign presence, using ICH location as a surrogate for arteriolosclerosis- and cerebral amyloid angiopathy-related ICH. METHODS: Patients with primary ICH and available computed tomography angiography at presentation were included. Predictors of spot sign were assessed using uni- and multivariable regression, stratified by ICH location. RESULTS: Seven hundred forty-one patients were eligible, 335 (45%) deep and 406 (55%) lobar ICH. At least one spot sign was present in 76 (23%) deep and 102 (25%) lobar ICH patients. In multivariable regression, warfarin (odds ratio [OR], 2.42; 95% confidence interval [CI], 1.01-5.71; P=0.04), baseline ICH volume (OR, 1.20; 95% CI, 1.09-1.33, per 10 mL increase; P<0.001), and time from symptom onset to computed tomography angiography (OR, 0.89; 95% CI, 0.80-0.96, per hour; P=0.009) were associated with the spot sign in deep ICH. Predictors of spot sign in lobar ICH were warfarin (OR, 3.95; 95% CI, 1.87-8.51; P<0.001) and baseline ICH volume (OR, 1.20; 95% CI, 1.10-1.31, per 10 mL increase; P<0.001). CONCLUSIONS: The most potent associations with spot sign are shared between deep and lobar ICH, suggesting that the acute bleeding process that arises in the setting of different chronic small vessel diseases shares commonalities.


Asunto(s)
Anticoagulantes/administración & dosificación , Angiografía Cerebral , Hemorragia Cerebral/diagnóstico por imagen , Hemorragia Cerebral/tratamiento farmacológico , Tomografía Computarizada por Rayos X , Warfarina/administración & dosificación , Femenino , Humanos , Masculino , Factores de Riesgo
15.
Stroke ; 45(4): 1154-6, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24603066

RESUMEN

BACKGROUND AND PURPOSE: We sought to identify baseline determinants of the anatomic pattern of hematoma expansion in patients with intracerebral hemorrhage and spot sign. METHODS: We coregistered baseline and follow-up CT scans from 15 intracerebral hemorrhage patients and measured growth at each surface node from baseline to follow-up hematoma. We analyzed the effects of proximity to the spot sign or hematoma center on distance of expansion, controlling for covariates. RESULTS: There was substantial node-to-node variation in the extent of expansion around each hematoma surface (mean coefficient of variation for expansion distance, 0.43; 95% confidence interval, 0.39-0.48), indicating nonuniform expansion. Closer proximity to the hematoma center was independently associated with increased expansion (0.185 mm greater expansion for each 1 mm closer to the center; P<0.0001). Closer proximity to the spot sign was not independently associated with increased expansion in models including both terms. CONCLUSIONS: Hemorrhages expand nonuniformly around their surface with a tendency for greater expansion closer to their center. These findings provide a novel framework for analyzing mechanisms underlying hemorrhage growth and response to treatment.


Asunto(s)
Angiografía Cerebral/métodos , Hemorragia Cerebral/diagnóstico por imagen , Hemorragia Cerebral/fisiopatología , Hematoma/diagnóstico por imagen , Hematoma/fisiopatología , Tomografía Computarizada por Rayos X/métodos , Anciano , Anciano de 80 o más Años , Hemorragia Cerebral/patología , Progresión de la Enfermedad , Femenino , Estudios de Seguimiento , Hematoma/patología , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos
16.
Neurocrit Care ; 21(2): 192-9, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23839705

RESUMEN

BACKGROUND AND PURPOSE: Despite extensive studies of supratentorial intracerebral hemorrhage (ICH), limited data are available on determinants of hematoma volume in infratentorial ICH. We therefore aimed to identify predictors of infratentorial ICH volume and to evaluate whether location specificity exists when comparing cerebellar to brainstem ICH. METHODS: We undertook a retrospective analysis of 139 consecutive infratentorial ICH cases (95 cerebellar and 44 brainstem ICH) prospectively enrolled in a single-center study of ICH. ICH volume was measured on the CT scan obtained upon presentation to the Emergency Department using an established computer-assisted method. We used linear regression to identify determinants of log-transformed ICH volume and logistic regression to evaluate their role in surgical evacuation. RESULTS: Median ICH volumes for all infratentorial, cerebellar, and brainstem ICH were nine [interquartile range (IQR), 3-23], ten (IQR, 3-25), and eight (IQR, 3-19) milliliters, respectively. Thirty-six patients were on warfarin treatment, 31 underwent surgical evacuation, and 65 died within 90 days. Warfarin was associated with an increase in ICH volume of 86 % [ß = 0.86, standard error (SE) = 0.29, p = 0.003] and statin treatment with a decrease of 69 % (ß = -69, SE = 0.26, p = 0.008). Among cerebellar ICH subjects, those on warfarin were five times more likely to undergo surgical evacuation (OR = 4.80, 95 % confidence interval 1.63-14.16, p = 0.005). CONCLUSIONS: Warfarin exposure increases ICH volume in infratentorial ICH. Further studies will be necessary to confirm the inverse relation observed between statins and ICH volume.


Asunto(s)
Anticoagulantes/efectos adversos , Hemorragia Traumática del Tronco Encefálico/tratamiento farmacológico , Enfermedades Cerebelosas/tratamiento farmacológico , Hemorragia Cerebral/tratamiento farmacológico , Hematoma/inducido químicamente , Inhibidores de Hidroximetilglutaril-CoA Reductasas/farmacología , Warfarina/efectos adversos , Anciano , Hemorragia Traumática del Tronco Encefálico/diagnóstico por imagen , Hemorragia Traumática del Tronco Encefálico/cirugía , Enfermedades Cerebelosas/diagnóstico por imagen , Enfermedades Cerebelosas/cirugía , Hemorragia Cerebral/diagnóstico por imagen , Hemorragia Cerebral/cirugía , Femenino , Hematoma/diagnóstico por imagen , Hematoma/cirugía , Humanos , Masculino , Persona de Mediana Edad , Radiografía , Estudios Retrospectivos , Resultado del Tratamiento
17.
IEEE Comput Graph Appl ; PP2024 Sep 27.
Artículo en Inglés | MEDLINE | ID: mdl-39331546

RESUMEN

Fiber tracking is a powerful technique that provides insight into the brain's white matter structure. Despite its potential, the inherent uncertainties limit its widespread clinical use. These uncertainties potentially hamper the clinical decisions neurosurgeons have to make before, during, and after the surgery. Many techniques have been developed to visualize uncertainties, however, there is limited evidence to suggest whether these uncertainty visualization influences neurosurgical decision-making. In this paper, we evaluate the hypothesis that uncertainty visualization in fiber tracking influences neurosurgeon's decisions and the confidence in their decisions. For this purpose, we designed a user study through an online interactive questionnaire and evaluate the influence of uncertainty visualization in neurosurgical decision-making. The results of this study emphasize the importance of uncertainty visualization in clinical decision making by highlighting the influence of different interval of uncertainty visualization in critical clinical decisions.

18.
Front Psychiatry ; 15: 1373797, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39109366

RESUMEN

Introduction: The 21-point Brain Care Score (BCS) is a novel tool designed to motivate individuals and care providers to take action to reduce the risk of stroke and dementia by encouraging lifestyle changes. Given that late-life depression is increasingly recognized to share risk factors with stroke and dementia, and is an important clinical endpoint for brain health, we tested the hypothesis that a higher BCS is associated with a reduced incidence of future depression. Additionally, we examined its association with a brain health composite outcome comprising stroke, dementia, and late-life depression. Methods: The BCS was derived from the United Kingdom Biobank baseline evaluation in participants with complete data on BCS items. Associations of BCS with the risk of subsequent incident late-life depression and the composite brain health outcome were estimated using multivariable Cox proportional hazard models. These models were adjusted for age at baseline and sex assigned at birth. Results: A total of 363,323 participants were included in this analysis, with a median BCS at baseline of 12 (IQR: 11-14). There were 6,628 incident cases of late-life depression during a median follow-up period of 13 years. Each five-point increase in baseline BCS was associated with a 33% lower risk of incident late-life depression (95% CI: 29%-36%) and a 27% lower risk of the incident composite outcome (95% CI: 24%-30%). Discussion: These data further demonstrate the shared risk factors across depression, dementia, and stroke. The findings suggest that a higher BCS, indicative of healthier lifestyle choices, is significantly associated with a lower incidence of late-life depression and a composite brain health outcome. Additional validation of the BCS is warranted to assess the weighting of its components, its motivational aspects, and its acceptability and adaptability in routine clinical care worldwide.

19.
Neurology ; 103(4): e209687, 2024 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-39052961

RESUMEN

OBJECTIVES: To investigate associations between health-related behaviors as measured using the Brain Care Score (BCS) and neuroimaging markers of white matter injury. METHODS: This prospective cohort study in the UK Biobank assessed the BCS, a novel tool designed to empower patients to address 12 dementia and stroke risk factors. The BCS ranges from 0 to 21, with higher scores suggesting better brain care. Outcomes included white matter hyperintensities (WMH) volume, fractional anisotropy (FA), and mean diffusivity (MD) obtained during 2 imaging assessments, as well as their progression between assessments, using multivariable linear regression adjusted for age and sex. RESULTS: We included 34,509 participants (average age 55 years, 53% female) with no stroke or dementia history. At first and repeat imaging assessments, every 5-point increase in baseline BCS was linked to significantly lower WMH volumes (25% 95% CI [23%-27%] first, 33% [27%-39%] repeat) and higher FA (18% [16%-20%] first, 22% [15%-28%] repeat), with a decrease in MD (9% [7%-11%] first, 10% [4%-16%] repeat). In addition, a higher baseline BCS was associated with a 10% [3%-17%] reduction in WMH progression and FA decline over time. DISCUSSION: This study extends the impact of the BCS to neuroimaging markers of clinically silent cerebrovascular disease. Our results suggest that improving one's BCS could be a valuable intervention to prevent early brain health decline.


Asunto(s)
Neuroimagen , Humanos , Femenino , Masculino , Persona de Mediana Edad , Neuroimagen/métodos , Estudios Prospectivos , Encéfalo/diagnóstico por imagen , Sustancia Blanca/diagnóstico por imagen , Sustancia Blanca/patología , Imagen por Resonancia Magnética , Estudios de Cohortes , Imagen de Difusión Tensora , Factores de Riesgo , Anciano , Adulto
20.
Stroke ; 44(11): 3097-102, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24021687

RESUMEN

BACKGROUND AND PURPOSE: Intracerebral hemorrhage (ICH) results in high mortality and morbidity for patients. Previous retrospective studies correlated the spot sign score (SSSc) with ICH expansion, mortality, and clinical outcome among ICH survivors. We performed a prospective study to validate the SSSc for the prediction of ICH expansion, mortality, and clinical outcome among survivors. METHODS: We prospectively included consecutive patients with primary ICH presenting to a single institution for a 1.5-year period. All patients underwent baseline noncontrast computed tomography (CT) and multidetector CT angiography performed within 24 hours of admission and a follow-up noncontrast CT within 48 hours after the initial CT. The ICH volume was calculated on the noncontrast CT images using semiautomated software. The SSSc was calculated on the multidetector CT angiographic source images. We assessed in-hospital mortality and modified Rankin Scale at discharge and at 3 months among survivors. A multivariate logistic regression analysis was performed to determine independent predictors of hematoma expansion, in-hospital mortality, and poor clinical outcome. RESULTS: A total of 131 patients met the inclusion criteria. Of the 131 patients, a spot sign was detected in 31 patients (24%). In a multivariate analysis, the SSSc predicted significant hematoma expansion (odds ratio, 3.1; 95% confidence interval, 1.77-5.39; P≤0.0001), in-hospital mortality (odds ratio, 4.1; 95% confidence interval, 2.11-7.94; P≤0.0001), and poor clinical outcome (odds ratio, 3; 95% confidence interval, 1.4-4.42; P=0.004). In addition, the SSSc was an accurate grading scale for ICH expansion, modified Rankin Scale at discharge, and in-hospital mortality. CONCLUSIONS: The SSSc demonstrated a strong stepwise correlation with hematoma expansion and clinical outcome in patients with primary ICH.


Asunto(s)
Angiografía Cerebral/métodos , Hemorragia Cerebral/diagnóstico , Hemorragia Cerebral/patología , Tomografía Computarizada por Rayos X/métodos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Hematoma/patología , Mortalidad Hospitalaria , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Oportunidad Relativa , Valor Predictivo de las Pruebas , Estudios Prospectivos , Resultado del Tratamiento
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