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When restoring with a dental digital system for implant-supported prosthesis, a double digital scanning technique is required: an intraoral scan of the three-dimensional implant location and intraoral scan after placement of temporary denture or provisional prosthesis. During the intraoral scan, the use of scan body as a stable landmark can improve the accuracy of digital impression and simplify laboratory process. In this case, a full-digital system was used to plan and fabricate a custom abutment, provisional prosthesis, and definitive prosthesis. After implant placement, the scan area of the intraoral scan body connected with implant and the intraoral scan body marked on the inside of temporary denture were superimposed. Out of the superimposed files, a custom abutment and provisional prosthesis were fabricated which match the vertical dimension of temporary denture, and definitive prosthesis was fabricated based on provisional prosthesis. We report this case because result has been functionally and esthetically satisfactory by using vertical dimension and central relation set during the fabrication of temporary denture to the definitive prosthesis.
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Background/Aims@#The association between symptomatic knee osteoarthritis (OA) and higher cardiovascular disease (CVD) mortality is established; however, findings from studies that utilized regression analysis were limited, attributed to the strong association between OA and metabolic risk factors. This study aimed to evaluate the association between knee OA and mortality through propensity score matching. @*Methods@#This was a cohort study including Korean National Health and Nutrition Examination Survey (2010–2013) participants aged ≥ 50 years. By linking the survey data to cause of death data (through 2019) from Statistics Korea, mortality and cause-specific mortality data were obtained. Radiographic knee OA (ROA) was defined as bilateral Kellgren–Lawrence grade ≥ 2. Propensity score matching (1:1) was conducted between asymptomatic ROA, knee pain, and symptomatic ROA groups and normal groups, balancing the confounding factors. Time to death was analyzed using Cox proportional hazard modeling. @*Results@#A higher CVD mortality was observed in the symptomatic ROA group, but not in others; the risk estimates were asymptomatic ROA (hazard ratio [HR] 1.12; 95% confidence interval [CI] 0.77–1.65), knee pain (HR 0.61; 95% CI 0.27–1.38), and symptomatic ROA (HR 1.39; 95% CI 0.89–2.17). No association was found between the all-cause/cancer mortality and other groups. @*Conclusions@#When propensity score matching controls metabolic risk factor imbalances, the association between symptomatic knee OA and higher CVD mortality was weaker compared to results of prior studies that used regression adjustment. The results may be more precise estimates of the total risk of knee OA for mortality in Koreans.
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Objective@#Previous studies investigating the beneficial effect of rituximab on lupus nephritis (LN) reported controversial results. There have been few reports of renal response to rituximab according to renal function. We investigated the efficacy of rituximab in refractory/relapsing LN and the role of renal function as a predictor of renal response. @*Methods@#From 2016 to 2019, we retrospectively reviewed 22 patients with refractory/relapsing LN receiving rituximab. Renal responses (complete and partial) at 6 and 12 months were compared between normal (glomerular filtration rate [GFR]≥90 mL/min/1.73 m2 , n=11) and decreased (GFR<90 mL/min/1.73 m2 , n=11) GFR groups. Multivariate Cox regression analysis was used to assess predictors of renal response. @*Results@#At baseline, the decreased GFR group had a higher urine proteinuria to creatinine ratio (p=0.008) and proportion of refractory LN (p=0.010) and previous cyclophosphamide therapy (p=0.035) than the normal GFR group. The overall renal response rate was 45.5% (10 patients) at 6 months and 54.5% (12 patients) at 12 months. Renal response rates were higher in the normal GFR group (81.8% and 90.9% at 6 and 12 months, respectively) than in the decreased GFR group (9.1% and 18.2% at 6 and 12 months, respectively; p<0.001). Normal GFR and anti-La were associated with renal response to rituximab, with hazard ratios of 9.256 (p=0.008) and 5.478 (p=0.041), respectively. @*Conclusion@#Rituximab is an effective therapy for refractory/relapsing LN, particularly in patients with preserved renal function.
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Objective@#. Hydronephrosis, a common complication of idiopathic retroperitoneal fibrosis (iRPF), may lead to poor renal outcomes unless resolved in a timely manner. IgG4-related diseases characterized by elevated serum IgG4 levels are responsible for a few iRPF cases. However, the underlying immunologic features of most iRPF cases have not been clearly defined, and these cases exhibit varied responses to medical treatment. Thus, we investigated the predictive factors for hydronephrosis-associated outcomes among iRPF patients. @*Methods@#. We retrospectively included 18 iRPF patients with hydronephrosis in a tertiary referral hospital from 2012 to 2019. Hydronephrosis improvement was assessed on images taken 6 months after diagnosis. Categorical variables were compared using chi-square or Fisher’s exact test. Continuous variables were compared using Mann–Whitney U-test. @*Results@#. On follow-up images, 8 patients (44.4%) showed an improvement in hydronephrosis. Patients with improvement more frequently had reverse serum IgG4/IgG3 ratio (87.5% vs. 30%, p=0.025), abdominal aorta involvement (87.5% vs. 30%, p=0.025) and glucocorticoid treatment administration (87.5% vs. 30%, p=0.025) than those without improvement. The proportion of elevated serum IgG4 level did not differ between the two groups.Even in the 14 cases with normal serum IgG4 levels, reverse serum IgG4/IgG3 ratio was more frequently observed in patients with improvement than in those without improvement (83.3% vs. 12.5%, p=0.026). @*Conclusion@#. The reverse serum IgG4/IgG3ratio was associated with hydronephrosis improvement in iRPF patients, suggesting it to be a suitable serologic marker for predicting favourable responses to glucocorticoid treatment.
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Background/Aims@#This study aimed to assess the association between local and systemic reactogenicity and humoral immunogenicity after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination. @*Methods@#Adverse events were prospectively evaluated using an electronic diary in 135 healthy adults who received a SARS-CoV-2 vaccine (AZD1222, AstraZeneca/Oxford, n = 42; or BNT162b2, Pfizer/BioNTech, n = 93). We semi-quantitatively measured anti-S1 immunoglobulin G (IgG) using an enzyme-linked immunosorbent assay at baseline, 3 weeks after the first dose of AZD1222 or BNT162b2, and 2 weeks after the second dose of BNT162b2. We evaluated the association between the maximum grade of local or systemic adverse events and the anti-S1 IgG optical density using multivariate linear regression with adjustment for age, sex, and use of antipyretics. @*Results@#The median age of the 135 vaccinees was 30 years (36 years in the AZD1222 group and 29 years in the BNT162b2 group) and 25.9% were male (9.5% in the AZD1222 group and 33.3% in the BNT162b2 group). Local and systemic adverse events were generally comparable after the first dose of AZD1222 and the second dose of BNT162b2. The grades of local and systemic adverse events were not significantly associated with anti-S1 IgG levels in the AZD1222 or BNT162b2 group. @*Conclusions@#Local and systemic reactogenicity may not be associated with humoral immunogenicity after SARS-CoV-2 vaccination.
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There are two forms of autoimmune pancreatitis (AIP). Type 1 is associated with immunoglobulin G4 (IgG4)-related systemic fibro- inflammatory disease, whereas type 2 AIP is localized to the pancreas and not associated with IgG4. The number of children presenting with type 2 AIP has recently increased. Here, we report a case of type 2 AIP in a 16-year-old adolescent who presented with clinical acute pancreatitis and associated pancreatic masses. He was diagnosed with type 2 AIP based on pancreatic biopsy results showing granulocytic epithelial lesions and supportive radiological imaging and steroid responsiveness.
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Percutaneous transhepatic gallbladder drainage is an effective treatment for acute cholecystitis in poor surgical candidates. Endoscopic gallbladder drainage procedures, such as endoscopic ultrasound-guided gallbladder drainage, endoscopic gallbladder stenting, and endoscopic naso-gallbladder drainage, have been used as alternative treatments for acute cholecystitis. These procedures are associated with increased patient comfort and physiologic drainage. We report a case of endoscopic gallbladder stenting for acute cholecystitis in a 62-year-old male undergoing chemotherapy for metastatic pancreatic cancer. After endoscopic gallbladder stenting, the patient’s acute cholecystitis resolved and he was able to undergo scheduled chemotherapy. The inserted double-pigtail plastic stent will be left in situ permanently. The choice of drainage modality for acute cholecystitis will generally be based on resources, patient preferences, local expertise, and clinical context.
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Novel coronavirus (SARS-CoV-2) is found to cause a large outbreak started from Wuhan since December 2019 in China and SARS-CoV-2 infections have been reported with epidemiological linkage to China in 25 countries until now. We isolated SARS-CoV-2 from the oropharyngeal sample obtained from the patient with the first laboratory-confirmed SARS-CoV-2 infection in Korea. Cytopathic effects of SARS-CoV-2 in the Vero cell cultures were confluent 3 days after the first blind passage of the sample. Coronavirus was confirmed with spherical particle having a fringe reminiscent of crown on transmission electron microscopy. Phylogenetic analyses of whole genome sequences showed that it clustered with other SARS-CoV-2 reported from Wuhan.
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Background/Aims@#As the coronavirus disease-2019 global pandemic progresses, screening of antiviral agents effective against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is urgently needed. In addition, considering the viral load kinetics of SARS-CoV-2, which peaks early in the illness, and the massive burden of the disease, which may increase in the near future, identifying well-tolerated oral antivirals becomes increasingly important. We examined the in vitro activity of lopinavir/ritonavir and hydroxychloroquine on SARS-CoV-2, at concentrations which can be used to treat coronavirus-19 patients with little concern of toxicity. @*Methods@#Lopinavir/ritonavir (7/1.75 μg/mL), hydroxychloroquine base (1 or 2 μg/mL), or a combination thereof were administered 1 hour after the inoculation of SARS-CoV-2 to Vero cells at a multiplicity of infection of 0.05. We examined cytopathic effects of virus 48 hours after administration of the respective treatments and measured viral loads at three time points (0, 24, and 48 hours post-treatment) by quantitative real-time reverse-transcription polymerase chain reaction, and compared the results obtained from the different antiviral regimens tested. @*Results@#The severity of cytopathic effects was lower in lopinavir/ritonavir-treated cells, and viral load was significantly reduced in this group compared with the control group (p < 0.001). However, hydroxychloroquine did not show significant inhibitory effects on anti-SARS-CoV-2-mediated cytotoxicity or on viral load at either concentration. @*Conclusions@#Lopinavir/ritonavir showed significant inhibitory effects on SARS-CoV-2 in vitro at its usual plasma concentration. However, the in vitro antiviral activity of hydroxychloroquine at concentrations commonly used in humans was minimal, whether used alone or in combination with lopinavir/ritonavir.
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Background/Aims@#Tumor necrosis factor inhibitors (TNFi) have been known to induce liver enzyme elevation, sometimes associated with viral reactivation or toxic hepatitis. We evaluated the incidence and risk factors of TNFi-associated liver enzyme elevation in Korean ankylosing spondylitis (AS) patients who previously had normal liver enzymes. @*Methods@#Retrospectively, we collected data from the records of 363 AS patients treated with TNFi at a tertiary hospital from 2003 to 2017. Liver enzyme elevation was defined as abnormal elevation of aspartate aminotransferase and/or alanine aminotransferase levels on two or more consecutive visits. Patients with previously diagnosed liver disease were excluded. @*Results@#The incidence of liver enzyme elevation was 23.7% (occurring in 86 of 363 patients). The median duration of TNFi exposure before liver enzyme elevation was 3.72 months (interquartile range, 1.77 to 12.51). There was no difference in the occurrence of liver enzyme elevation with concomitant disease-modifying anti-rheumatic drugs and TNFi compared to TNFi alone (23.9% vs. 23.6%). In multivariate analysis, the hazard ratios for liver enzyme elevation were 4.62 (95% confidence interval [CI], 1.43 to 15.01) for male sex, 4.06 (95% CI, 2.11 to 7.84) for underlying non-alcoholic fatty liver disease, and 2.53 (95% CI, 1.38 to 4.64) for hyperlipidemia. After switching to another TNFi, the liver enzyme elevation was not normalized in nine of 13 patients. @*Conclusions@#Liver enzyme elevation was observed in a quarter of patients with AS receiving a TNFi. Male sex, non-alcoholic fatty liver disease, and hyperlipidemia were independent risk factors for liver enzyme elevation. Switching to another TNFi had a limited effect on restoring normal liver enzyme levels.
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Novel coronavirus (SARS-CoV-2) is found to cause a large outbreak started from Wuhan since December 2019 in China and SARS-CoV-2 infections have been reported with epidemiological linkage to China in 25 countries until now. We isolated SARS-CoV-2 from the oropharyngeal sample obtained from the patient with the first laboratory-confirmed SARS-CoV-2 infection in Korea. Cytopathic effects of SARS-CoV-2 in the Vero cell cultures were confluent 3 days after the first blind passage of the sample. Coronavirus was confirmed with spherical particle having a fringe reminiscent of crown on transmission electron microscopy. Phylogenetic analyses of whole genome sequences showed that it clustered with other SARS-CoV-2 reported from Wuhan.
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OBJECTIVE@#Takayasu's arteritis (TAK) is a vasculitis that primarily involves the aorta and its branches. In Behçet's disease (BD), systemic vasculitis is one of major manifestations. We aimed to compare clinical and angiographic features and outcome between TAK and BD with arterial involvement.@*METHODS@#We retrospectively reviewed medical records of 206 TAK patients and 50 BD patients between 1995 and 2015. Angiographic lesions were evaluated via computed tomography, magnetic resonance imaging, and/or conventional angiography.@*RESULTS@#Fever (30% vs. 9.2%, p<0.001) and arthralgia (36% vs. 7.3%, p<0.001) were more common in BD. C-reactive protein was higher in BD compared with TAK (5.85 mg/dL vs. 2.08 mg/dL, p<0.001). Stenosis (89.8% vs. 60%, p<0.001) and occlusion (65.5% vs. 32%, p<0.001) were more observed in TAK. In contrast, aneurysm was common in BD (62% vs. 20.9%, p<0.001). The carotid artery (73.3% vs. 30%, p<0.001), subclavian artery (71.4% vs. 16%, p<0.001), descending aorta (35% vs. 12%, p=0.002), renal artery (23.8% vs. 10%, p=0.032), superior mesenteric artery (18.4% vs. 4%, p=0.012), and brachiocephalic trunk (13.6% vs. 2%, p=0.020) were more commonly involved in TAK, whereas the femoral artery (10% vs. 2.4%, p=0.027) was more frequently involved in BD. During follow-up, arterial dissection (10% vs. 1.9%, p=0.016), rupture (12% vs. 0.5%, p<0.001), and arterial replacement/resection (66% vs. 9.7%, p<0.001) were more observed in BD.@*CONCLUSION@#TAK differs from BD regarding clinical features and vascular involvement patterns. BD exhibits a higher rate of vascular complications.
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Novel coronavirus (SARS-CoV-2) is found to cause a large outbreak started from Wuhan since December 2019 in China and SARS-CoV-2 infections have been reported with epidemiological linkage to China in 25 countries until now. We isolated SARS-CoV-2 from the oropharyngeal sample obtained from the patient with the first laboratory-confirmed SARS-CoV-2 infection in Korea. Cytopathic effects of SARS-CoV-2 in the Vero cell cultures were confluent 3 days after the first blind passage of the sample. Coronavirus was confirmed with spherical particle having a fringe reminiscent of crown on transmission electron microscopy. Phylogenetic analyses of whole genome sequences showed that it clustered with other SARS-CoV-2 reported from Wuhan.
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Humanos , China , Coronavirus , Coronas , Genoma , Corea (Geográfico) , Microscopía Electrónica , Microscopía Electrónica de Transmisión , Filogenia , Células VeroRESUMEN
Infliximab (IFX) is an anti-tumor necrosis factor (TNF) monoclonal antibody used to treat rheumatoid arthritis, ankylosing spondylitis, and Crohn's disease. Rarely, anti-TNF-induced lupus (ATIL) may occur. ATIL differs from classical drug-induced lupus. We report a 49-year-old woman who developed polyarthralgia after 2 years of IFX treatment for Crohn's disease. Based on the autoantibody profiles, ATIL was diagnosed and low-dose glucocorticoid, hydroxychloroquine, and celecoxib were prescribed. However, arthralgia and hemolytic anemia developed. Because the anti-dsDNA titers waxed and waned, she was switched to vedolizumab, a monoclonal antibody to the human lymphocyte α4β7 integrin. Six months after switching treatment, the arthralgia had improved and the anti-dsDNA antibody normalized. Here, we report a case of ATIL that resolved after switching from infliximab to vedolizumab.
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Femenino , Humanos , Persona de Mediana Edad , Anemia Hemolítica , Artralgia , Artritis Reumatoide , Celecoxib , Enfermedad de Crohn , Hidroxicloroquina , Infliximab , Lupus Eritematoso Sistémico , Linfocitos , Necrosis , Espondilitis AnquilosanteRESUMEN
BACKGROUND AND PURPOSE: Semantic verbal fluency test is a neuropsychological assessment that can sensitively detect neuropathological changes. Considering its multifactorial features tapping various cognitive domains such as semantic memory, executive function, and working memory, it is necessary to examine verbal fluency performance in association with underlying cognitive functions. The objective of the current study was to investigate semantic fluency patterns of people with mild cognitive impairment (MCI) based on clustering and switching and their relationship with working memory. METHODS: Twenty-six individuals with MCI and 23 normal elderly adults participated in this study. A semantic verbal fluency test (animal version) was administered and the performance was analyzed using the following measures: number of correct words, cluster size, and number of switches. Scores of digit forward (DF) and backward span tasks were employed as working memory measures. RESULTS: Analyses of variance revealed significant group differences in the numbers of correct words and switches. Multivariate logistic regression and receiver-operating characteristic analyses showed that the number of switches more sensitively distinguished MCI existence than the number of correct words. Stepwise linear regression analysis showed that DF task and age significantly predicted the number of correct words while only the DF task significantly predicted the number of switches. CONCLUSIONS: Decrement in semantic verbal fluency in MCI seems to be associated with impaired switching abilities. Working memory capacity might serve as the underlying cognitive factor related to decreased verbal fluency in MCI.
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Adulto , Anciano , Humanos , Análisis por Conglomerados , Cognición , Función Ejecutiva , Modelos Lineales , Modelos Logísticos , Memoria , Memoria a Corto Plazo , Disfunción Cognitiva , SemánticaRESUMEN
PURPOSE: Nutritional markers, such as total protein, albumin, and vitamin D have been reportedly associated with neonatal outcomes. This study aimed to assess the correlation between nutritional markers at birth and the need for respiratory support on the first day of life. METHODS: This retrospective study included 94 newborns admitted to the neonatal intensive care unit of Kyungpook National University Children's Hospital between March and December 2017. We measured levels of nutritional markers, including serum total protein, albumin, ferritin, 25-hydroxyvitamin D (25-OHD), and prealbumin, from cord blood or blood sample within 24 hours after birth. Respiratory support was defined as the use of nasal continuous positive airway pressure, humidified high-flow nasal cannula, or mechanical ventilation on the first day of life. RESULTS: The mean gestational age and birth weight were 36.6±2.3 weeks and 2,714±575 g, respectively. Serum total protein, albumin, prealbumin, and ferritin levels at birth were significantly correlated with gestational age and birth weight. Total protein, albumin, ferritin, and 25-OHD levels were not correlated with the time to recover birth weight after adjusting for gestational age. Moreover, prealbumin levels at birth were significantly lower in small-for-gestational-age infants than in appropriate-for-gestational-age infants. The need for respiratory support on the first day of life decreased 0.058- and 0.001-fold for every 1 g/dL increase in serum total protein (95% confidence interval [CI], 0.004 to 0.833; P=0.036) and albumin (95% CI, 0.000 to 0.136; P=0.009) levels, respectively. CONCLUSION: Nutritional status at birth could be associated with the need for respiratory support on the first day of life, regardless of the Apgar score.
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Humanos , Lactante , Recién Nacido , Puntaje de Apgar , Peso al Nacer , Catéteres , Presión de las Vías Aéreas Positiva Contínua , Ferritinas , Sangre Fetal , Edad Gestacional , Cuidado Intensivo Neonatal , Estado Nutricional , Parto , Prealbúmina , Respiración Artificial , Insuficiencia Respiratoria , Estudios Retrospectivos , Vitamina DRESUMEN
Infliximab (IFX) is an anti-tumor necrosis factor (TNF) monoclonal antibody used to treat rheumatoid arthritis, ankylosing spondylitis, and Crohn's disease. Rarely, anti-TNF-induced lupus (ATIL) may occur. ATIL differs from classical drug-induced lupus. We report a 49-year-old woman who developed polyarthralgia after 2 years of IFX treatment for Crohn's disease. Based on the autoantibody profiles, ATIL was diagnosed and low-dose glucocorticoid, hydroxychloroquine, and celecoxib were prescribed. However, arthralgia and hemolytic anemia developed. Because the anti-dsDNA titers waxed and waned, she was switched to vedolizumab, a monoclonal antibody to the human lymphocyte α4β7 integrin. Six months after switching treatment, the arthralgia had improved and the anti-dsDNA antibody normalized. Here, we report a case of ATIL that resolved after switching from infliximab to vedolizumab.
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At an intensive care unit, four neonates died consecutively within 80 minutes. Citrobacter freundii was isolated from blood samples of the 4 patients. It was also cultured from the leftover SMOFlipid that had been infused intravenously into the patients. In this in vitro study, we evaluated the bacterial growth kinetics and change in size of fat globules in SMOFlipid contaminated with C. freundii. Following the growth of bacteria, pH of SMOFlipid decreased to < 6, and the number of fat globules larger than 5 µm increased. Pulmonary fat embolism is proposed as a possible cause of the sudden deaths as well as fulminant sepsis.
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Humanos , Recién Nacido , Bacterias , Citrobacter freundii , Citrobacter , Muerte Súbita , Embolia Grasa , Emulsiones Grasas Intravenosas , Concentración de Iones de Hidrógeno , Técnicas In Vitro , Infusiones Intravenosas , Unidades de Cuidados Intensivos , Cinética , SepsisRESUMEN
OBJECTIVE: To demonstrate the prevalence of cerebral hypoperfusion without focal cerebral lesions in patients with Moyamoya disease (MMD), and the relationship between areas of hypoperfusion and cognitive impairment. METHODS: Twenty-six MMD patients were included. Patients were categorized according to the presence/absence of hypoperfusion in the frontal, parietal, temporal, and occipital lobes on brain single-photon-emission computed tomography (SPECT) after acetazolamide challenge. Computerized neuropsychological test (CNT) results were compared between groups. RESULTS: Only 3 patients showed normal cerebral perfusion. Baseline characteristics were similar between groups. Patients with frontal lobe hypoperfusion showed lower scores in visual continuous performance test (CPT), auditory CPT, forward digit span test, backward digit span test, verbal learning test, and trail-making test. Patients with parietal lobe hypoperfusion showed lower backward digit span test, visual learning test, and trail-making test scores. Related to temporal and occipital lobes, there were no significant differences in CNT results between the hypoperfusion and normal groups. CONCLUSION: MMD patients without focal cerebral lesion frequently exhibit cerebral hypoperfusion. MMD patients with frontal and parietal hypoperfusion had abnormal CNT profiles, similar to those with frontal and parietal lesions. It is suggested that the hypoperfusion territory on brain SPECT without focal lesion may affect the characteristics of neurocognitive dysfunction in MMD patients.
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Humanos , Acetazolamida , Encéfalo , Cognición , Trastornos del Conocimiento , Lóbulo Frontal , Aprendizaje , Enfermedad de Moyamoya , Pruebas Neuropsicológicas , Lóbulo Occipital , Lóbulo Parietal , Perfusión , Prevalencia , Rabeprazol , Tomografía Computarizada de Emisión de Fotón Único , Aprendizaje VerbalRESUMEN
To investigate the influence of leukoaraiosis (LA) on the functional outcomes of subcortical stroke in the subacute phase after onset. We retrospectively analyzed 41 patients with subacute subcortical infarct at a single center from 2011 to 2015. We explored the relationship between LA severity at admission/transfer (initial evaluation) and functional outcome at the time of discharge (follow-up evaluation), as assessed using the modified Rankin Scale (mRS), Functional Ambulation Category (FAC), and modified Barthel Index (mBI). LA severity was graded as mild, moderate, or severe according to the Fazekas scale. Scores of the mRS, FAC, and mBI were compared in patients grouped based on LA severity: no LA (n = 12), mild LA (n = 19), and moderate-to-severe LA (n = 10). Significant inter-group differences were observed in all 3 scores at both the initial and follow-up evaluations. After adjustment for age, scores at follow-up evaluation were significantly different between the 2 groups. LA is related to functional outcomes of subcortical stroke in the subacute phase after onset. After adjustment for age, severe LA was correlated with poor functional outcomes in the subacute phase.