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Background and aims Renal dysfunction is a potent risk factor for cardiovascular diseases, including stroke. This study aimed to evaluate the impact of admission estimated glomerular filtration rate (eGFR) levels on short-term (1-month) and long-term (1-year) mortality in patients with acute ischemic stroke. Methods From the Taiwan Stroke Registry data, we classified ischemic stroke patients, identified from April 2006 to December 2015, into 5 groups by eGFR at admission: ≥ 90, 60–89, 30–59, 15–29, and Results Among 52,732 ischemic stroke patients, 1480 died within one month. The 1-month mortality rate was over 5-fold greater in patients with eGFR Conclusions After acute ischemic stroke, patients with reduced eGFR are at elevated risks of short-term and long-term deaths in a graded relationship.

We investigated the impact of serum cholesterol levels on 30-day mortality after ischemic stroke in dialysis patients.From the Taiwan Stroke Registry data, we identified 46,770 ischemic stroke cases, including 1101 dialysis patients and 45,669 nondialysis patients from 2006 to 2013.Overall, the 30-day mortality was 1.46-fold greater in the dialysis group than in the nondialysis group (1.75 versus 1.20 per 1000 person-days). The mortality rates were 1.64, .62, 2.82, and 2.23 per 1000 person-days in dialysis patients with serum total cholesterol levels of 120 mg/dL, 120-159 mg/dL, 160-199 mg/dL, and ≥200 mg/dL, respectively. Compared to dialysis patients with serum total cholesterol levels of 120-159 mg/dL, the corresponding adjusted hazard ratios of mortality were 4.20 (95% confidence interval [CI] = 1.01-17.4), 8.06 (95% CI = 2.02-32.2), and 6.89 (95% CI = 1.59-29.8) for those with cholesterol levels of 120 mg/dL, 160-199 mg/dL, and ≥200 mg/dL, respectively.Dialysis patients with serum total cholesterol levels of ≥160 mg/dL or 120 mg/dL on admission are at an elevated hazard of 30-day mortality after ischemic stroke.

Decompressive craniectomy reduces fatality in patients with space-occupying infarctions. However, mortality remains high. We aimed to identify predictors of in-hospital mortality and outcomes in a cohort of patients with large hemispheric stroke receiving decompressive craniectomy.We retrospectively reviewed all patients diagnosed with complete middle cerebral artery infarction and receiving decompressive craniectomy. Hospital characteristics were compared among different groups (survivors versus non-survivors, good outcome versus poor outcome). A total of 71 consecutive patients were enrolled.From 2004 January to 2010 April, 71 patients were enrolled whose mean age was 65.11 ± 13.13 years and 33 (46.5%) of these were men. The in-hospital mortality was 28.2% overall. Of the patients who survived and were discharged, 37 (77.1%) had poor outcome (mRS 4-6) and 11 (22.9%) had good outcome (mRS 0-3). Pre-operation brain computed tomography (CT) hypodensity volume (p = 0.001) was significantly associated with mortality. In binary logistic regression model, pre-operation brain CT hypodensity volume (OR = 1.015; 95% CI, 1.001 to 1.030) and age (OR = 1.112; 95% CI, 1.017 to 1.215) were both significantly associated with outcomes.In patients with large hemispheric stroke receiving decompressive craniectomy, pre-operation brain CT hypodensity volume was significantly associated with in-hospital mortality whereas age was not. Pre-operation brain CT hypodensity volume and age were predictors of outcomes in those who survived the acute phase.

ACADEMIC EMERGENCY MEDICINE 2011; 18:273–278 © 2011 by the Society for Academic Emergency Medicine Abstract Objectives: The rate of recombinant tissue plasminogen activator (rtPA) use for stroke is low among the Chinese-Taiwanese. The study objective was to determine if less restrictive exclusion criteria for rtPA would increase eligibility and the rate of treatment. Methods: This retrospective before-and-after study was conducted from 2006 to 2009. The authors compared stroke patients treated under the old rtPA exclusion criteria (January 2006 to December 2008) with those treated with less restrictive rtPA exclusion criteria (January to December 2009). Rates of eligibility and treatment and reasons for exclusion from rtPA between the two phases were assessed. Results: Of 461 eligible patients during the study period, 333 were evaluated by the old criteria and 128 were evaluated by the less restrictive criteria. Minor or improving stroke was the primary exclusion reason in both groups (194/333, 58% vs. 70/128, 55%). Eligibility for rtPA was increased in the less restrictive criteria (35/127, 27%, 95% confidence interval [CI] = 20% to 36%) compared to the old criteria (40/333, 12%, 95% CI = 8.7% to 16%; p = 0.0001). Fewer patients were excluded due to old age in the less restrictive criteria (0/128, 0%) compared to the old criteria (37/333, 11%; p = 0.0001). The rate of consent refusal increased in the less restrictive criteria (27/128, 21%, 95% CI = 14% to 29%) compared to the old criteria (23/333, 6.9%, 95% CI = 4.4% to 10%; p

Background Discharge disposition planning is vital for poststroke patients. We investigated clinical factors associated with discharging patients to nursing homes, using the Taiwan Stroke Registry data collected from 39 major hospitals. Methods We randomly assigned 21,575 stroke inpatients registered from 2006 to 2008 into derivation and validation groups at a 3-to-1 ratio. We used the derivation group to develop a prediction model by measuring cumulative risk scores associated with potential predictors: age, sex, hypertension, diabetes mellitus, heart diseases, stroke history, snoring, main caregivers, stroke types, and National Institutes of Health Stroke Scale (NIHSS). Probability of nursing home care and odds ratio (OR) of nursing home care relative to home care by cumulative risk scores were measured for the prediction. The area under the receiver operating characteristic curve (AUROC) was used to assess the model discrimination against the validation group. Results Except for hypertension, all remaining potential predictors were significant independent predictors associated with stroke patient disposition to nursing home care after discharge from hospitals. The risk sharply increased with age and NIHSS. Patients with a cumulative risk score of 15 or more had an OR of 86.4 for the nursing home disposition. The AUROC plots showed similar areas under curves for the derivation group (.86, 95% confidence interval [CI], .85-.87) and for the validation group (.84, 95% CI, .83-.86). Conclusions The cumulative risk score is an easy-to-estimate tool for preparing stroke patients and their family for disposition on discharge.

Vascular dementia and vascular cognitive impairment have attracted more attention recently due to their association with increased risk of death and institutionalization. The purpose of the present study was to detect and identify the characteristics of cognitive impairments during the early stage of lacunar stroke. The subjects consisted of 23 consecutive first-ever acute lacunar infarction patients who were admitted to the Department of Neurology, Kaohsiung Municipal Hsiao-Kang Hospital, Taiwan, from November 2001 to October 2002. The National Institutes of Health Stroke Scale and Cognitive Abilities Screening Instrument (CASI) were used to evaluate stroke severity and cognitive function, and assessments were performed by a neurologist and psychologist, within 10 days of stroke onset. Of the 23 patients, 21 (91.3%) had CASI scores below their respective cutoff values and all patients had cognitive impairment in at least one cognitive domain in CASI. There were no significant correlations between CASI abnormality (below the cutoff value) and patient age, education, or the interval from stroke onset. Recent memory impairment was the most often impaired cognitive domain on CASI (19 patients, 82.6%). There were significant correlations between recent memory and “attention or concentration” (correlation coefficient, 0.52; p < 0.05), and “abstraction and judgment” (correlation coefficient, 0.44; p < 0.05). The correlations between recent memory and other domains were not significant. It was concluded that cognitive impairment after acute lacunar infarct is quite common and recent memory is the most often impaired cognitive domain. This may have been caused by the location of the specific lesion as well as by the impairment in “attention or concentration” or “abstraction and judgment”.

Acquired idiopathic generalized anhidrosis (AIGA) is a rarely encountered clinical syndrome. Sixty-five cases have been reported and 62 of them are Japanese. AIGA was further classified into 3 subgroups with idiopathic pure sudomotor failure being the most common. However, it is burdensome to diagnose AIGA and identify its subgroups. Some of the tools used to diagnose AIGA such as the quantitative sudomotor axon reflex test and microneurography are not generally available.We report the first Chinese patient with AIGA and review the literature to develop a flowchart for the diagnosis and identification of subgroups of AIGA.We conclude that skin biopsy is crucial for the identification of subgroups of AIGA.

Giant cell arteritis (GCA) often presents with symptoms of headache, jaw claudication, polymyalgia rheumatica, and blurred vision. GCA is relatively rare and may have atypical manifestations in Asians, including multiple cranial nerve palsy and reversible proptosis. A high suspicion of GCA is suggested when any older Asian suffers from headache that is new-onset or different from the previous pattern, even without other typical manifestations of GCA.

Susceptibility weighted imaging (SWI) is a newly developed magnetic resonance (MR) protocol. Recent studies have found that SWI may be useful in the field of cerebrovascular diseases, especially for detecting the presence of prominent veins, microbleeds and the susceptibility vessel sign (SVS). Some authors have even suggested that SWI can be used to predict outcome. We conducted a prospective study of patients hospitalized with middle cerebral artery territory infarction receiving MRI within 2 days of stroke onset. The presence of prominent veins, microbleeds and SVS in SWI was analyzed along with hospital characteristics of the patients. A total of 44 patients were enrolled. Among the 44 patients, 15 (34.1%) patients showed prominent veins, 19 (43.2%) showed SVS, and 14 (31.8%) showed microbleeds. The presence of SVS and prominent veins was not associated with prognosis. Though not statistically significant (p = 0.06), patients with SVS were more likely to develop later brain edema. SVS was significantly associated with arterial occlusion (p = 0.008) based on the MR angiogram, and microbleeds were significantly associated with later hemorrhagic transformation (p = 0.018). In our study, SWI could not be used to predict outcome as previously suggested. However, the presence of microbleeds may predict further hemorrhagic transformation, and the presence of SVS could be used to detect intra-arterial thrombus. Patients with SVS were also more likely to develop later brain edema. Including SWI in routine MR protocols for major acute ischemic stroke would be worthwhile.

The rate of recombinant tissue plasminogen activator (rtPA) use for stroke is low among the Chinese-Taiwanese. The study objective was to determine if less restrictive exclusion criteria for rtPA would increase eligibility and the rate of treatment.This retrospective before-and-after study was conducted from 2006 to 2009. The authors compared stroke patients treated under the old rtPA exclusion criteria (January 2006 to December 2008) with those treated with less restrictive rtPA exclusion criteria (January to December 2009). Rates of eligibility and treatment and reasons for exclusion from rtPA between the two phases were assessed.Of 461 eligible patients during the study period, 333 were evaluated by the old criteria and 128 were evaluated by the less restrictive criteria. Minor or improving stroke was the primary exclusion reason in both groups (194/333, 58% vs. 70/128, 55%). Eligibility for rtPA was increased in the less restrictive criteria (35/127, 27%, 95% confidence interval [CI] = 20% to 36%) compared to the old criteria (40/333, 12%, 95% CI = 8.7% to 16%; p = 0.0001). Fewer patients were excluded due to old age in the less restrictive criteria (0/128, 0%) compared to the old criteria (37/333, 11%; p = 0.0001). The rate of consent refusal increased in the less restrictive criteria (27/128, 21%, 95% CI = 14% to 29%) compared to the old criteria (23/333, 6.9%, 95% CI = 4.4% to 10%; p 0.0001). Rate of rtPA treatment was unchanged between the less restrictive criteria (8/128, 6.3%, 95% CI = 2.7% to 12%) and the old criteria (17/333, 5.1%, 95% CI = 3% to 8%; p = 0.63).Increasing eligibility for rtPA does not increase the rate of treatment, possibly due to the high symptomatic intracerebral hemorrhage rate among Chinese-Taiwanese, which is a major concern among emergency physicians (EPs), neurologists, and patients. Dealing with perceived safety issues of rtPA is crucial before the rate of treatment can be increased.

Background there are several variants of Wallenberg's syndrome. Wallenberg's syndrome with proximal quadriparesis has not been reported before. Case summary we report a 25-year-old woman presenting with sudden onset of vertigo, hoarseness, dysphagia, right facial numbness, and proximal quadriparesis. Brain magnetic resonance imaging revealed right posterolateral medullary infarction with medial extension and sparing of the pyramidal tracts. The proximal quadriparesis improved substantially 2 weeks after stroke onset. Conclusion the proximal quadriparesis can be explained by involvement of the right medial medullary reticular formation. Our observation supports the hypothesis that the proximal part of the limb is bilaterally innervated by axons of the corticoreticulospinal tracts in human beings. The rapid recovery of proximal quadriparesis also supports the concept that a functional pyramidal tract seems crucial for recovery after stroke.

Recombinant tissue plasminogen activator (rt-PA) is currently the only approved agent for treating acute ischemic stroke. However, rt-PA may cause fatal symptomatic intracranial hemorrhage and other adverse effects like bleeding complications and allergic reactions. Patients taking angiotensin-converting enzyme (ACE) inhibitors have increased risk of allergic reactions. This report is about a patient with a history of ACE inhibitor intake who experienced life-threatening anaphylactoid shock during rt-PA administration. The relationship between rt-PA and ACE inhibitor was also discussed.

Background Chromosome 9p21 has recently been shown to be a risk region for a broad range of vascular diseases. Since carotid intima-media thickness (IMT) and plaque are independent predictors for vascular diseases, the association between 9p21 and these two phenotypes was investigated. Methodology/Principal Findings Carotid segment-specific IMT and plaques were obtained in 1083 stroke- and myocardial infarction-free volunteers. We tested the genotypes and haplotypes of key single nucleotide polymorphisms (SNPs) on chromosome 9p21 for the associations with carotid IMT and plaque. Multivariate permutation analyses demonstrated that carriers of the T allele of SNP rs1333040 were significantly associated with thicker common carotid artery (CCA) IMT (p = 0.021) and internal carotid artery (ICA) IMT (p = 0.033). The risk G allele of SNP rs2383207 was associated with ICA IMT (p = 0.007). Carriers of the C allele of SNP rs1333049 were found to be significantly associated with thicker ICA IMT (p = 0.010) and the greater risk for the presence of carotid plaque (OR = 1.57 for heterozygous carriers; OR = 1.75 for homozygous carriers). Haplotype analysis showed a global p value of 0.031 for ICA IMT and 0.115 for the presence of carotid plaque. Comparing with the other haplotypes, the risk TGC haplotype yielded an adjusted p value of 0.011 and 0.017 for thicker ICA IMT and the presence of carotid plaque respectively. Further analyzing the data separated by sex, the results were significant only in men but not in women. Conclusions Chromosome 9p21 had a significant association with carotid atherosclerosis, especially ICA IMT. Furthermore, such genetic effect was in a gender-specific manner in the Han Chinese population.

*Department of Neurology, Kaohsiung Medical University Hospital, and †Department of Master’s Program in Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, ‡Department of Neurology, Fooyin University Hospital, Pingtung, Taiwan, and §Division of Neurology, Department of Internal Medicine, Yuan’s General Hospital, Kaohsiung, Taiwan Reprint Address: Poyin Huang, MD, Department of Neurology, Kaohsiung Medical University Chung-Ho Memorial Hospital, No. 100, Tzyou 1st Road, Kaohsiung 807, Taiwan

Acute insular infarction, due to its anatomic and functional complexity and wide connections, may present with various clinical presentations, such as somatosensory deficits, gustatory disorder, vestibular-like syndrome, cardiovascular disturbances, neuropsychological disorders, movement disorders, autonomic dysfunction and empathy impairment. However, there was no mention of the symptoms involving the cerebellar system in the related literature. We present a case of pure left insular cortex infarction with isolated truncal ataxia and demonstrate a crucial relationship between the left insular cortex and the cerebellar system. The possible connections are through the spinocerebellar and dentatorubrothalamic pathway. In conclusions, left insular cortex lesions should be considered in the differential diagnosis of isolated truncal ataxia.

Background Upper limbs dysmetria caused by spinal cord injury is very rare. We will discuss the associated mechanism in our articles. Case presentation A 51-year-old male had sudden onset of weakness, dysmetria over bilateral upper limbs and ataxia after he fell accidentally. Brain magnetic resonance imaging (MRI) revealed no specific findings. C-spine MRI revealed C1 myelopathy and C4-6 spinal cord compression by bulged disc. The symptoms subsided after surgical intervention. Conclusion Sudden onset of upper limbs dysmetria is a sign of dysfunction in cerebellum and its associated pathway. However, lesion in spinal cord can also cause cerebellar signs such as dysmetria.

Cerebral venous thrombosis (CVT) is infrequent among cerebrovascular diseases. The simultaneous thrombosis involving both cerebral artery and venous sinus is even extremely rare. We reported a 41-year-old woman who presented with acute headache and left hemiparesis due to concomitant arterial ischemic stroke and recurrent CVT. Extensive investigation disclosed acquired protein C and protein S deficiency, iron deficiency anemia (IDA) and cryoglobulinemia. She was treated with intravenous injection of heparin followed by oral anticoagulant therapy. The headache rapidly subsided; however, left hemiparesis persisted over five months. The rare condition of simultaneous thrombosis of cerebral artery and venous sinus may be caused by the synergistic effect of coagulation disorders, IDA and cryoglobulinemia.

Giant cell arteritis (GCA) often presents with symptoms of headache, jaw claudication, polymyalgia rheumatica, and blurred vision. GCA is relatively rare and may have atypical manifestations in Asians, including multiple cranial nerve palsy and reversible proptosis. A high suspicion of GCA is suggested when any older Asian suffers from headache that is new-onset or different from the previous pattern, even without other typical manifestations of GCA.

The diagnosis of deep cerebral vein thrombosis is challenging. Brain computed tomography only has limited information. Brain magnetic resonance imaging and venography can make the diagnosis by revealing venous thrombosis. In this case report, we will introduce the unique image findings in brain computed tomography, which may facilitate early diagnosis and result in a better prognosis.