Admission hyperglycemia causes infarct volume expansion in patients with ICA or MCA occlusion: Association of collateral grade on conventional angiography.
ABSTRACT BACKGROUND AND PURPOSE: Hyperglycemia (HG) is associated with infarct volume expansion in acute ischaemic stroke patients. However, collateral circulation can sustain the ischaemic penumbra and limit the growth of infarct volume. The aim of this study was to determine whether the association between HG and infarct volume expansion is dependent on collateral circulation. METHODS: We performed a retrospective analysis of 93 acute ischaemic stroke patients with internal carotid artery or middle cerebral artery occlusion within 24 h of onset were retrospectively studied. HG was diagnosed in patients with an admitting blood glucose value ≥140 mg/dl. Angiographic collateral grade 0-1 was designated as poor collateral circulation and grade 2-4 as good collateral circulation. Infarct volume was measured at admission and at again within 7 days using diffusion-weighted magnetic resonance images. RESULTS: Among 34 patients with poor collateral grade, the change in infarct volume was significantly greater in the HG group than in the non-HG group (106.0 ml vs. 22.7 ml, P = 0.002). Among the 59 patients with good collateral circulation, the change in infarct volume was greater in the HG group than in the non-HG group (53.3 ml vs. 10.9 ml, P = 0.047). Multiple regression analysis indicated that admission HG (P = 0.004), baseline National Institutes of Health Stroke Scale score (P = 0.018), and poor collateral circulation (P = 0.040) were independently associated with infarct volume expansion. CONCLUSIONS: Infarct volume expansion was greater in individuals with HG on admission regardless of collateral circulation status.
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ABSTRACT: According to the international reports, brain stroke is the main reason of death and disability. In ischemic stroke, early and precise classification of patients who may profit from conflicting finest therapeutic interference is necessary if enhanced effects in terms of survival are to be talented. Due to uncomplicated, easy performance, and inexpensive method the aim of this preliminary study was to investigate changes related to biochemical and hematological variables in patients with stroke. A cross-sectional study located at the neurology ward of the Ayatolah Kashani and Alzahra Hospitals' (conducted to Isfahan Neurosciences Research Center) was carried out on fifty patients (females; n = 20 and males; n = 30) between April 1, 2012 and September 31, 2012. The data from subjects' records were taken for analyzing variables. The statistical analysis of d-base was performed using (SPSS) for windows. Analysis of available data showed that with a mean of 182.4 mg/dl, blood sugar (BS) ranged from 75 to 300 mg/dl (n = 15/50). The changes in hemoglobin (Hgb) (mean 4.6 g/dl, n = 27/50), platelet (mean 210, 653/mm(3), n = 26/50) and lymphocyte (Lymph) (mean 37, n = 26/50) seems to be significant. The mean age of females was 76 years (ranged 46-93 years). The mean age of males was 70 years (ranged 31-90 years). Information related to previous drug history was available only in 24 patients. In 5 out of 22 cases ischemic heart disease (IHD) were positive. In 8 out of 29 cases, diabetes mellitus was positive. In 5 out of 28 cases, hypertension (HTN) was positive. In the four patients both IHD and HTN were positive. Any considerable alter in patients' biochemical and hematological figures (BS, Hgb, Plt and Lymph) may necessitate further attention related to inter- and intra-individual variability in clinical supervision and drug's assortment. Therefore, success in treatment could be achieved by the close management of clinical, biochemical, hematological, and pharmacological manifestation. To reduce disability, mortality, and morbidity in Iranian stroke population further clinical studies are needed to correlate drugs and laboratory markers to associated clinical events in order.International journal of preventive medicine 05/2013; 4(Suppl 2):S347-52.
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ABSTRACT: Precise associations between clinical characteristics of transient ischemic attack (TIA) patients and diffusion-weighted imaging (DWI) positivity are still controversial. Thus, the purposes of this were to investigate the clinical characteristics associated with DWI positivity in patients with TIA and to develop a risk score for the prediction of DWI positivity in TIA. Between April 2008 and June 2011, we retrospectively enrolled consecutive patients, who were admitted to our hospital with TIA and underwent DWI within 24 hours of admission. Patients were divided into a DWI-positive or DWI-negative group. The clinical characteristics of the 2 groups were compared, and a DWI positivity score was determined for each patient. We calculated the DWI positivity score by assigning a point value of 1 to the following factors: blood urea nitrogen to serum creatinine (BUN/Cr) ratio greater than 17.5, glucose greater than 161 mg/dL, and brain natriuretic peptide (BNP) greater than 55.4 pg/dL. Values below these cutoffs were given a value of 0, and the 3 point values were summed to obtain the final DWI positivity score (from 0 to 3). A total of 41 patients (median age = 62 years; 8 women) were enrolled in this study. There were 14 (35%) patients with DWI positivity. The median of the BUN/Cr ratio, blood glucose, and BNP were significantly higher in the DWI-positive than that in the DWI-negative group. As the DWI positivity score increased, there was an increased rate of DWI positivity. Our data indicate that seminal scores that included BUN/Cr ratio, glucose, and BNP contributed to DWI positivity in TIA patients.Journal of stroke and cerebrovascular diseases: the official journal of National Stroke Association 10/2013; 23(5). DOI:10.1016/j.jstrokecerebrovasdis.2013.09.002 · 1.99 Impact Factor
- Stroke 01/2014; 45(2). DOI:10.1161/STROKEAHA.113.002491 · 6.02 Impact Factor