Stroke · 2008
Etiologic diagnosis of ischemic stroke subtypes with plasma biomarkers.
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Montaner Joan, Perea-Gainza Mila, Delgado Pilar, Ribó Marc, Chacón Pilar, Rosell Anna, Quintana Manolo, Palacios Mauricio E, Molina Carlos A, Alvarez-Sabín José
Аннотация
BACKGROUND AND PURPOSE: Because there is no biologic marker offering precise information about stroke etiology, many patients receive a diagnosis of undetermined stroke even after all available diagnostic tests are done, precluding correct treatment.
METHODS: To examine the diagnostic value of a panel of biochemical markers to differentiate stroke etiologies, consecutive acute stroke patients were prospectively evaluated. Brain computed tomography, ultrasonography, cardiac evaluations, and other tests were done to identify an etiologic diagnosis according to TOAST classification. Blood samples were drawn on Emergency Department arrival (<24 hours) to test selected biomarkers: C-reactive protein, D-dimer, soluble receptor for advanced glycation end products, matrix metalloproteinase-9, S-100b, brain natriuretic peptide (BNP), neurotrophin-3, caspase-3, chimerin, and secretagogin (assayed by ELISA).
RESULTS: Of 707 ischemic stroke patients included, 36.6% were cardioembolic, 21.4% atherothrombotic, 18.1% lacunar, and 23.9% of undetermined origin. High levels of BNP, soluble receptor for advanced glycation end products, and D-dimer (P<0.0001) were observed in patients with cardioembolic stroke. Independent predictors (odds ratios with CIs are given) of cardioembolic stroke were as follows: atrial fibrillation 15.3 (8.4-27.7, P<0.001); other embolic cardiopathies 14.7 (4.7-46, P<0.001); total anterior circulation infarction 4 (2.3-6.8, P<0.001); BNP >76 pg/mL 2.3 (1.4-3.7, P=0.001); and D-dimer >0.96 microg/mL 2.2 (1.4-3.7, P=0.001). Even among patients with transient symptoms (n=155), a high BNP level identified cardioembolic etiology (6.7, 2.4-18.9; P<0.001). A model combining clinical and biochemical data had a sensitivity of 66.5% and a specificity of 91.3% for predicting cardioembolism.
CONCLUSIONS: Using a combination of biomarkers may be a feasible strategy to improve the diagnosis of cardioembolic stroke in the acute phase, thus rapidly guiding other diagnostic tests and accelerating the start of optimal secondary prevention.
METHODS: To examine the diagnostic value of a panel of biochemical markers to differentiate stroke etiologies, consecutive acute stroke patients were prospectively evaluated. Brain computed tomography, ultrasonography, cardiac evaluations, and other tests were done to identify an etiologic diagnosis according to TOAST classification. Blood samples were drawn on Emergency Department arrival (<24 hours) to test selected biomarkers: C-reactive protein, D-dimer, soluble receptor for advanced glycation end products, matrix metalloproteinase-9, S-100b, brain natriuretic peptide (BNP), neurotrophin-3, caspase-3, chimerin, and secretagogin (assayed by ELISA).
RESULTS: Of 707 ischemic stroke patients included, 36.6% were cardioembolic, 21.4% atherothrombotic, 18.1% lacunar, and 23.9% of undetermined origin. High levels of BNP, soluble receptor for advanced glycation end products, and D-dimer (P<0.0001) were observed in patients with cardioembolic stroke. Independent predictors (odds ratios with CIs are given) of cardioembolic stroke were as follows: atrial fibrillation 15.3 (8.4-27.7, P<0.001); other embolic cardiopathies 14.7 (4.7-46, P<0.001); total anterior circulation infarction 4 (2.3-6.8, P<0.001); BNP >76 pg/mL 2.3 (1.4-3.7, P=0.001); and D-dimer >0.96 microg/mL 2.2 (1.4-3.7, P=0.001). Even among patients with transient symptoms (n=155), a high BNP level identified cardioembolic etiology (6.7, 2.4-18.9; P<0.001). A model combining clinical and biochemical data had a sensitivity of 66.5% and a specificity of 91.3% for predicting cardioembolism.
CONCLUSIONS: Using a combination of biomarkers may be a feasible strategy to improve the diagnosis of cardioembolic stroke in the acute phase, thus rapidly guiding other diagnostic tests and accelerating the start of optimal secondary prevention.
Предметные рубрики MeSH
Acute DiseaseAgedAged, 80 and overBiomarkersBrain IschemiaC-Reactive ProteinCalcium-Binding ProteinsCaspase 3Chimerin ProteinsCoronary VesselsFemaleFibrin Fibrinogen Degradation ProductsHumansIntracranial EmbolismMaleMatrix Metalloproteinase 9Middle AgedNatriuretic Peptide, BrainNeurotrophin 3Predictive Value of TestsProspective StudiesReceptor for Advanced Glycation End ProductsReceptors, ImmunologicRisk FactorsSecretagoginsSensitivity and SpecificitySeverity of Illness IndexStroke