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Original Paper

Effects of Blood Pressure Lowering in the Acute Phase of Total Anterior Circulation Infarcts and Other Stroke Subtypes

Ahmed N. · Wahlgren N.G.

Author affiliations

Stroke Research Unit, Department of Neurology, Karolinska Hospital, Stockholm, Sweden

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Cerebrovasc Dis 2003;15:235–243

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: April 09, 2002
Accepted: August 26, 2002
Published online: April 25, 2003
Issue release date: April 2003

Number of Print Pages: 9
Number of Figures: 2
Number of Tables: 3

ISSN: 1015-9770 (Print)
eISSN: 1421-9786 (Online)

For additional information: http://www.karger.com/CED

Abstract

Background: Lowering of blood pressure (BP) in the acute phase of stroke is reported both to worsen and to improve the outcome. To investigate whether heterogeneity exists between stroke subtypes in the response to BP lowering, we analysed data from the Intravenous Nimodipine West European Stroke Trial (INWEST). Methods: INWEST enrolled acute ischaemic stroke patients within 24 h (n = 295) to the following groups: placebo (n = 100), 1 mg/h nimodipine (n = 101) or 2 mg/h nimodipine (n = 94). Patients were retrospectively classified as total anterior circulation infarct (TACI) (i.e. hemiparesis + hemianopia + dysphasia) and non-TACI (exclusion of any one of these). Main outcome measures were neurological (Orgogozo) and functional (Barthel) scores at day 21. Results: 106 patients were labelled as TACI and 62 as non-TACI. No significant difference in BP was observed between the TACI and non-TACI subtypes at baseline, nor did the subtypes differ in BP course within the treatment groups. A higher proportion of non-TACI patients received postrandomisation antihypertensive agents in addition to the study drug compared with TACI patients (55% non-TACI vs. 26% TACI, p < 0.005). For TACI patients, there was no outcome difference between the placebo- and nimodipine-treated groups. For non-TACI patients, placebo had a significantly better neurological (p = 0.004) and functional (p = 0.04) outcome than the high-dose nimodipine group. In multivariate analysis for TACI patients, BP reduction and nimodipine treatment had no relation with outcome. Baseline stroke severity (p < 0.005) was the only significant predictor of the outcome at day 21. For non-TACI patients, diastolic BP (DBP) reduction (p = 0.03) and nimodipine treatment (p = 0.001) were related to neurological deterioration and nimodipine treatment (p = 0.01) to functional deterioration. Systolic BP reduction was associated with neurological (p < 0.005) and functional improvement (p = 0.01). Baseline stroke severity (p < 0.005) was related to both neurological and functional outcome. Conclusion: BP lowering and nimodipine treatment had no significant effect on outcome for TACI patients. For non-TACI patients, DBP lowering worsened the neurological outcome and high-dose nimodipine worsened both the neurological and functional outcome.

© 2003 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: April 09, 2002
Accepted: August 26, 2002
Published online: April 25, 2003
Issue release date: April 2003

Number of Print Pages: 9
Number of Figures: 2
Number of Tables: 3

ISSN: 1015-9770 (Print)
eISSN: 1421-9786 (Online)

For additional information: http://www.karger.com/CED


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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