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Vol 8, No 2 (2006)
Prace poglądowe
Published online: 2006-08-04
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Disorders of consciousness in stroke. Epidemiologic data

Danuta Ryglewicz, Danuta Milewska
Udar Mózgu. Problemy Interdyscyplinarne 2006;8(2):61-66.

open access

Vol 8, No 2 (2006)
Prace poglądowe
Published online: 2006-08-04

Abstract

Dysfunction of brain stem reticular formation is responsible for consciousness disturbances. According to Polish National Stroke Registry (N = 12 563), which was performed in 60 polish neurological departments from the whole country, data about state of consciousness at the onset of stroke were available from 6838 patients (mean age 69.0 ± 13.3; M = 49.5%). Consciousness disturbances were diagnosed in 24.7%, in those in 6.4% being in coma. In the patients with ischemic stroke consciousness disturbances were observed in 20.7%, in those with hemorrhagic stroke in 54.18% respectively. Consciousness disturbances were more common in TACI (47.76%, coma in 13.97%), especially in comparison to POCI. In those groups of patients consciousness disturbances were very rare (12.3%, coma in 1.08%). Consciousness disturbances observed at the onset of stroke influenced significantly on prognosis. In the group of patients who were alert at the onset of stroke, moderate disability or total recovery at the discharge from hospital have been observed in 75.5%, in contrary to patients who were assessed to be comatose at the onset of ictus, in whom good recovery was observed in 6.7%. In alert patients mortality was 7.93% as compared to comatose ones with mortality at the level of 74.2%, P < 0.0001.

Abstract

Dysfunction of brain stem reticular formation is responsible for consciousness disturbances. According to Polish National Stroke Registry (N = 12 563), which was performed in 60 polish neurological departments from the whole country, data about state of consciousness at the onset of stroke were available from 6838 patients (mean age 69.0 ± 13.3; M = 49.5%). Consciousness disturbances were diagnosed in 24.7%, in those in 6.4% being in coma. In the patients with ischemic stroke consciousness disturbances were observed in 20.7%, in those with hemorrhagic stroke in 54.18% respectively. Consciousness disturbances were more common in TACI (47.76%, coma in 13.97%), especially in comparison to POCI. In those groups of patients consciousness disturbances were very rare (12.3%, coma in 1.08%). Consciousness disturbances observed at the onset of stroke influenced significantly on prognosis. In the group of patients who were alert at the onset of stroke, moderate disability or total recovery at the discharge from hospital have been observed in 75.5%, in contrary to patients who were assessed to be comatose at the onset of ictus, in whom good recovery was observed in 6.7%. In alert patients mortality was 7.93% as compared to comatose ones with mortality at the level of 74.2%, P < 0.0001.
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Keywords

stroke; consciousness disturbances; epidemiology

About this article
Title

Disorders of consciousness in stroke. Epidemiologic data

Journal

Interdisciplinary Problems of Stroke

Issue

Vol 8, No 2 (2006)

Pages

61-66

Published online

2006-08-04

Bibliographic record

Udar Mózgu. Problemy Interdyscyplinarne 2006;8(2):61-66.

Keywords

stroke
consciousness disturbances
epidemiology

Authors

Danuta Ryglewicz
Danuta Milewska

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