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Misdiagnosis of symptomatic cerebral aneurysm. Prevalence and correlation with outcome at four institutions.

Abstract：

BACKGROUND AND PURPOSE:It is not known what fraction of patients with symptomatic cerebral aneurysms are misdiagnosed at initial medical presentation. It is also not clear whether misdiagnosed patients more frequently deteriorate before definitive aneurysm diagnosis and therapy or achieve a poorer outcome than correctly diagnosed patients. METHODS:We reviewed records of consecutive patients with symptomatic cerebral aneurysms managed by four tertiary-care neurosurgical services during a recent 19-month period. Clinical course and outcome were analyzed according to misdiagnosis or correct diagnosis at initial medical evaluation. RESULTS:Fifty-four of 217 patients (25%) were misdiagnosed at initial medical evaluation, including 46 of 121 patients (38%) initially in good clinical condition (clinical grade 1 or 2). Forty-six of 54 patients (85%) in the misdiagnosis group were initially grade 1 or 2 compared with 75 of 163 patients (46%) with correct initial diagnosis (P < .01). Twenty-six of 54 misdiagnosed patients (48%) deteriorated or rebled before definitive aneurysm treatment compared with 4 of 165 correctly diagnosed patients (2%) (P < .001). Among patients initially presenting as clinical grade 1 or 2, overall good or excellent outcome was achieved in 91% of those with correct initial diagnosis and 53% of patients with initial misdiagnosis (P < .001). Deterioration before correct diagnosis accounted for 16 of 67 patients (24%) with poor or worse final outcome in this series. CONCLUSIONS:Patients in good clinical condition with symptomatic cerebral aneurysms were commonly misdiagnosed. Misdiagnosed patients were more likely than correctly diagnosed patients to deteriorate clinically and had a worse overall outcome. Misdiagnosed cases accounted for a significant fraction of overall poor outcomes among consecutive cases of symptomatic aneurysms.

journal_name

Stroke

journal_title

Stroke

authors

Mayer PL,Awad IA,Todor R,Harbaugh K,Varnavas G,Lansen TA,Dickey P,Harbaugh R,Hopkins LN

doi

10.1161/01.str.27.9.1558

subject

Has Abstract

pub_date

1996-09-01 00:00:00

pages

1558-63

issue

eissn

0039-2499

issn

1524-4628

journal_volume

pub_type

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Misdiagnosis of symptomatic cerebral aneurysm. Prevalence and correlation with outcome at four institutions.