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(Stroke. 2007;38:1956.)
© 2007 American Heart Association, Inc.

Research Letters

Usefulness of Cardiovascular Investigations in Stroke Management

Clinical Relevance and Economic Implications

Andre Douen, MD, PhD, FRCPC; Nicole Pageau, RN, BSc Sejla Medic, RN

From Department of Neurology (A.D., N.P., S.M.), Trillium Health Centre and Division of Neurology (A.D.), The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada.

Correspondence to André G. Douen, MD, PhD, FRCPC, Adjunct Professor, University of Ottawa, Director, Stroke Clinic, Department of Neurology, Trillium Health Centre, 100 Queensway West, Mississauga, ON L5B 1B8, Canada. E-mail adouen{at}thc.on.ca

Abstract

Background and Purpose— There are no prospective randomized studies assessing the clinical relevance of routine cardiovascular investigations in stroke patients. The objective of this study was to evaluate the utilization, relevance, and economics of cardiovascular investigations in an ambulatory stroke clinic.

Methods— The outcome of cardiovascular investigations in 200 patients with stroke/transient ischemic attack diagnosed in a stroke prevention clinic was assessed. Transthoracic echocardiography (TTE) was assessed for detection of thrombus or mass, poor left ventricle function, and other structural abnormalities. ECG and Holter monitor were felt to be relevant if they showed atrial fibrillation/flutter. Investigations were deemed to be clinically pertinent if they brought about a shift treatment paradigm.

Results— TTE and Holter were performed in >70% of cases and accounted for 94% of total cardiovascular cost. Relevant TTE findings were identified in 6 (4%) patients, which did not alter antithrombotic therapy. Only 2 new cases of atrial fibrillation were identified by both ECG and Holter.

Conclusions— TTE and Holter appear to be costly low-yield procedures in this clinical setting. Prospective analyses may help to provide cost effective criteria for selection of appropriate cardiovascular studies in stroke management.

Key Words: ECG • ECHO • Holter • stroke • TIA

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