(Stroke. 1997;28:2376-2381.)
© 1997 American Heart Association, Inc.
Articles |
Surgical Closure of Patent Foramen Ovale in Cryptogenic Stroke Patients
From the Departments of Medicine (S.H., M.R.D.T., R.R.S.), Neurology (R.L.S., J.P.M.), Public Health (Epidemiology) (R.L.S.), and Surgery (C.S.), Columbia University, New York, NY.
Correspondence to Shunichi Homma, MD, Division of Cardiology, Department of Medicine, Columbia-Presbyterian Medical Center, PH 3-342 630 West 168th Street, New York, NY 10032. E-mail hommash{at}medicine1.cpmc.columbia.edu.
Background and Purpose Patent foramen ovale (PFO) is associated with stroke of unknown etiology or cryptogenic stroke. However, optimal treatment to prevent recurrence in cryptogenic stroke patients with PFO is not clearly defined. Since PFO represents a surgically repairable lesion, interest in closing it is high. This report reviews our experience with cryptogenic stroke patients with PFO who underwent surgical PFO closure and were followed for recurrence of neurological events.
Methods We followed 28 cryptogenic stroke patients (17 men, 11 women; mean age, 41±13 years) with transesophageal echocardiograpy–defined PFO who had undergone PFO closure by open thoracatomy. All patients selected for surgery refused, could not take, or failed warfarin therapy. They were followed by physician visits and telephone interviews.
Results There were no surgical complications. With a mean follow-up of 19 months, four patients experienced neurological event recurrence, one stroke, and three transient ischemic attacks. Kaplan-Meier survival analysis demonstrated that the actuarial rate of recurrence was 19.5% (95% confidence limit 2.2-36.8%) at 13 months of follow-up. None of the 17 patients (0%) younger than 45 years suffered a recurrence, whereas four of 11 patients (35%) aged 45 or older experienced a recurrence of neurological event (P<.02). Using a proportional hazards regression model, the increase in relative risk with increasing age was 2.76 per 10 years (95% confidence interval 1.07 to 7.16).
Conclusions Although PFO is easily repairable in patients with cryptogenic stroke, its closure does not consistently prevent recurrence of ischemic events. The recurrence appears to occur more frequently in older cryptogenic stroke patients.
Key Words: foramen ovale, patent • stroke management • surgery
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