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  • Title: [Evaluation of atrial septum aneurysm with transesophageal echocardiography in cardioembolic cerebral ischemia].
    Author: Catapano O, Oldani A, Milandri M, Giondi I, Guidi C, Galletti G, Aquilina M.
    Journal: Cardiologia; 1992 Dec; 37(12):859-64. PubMed ID: 1303302.
    Abstract:
    The prevalence and characteristics of atrial septal aneurysm were identified by transesophageal echocardiography (TEE) in a multicenter prospective study. One hundred and seventy-seven consecutive patients were evaluated in 2 years and 2 groups were compared: Group 1, 51 patients with documented cerebral ischemia event; Group 2, 126 patients affected by cardiac disease referred for other reasons. Group 1 included patients selected among 352 patients admitted to the Neurological and Geriatric Division of our Hospital in the period of this study. Patients with stroke-related carotid lesions and patients with a negative TC scan were excluded from this study. Atrial septal aneurysm was identified in 15 patients: 8 in Group 1 (16%), and 7 in Group 2 (5%), with a significant statistical difference between the groups (p = 0.02). All patients with atrial septal aneurysm underwent before TEE transthoracic echocardiography, leading to a correct diagnosis in 10 of 15 cases (66%); all patients underwent 24-hours ECG monitoring. A right to left shunt was detected by contrast echocardiography in 9 patients, 6 in Group 1 and 3 in Group 2, (NS). A more pronounced shunt was evident in Group 1. There was no difference between the 2 groups with regard to associated cardiac disease, arrhythmias and type of atrial septal aneurysm. The thickness of the septum was greater in Group 1, with significant statistical difference (p = 0.002). It is concluded that atrial septal aneurysm, diagnosed by TEE, is a potential source of embolic events.
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