title: [Spontaneous syncope as the only sign of Arnold-Chiari type I malformations].
abstract: We present a patient suffering from spontaneous recurrent syncopes as the sole symptom of Arnold-Chiari type I malformation. The syncopes were attributed to transient compression of neural and/or vascular structures at the cranio-cervical junction by the descended cerebellar tonsils, triggered by an increase in intracranial pressure. The disappearance of symptoms after posterior fossa decompression confirmed our hypothesis.
authors.affiliation: Servico de Neurocirugía, Hospital de Guipúzcoa, San Sebastián.
authors.forename: L J
authors.initials: LJ
authors.lastname: Martínez Soto
authors.forename: E
authors.initials: E
authors.lastname: Urculo Bareño
authors.forename: R
authors.initials: R
authors.lastname: Ramírez Penso
authors.forename: V
authors.initials: V
authors.lastname: Olasagasti
authors.forename: J M
authors.initials: JM
authors.lastname: Trinidad Paz
mesh_terms: D001139:Arnold-Chiari Malformation / Q000150:complications* / Q000503:physiopathology* / Q000601:surgery; D002318:Cardiovascular Diseases / Q000209:etiology* / Q000503:physiopathology*; D003388:Cranial Fossa, Posterior / Q000503:physiopathology* / Q000601:surgery; D003399:Craniotomy; D005260:Female; D006801:Humans; D007427:Intracranial Pressure; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D013575:Syncope / Q000209:etiology* / Q000503:physiopathology*
vernacular_title: Síncope espontáneo como único síntoma de la malformación de Arnold-Chiari tipo I. Base fisiopatológica.