El mutismo acinético (MA) es un trastorno del comportamiento, caracterizado por la incapacidad para moverse o hablar en pacientes despiertos. Típicamente ha sido descrito como una complicación transitoria de la cirugía de tumores de fosa posterior. Sin embargo, el MA también puede aparecer tras múltiples fallos valvulares en pacientes hidrocefálicos. En estos casos, el MA no mejora espontáneamente, ni con revisiones valvulares, pero puede responder al tratamiento con bromocriptina. Presentamos una paciente con MA tras una cirugía de fosa posterior, complicada por una ventriculitis con dilataciones ventriculares repetidas, que sólo mejoró con bromocriptina. Revisamos la flsiopatología del MA. Aunque ésta no sea bien conocida, parece que la afectación del núcleo dentado y de sus eferencias (principalmente de glutamato) sería responsable del MA de origen cerebeloso, mientras que la afectación de las vías monoaminérgicas paraventri-culares explicaría el MA relacionado con dilataciones ventriculares repetidas y que responde al tratamiento con bromocriptina. Aun así, se requiere un estudio más profundo de esta patología para aclarar su etiología.
Akinetic mutism (AM) is a behavioral disorder characterized by impossibility to move or speak in awake patients. lt has been typically described as a transient disorder following posterior fossa tumour resection. Besides, AM may also appear after recurrent shunt failures in hydrocephalic patients, with no tendency towards improvement, either spontaneously or with shunt revisions. However successful treatment of this second type of AM has been achieved with bromocriptine. We present a patient who developed AM after a posterior fossa surgery complicated by ventriculitis and múltiple hydrocephalic events. AM only improved with bromocriptine. We review AM pathophysiology. Although not well known, it appears to be quite different, depending on its cerebellar or hydrocephalic origin. Damage to dentate nucleus or its efferents (mainly of glutamate) should promote AM of cerebellar origin, while damage to paraventricular monoaminergic pathways could explain AM related to repeated shunt failures which has successful response to bromocriptine treatment. However, a more complete study of this disorder is required to ascertain its aetiology.
Article
If it is the first time you have accessed you can obtain your credentials by contacting Elsevier Spain in suscripciones@elsevier.com or by calling our Customer Service at902 88 87 40 if you are calling from Spain or at +34 932 418 800 (from 9 to 18h., GMT + 1) if you are calling outside of Spain.
If you already have your login data, please click here . p>
If you have forgotten your password you can you can recover it by clicking here and selecting the option ¿I have forgotten my password¿.