Asunto(s)
Soluciones para Diálisis/efectos adversos , Extravasación de Materiales Terapéuticos y Diagnósticos/etiología , Diálisis Peritoneal/efectos adversos , Adolescente , Extravasación de Materiales Terapéuticos y Diagnósticos/diagnóstico , Femenino , Humanos , Tomografía Computarizada por Rayos X , VaginaRESUMEN
Takayasu's arteritis is a chronic inflammatory disease that primarily involves the aorta and its main branches. Varying degrees of narrowing, occlusion, or dilatation develop in the involved vessel segments. However, dissection of the aorta is quite rare in this disease, and it may develop particularly after angioplasty. We report a very rare case of Takayasu's arteritis with dissection of the abdominal aorta just distal to the origin of the inferior mesenteric artery in a 9-year-old girl. She was treated conservatively with close follow-up. At the end of 1 year's follow-up, the dissection of the aorta did not show progression, and new lesions were not identified. To our knowledge, this patient is the youngest child presented with arterial dissection as the initial manifestation of the disease.
Asunto(s)
Aneurisma de la Aorta Abdominal/diagnóstico , Disección Aórtica/diagnóstico , Arteritis de Takayasu/complicaciones , Dolor Abdominal/etiología , Disección Aórtica/complicaciones , Antihipertensivos/administración & dosificación , Aorta Abdominal/diagnóstico por imagen , Aneurisma de la Aorta Abdominal/complicaciones , Insuficiencia de la Válvula Aórtica/complicaciones , Insuficiencia de la Válvula Aórtica/diagnóstico , Niño , Progresión de la Enfermedad , Femenino , Estudios de Seguimiento , Cefalea/etiología , Válvulas Cardíacas/diagnóstico por imagen , Humanos , Hipertrofia Ventricular Izquierda/complicaciones , Hipertrofia Ventricular Izquierda/diagnóstico , Inmunosupresores/administración & dosificación , Insuficiencia de la Válvula Mitral/complicaciones , Insuficiencia de la Válvula Mitral/diagnóstico , Arteria Renal/diagnóstico por imagen , Obstrucción de la Arteria Renal/complicaciones , Obstrucción de la Arteria Renal/diagnóstico , Ultrasonografía , Vómitos/etiologíaRESUMEN
One can obtain either exact realizations or useful approximations of linear systems or matrix-vector products that arise in many different applications by implementing them in the form of multistage or multichannel fractional Fourier-domain filters, resulting in space-bandwidth-efficient systems with acceptable decreases in accuracy. Varying the number and the configuration of filters enables one to trade off between accuracy and efficiency in a flexible manner. The proposed scheme constitutes a systematic way of exploiting the regularity or structure of a given linear system or matrix, even when that structure is not readily apparent.
RESUMEN
Akinetic mutism (AM) is a rare, specific, unconscious state. An AM patient seems to be awake, lacks mental activity, is unable to speak, and does not respond to any environmental stimulus. Cyclical sleep and awake states are maintained, and incontinence is present. Various factors such as tumor, vascular events, drug use and radiotherapy are responsible for the development of AM. A 12-year-old epileptic patient displayed AM and diphenylhydantoin toxicity (DPH). She seemed awake, was unable to speak or to understand, and had no movements with either spontaneous or noxious stimuli. Her serum DPH level was greater than 40 micrograms/ml. Magnetic resonance imaging (MRI) showed mild cerebellar atrophy. All known causes of AM were excluded. The AM state in this patient was considered to be due to toxic DPH levels. She regained her motor and mental activity within two months after carbamazepine was administered to replace DPH. She was symptom-free when examined at the two-year follow-up. No similar adverse effect of DPH has been reported to date.