Approximately two thirds of patients with OSAS, with an indication for CPAP, continue to use this therapy in the long term in a Chilean population. This figure is similar to other reports from abroad. It is also possible to identify predictive factors for CPAP discontinuation in this population.
Bradycardia during epileptic seizures. Report of two patients Cardiac rate and rhythm due to autonomic activation, may occur during epileptic seizures. They are probably a consequence of the spreading seizure activity to structures involved in the autonomic control of cardiac rhythm. Sinus tachycardia is the most frequent finding (90%). Ictal bradycardia is rare and life threatening asystoles require cardiac pacemaker insertion. We report two patients with a right frontal seizure associated to bradycardia, during simultaneous EEG/ECG monitoring. Interictal autonomic function tests showed preserved sympathetic and cardiac vagal responses. Normal interictal autonomic function tests, suggested a transient failure of sympatho-vagal balance (Rev Méd Chile 2009; 137: 401-4).
[1][2][3][4] . Los factores de riesgo se dividen en: adquiridos (cirugía, trauma, embarazo, puerperio, síndrome antifosfolípidos, cáncer, hormonas exógeneas) o congénitos (trombofilias) 1,2 . La trombosis de seno venoso secundaria a traumatismo encéfalo craneano es reportada a nivel mundial como casos únicos o series pequeñas 3,4 . La cefalea es el síntoma más frecuente (90%), con intensidad progresiva en días a semanas y escasa respuesta a analgésicos. Una minoría debuta como cefalea ictal. Las focalizaciones neurológicas más frecuentes son afasia y hemiparesia, revelando una complicación local, ya sea infarto venoso o hemorragia. Papiledema se presenta en 25% de los casos y crisis epilépticas en cerca de 40% 1,4 . El cuadro se confirma mediante T1 en corte fino con gadolinio por resonancia magnética (RM) o con tomografía computarizada (TC) 1,2
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