RESUMEN
High-resolution photoelectron spectroscopy of in situ prepared films of GeSb2Te4 reveals significant differences in electronic and chemical structure between the amorphous and the crystalline phase. Evidence for two different chemical environments of Ge and Sb in the amorphous structure is found. This observation can explain the pronounced property contrast between both phases and provides new insight into the formation of the amorphous state.
Asunto(s)
Hipertensión/tratamiento farmacológico , Minoxidil/uso terapéutico , Atenolol/uso terapéutico , Quimioterapia Combinada , Femenino , Humanos , Hidroclorotiazida/uso terapéutico , Masculino , Persona de Mediana Edad , Minoxidil/administración & dosificación , Minoxidil/efectos adversos , Factores de TiempoAsunto(s)
Antagonistas Adrenérgicos beta/uso terapéutico , Hipertensión/tratamiento farmacológico , Propanolaminas/uso terapéutico , Adulto , Anciano , Betaxolol , Relación Dosis-Respuesta a Droga , Femenino , Humanos , Masculino , Persona de Mediana Edad , Propanolaminas/administración & dosificaciónAsunto(s)
Digitoxina/sangre , Administración Oral , Digitoxina/administración & dosificación , Femenino , Humanos , Masculino , Soluciones , ComprimidosAsunto(s)
Digitoxina/sangre , Disponibilidad Biológica , Femenino , Humanos , Masculino , Radioinmunoensayo , Estadística como AsuntoRESUMEN
In 7 out of 14 patients there were marked subjective symptoms following the interruption of prolonged treatment with clonidine. A significant increase in blood pressure, systolic and diastolic, heart rate and urinary catecholamine excretion was seen in the majority of cases. The clinical and biological manifestations would appear to reflect a phenomenon of derepression of sympathetic activity: the increase in urinary catecholamines is the biological result. The findings are of practical importance since they indicate that the interruption of anti-hypertensive therapy with clonidine must be under taken with caution, i.e. progressively.