RESUMEN
Several commonly used scintigraphic methods of GFR measurement were evaluated. Forty-three adult patients with a wide range of ages and renal function were studied. The two-sample plasma method of Russell and the urinary method of Jackson were the most accurate methods overall. The one-sample plasma method of Russell, the volume of distribution method of Fawdry, and a terminal slope method were less reliable, especially at low (0-60 ml/min) GFRs. The renal uptake method of Gates correlated poorly to the standards at all GFR levels even when corrected for body surface area or blood volume. The Russell two point and Jackson urinary GFR's can be used as complementary techniques and are recommended as primary methods of scintigraphic GFR determination.
Asunto(s)
Tasa de Filtración Glomerular , Compuestos de Organotecnecio , Ácido Pentético , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Evaluación como Asunto , Femenino , Humanos , Riñón/diagnóstico por imagen , Riñón/fisiología , Riñón/fisiopatología , Masculino , Métodos , Persona de Mediana Edad , Cintigrafía , Valores de Referencia , Pentetato de Tecnecio Tc 99mAsunto(s)
Ácido Yoxáglico , Pene/diagnóstico por imagen , Humanos , Masculino , Papaverina , RadiografíaRESUMEN
Absolute ethanol was used to perform nine transcatheter embolizations and 21 direct percutaneous puncture embolizations in eight patients with unresectable vascular malformations. Six patients had arteriovenous malformations and two patients had hemangiomas. Four of these patients had undergone unsuccessful surgery, and the other four were not considered candidates for operation. All large complex symptomatic vascular malformations (SVMs) required multiple embolizations that were staged procedures. Ethanol embolotherapy, performed according to strict techniques, has proved efficacious in the management of SVMs.