title: [Role of echo-color Doppler in the monitoring of the transplanted kidney].
abstract: Renal allografts are subject to many vascular complications. Doppler US is a non-invasive technique that can evaluate many of the potential complications related to renal allografts, such as rejection, cyclosporine toxicity, acute tubular necrosis, renal artery stenosis, renal vein thrombosis. Changes in the resistive index (RI), which accurately reflects renal vascular impedance, have been employed in the evaluation of renal allograft dysfunction. A review of the literature shows conflicting results with values of sensitivity and specificity ranging from 0.96 and 0.97 to 0.46 and 0.80, respectively. It seems that an increase in the RI is a nonspecific sign in determining the underlying abnormality due to the unique features of the vascular bed of each allograft which results in poor correlative values for single isolated measurements of RI. Serial studies, employing a baseline value, can be useful in the follow-up of graft dysfunction.
authors.affiliation: Istituto di Medicina Interna e Fisiopatologia Medica, Ospedale Policlinico IRCCS Milano.
authors.forename: L
authors.initials: L
authors.lastname: Burdick
authors.forename: D
authors.initials: D
authors.lastname: Castagnone
authors.forename: R
authors.initials: R
authors.lastname: Rivolta
authors.forename: R
authors.initials: R
authors.lastname: Mangiarotti
authors.forename: C
authors.initials: C
authors.lastname: Tosi
mesh_terms: D003116:Color; D005500:Follow-Up Studies; D006084:Graft Rejection / Q000000981:diagnostic imaging; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects / Q000000981:diagnostic imaging*; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000209:etiology; D012680:Sensitivity and Specificity; D014463:Ultrasonography
vernacular_title: Ruolo dell'eco-color-Doppler nel monitoraggio del rene trapiantato.