Furosemide-augmented intravenous urography: results in essential hypertension

Effect of Furosemide on Renal Size: Ultrasonic Characterization of Renovascular Hypertension

“…However, re sponses of such magnitude were very short lived. The fail ure of Talner et al [8] to detect consistent effects of similar magnitude during urography -they found an average en largement of 7.0% -was probably due to an inadequate number of recordings over an insufficient time period, since he obtained only a single record of kidney size 10 min after furosemide injection. Indeed, we found that the time re quired for maximal renal enlargement to develop varied widely in individuals, so that serial recordings were re quired, in addition to the baseline ones, to document them fully.…”

“…This knowledge became clinically meaningful when it was observed that the intravenous administration of a loop diuretic in the course of urographic examination causes bilateral renal swelling in patients with essential hypertension, whereas in patients with unilateral renal artery stenosis such an effect is blunted on the affected side [5], On the basis of these observations, some authors pro posed the use of the so-called 'diuretic augmented excretory urography' as an improved method for the screening of renovascular hypertension [5][6][7]. Other investigators [8], however, failed to confirm the above findings and the method has not entered into widespread use.The differing results reported so far might be due to dif ferences in the study protocols, and/or to limitations inher ent in urography itself. As to the latter possibility, it has been shown that the administration of the contrast agent causes some enlargement of the kidney [3,9], which might well interfere with the effect of the loop diuretic on kidney size.…”

Renovascular Hypertension

“…However, TALNER et coll. (74) found positive washout urograms in 25 per cent of a group with essential hypertension.…”

Avaliação do tratamento cirúrgico da obstrução da junção pielo-ureteral por meio de pieloplastia vídeo-laparoscópica robótica assistida

“…A cirurgia obedeceu à mesma técnica da pieloplastia laparoscópica assistida pelo robô relatada inicialmente por Yohannes (75) , com pequenas alterações técnicas já descritas por nosso grupo (78) , constituindo dos seguintes passos: Estes estudos foram complementados através de urografia excretora associada ao uso de diurético, de modo semelhante ao proposto previamente por outros autores (82)(83)(84)(85)(86) . Foi considerado que um aumento no volume da pelve renal após a administração do contraste e furosemida (dose de 40 mg via endovenosa) em comparação ao exame sem diurético sugeria a presença de obstrução (82) .…”

“…O tempo de cirurgia (em minutos) foi cronometrado a partir da incisão da pele até o fechamento da ferida operatória. Os pacientes foram submetidos a avaliação radiológica pós-operatória através de urografia excretora com administração de diurético (40 mg de furosemida por via endovenosa) após a aplicação do contraste endovenoso (82)(83)(84)(85)(86) . Na presença de dilatação pielocalicinal no exame pós-operatório uma comparação ao exame pré-operatório foi realizada.…”