The effect of fluid intake on renal length measurement in adults

Abstract

Oral fluid intake causes a statistically significant increase in renal length. This observation should be taken into consideration when renal length measurements are clinicallly important.

Sonographic Measurement of Diuretic-Induced Renal Length Changes

“…Renal length and cortical thickness are routine measurements in the diagnosis and follow‐up of most disease conditions involving the kidneys 4 – 7 . Kantarci et al 8 showed that renal length measurements might increase after oral fluid intake. In an MR urographic study, renal length changes after diuretic injection, which has effects similar to those of hydration on kidneys, were shown to be correlated with renal function 3 …”

Does hydration matter in ultrasound measurement of renal lengths in children?

“…We read with great interest the article entitled "The effect of fluid intake on renal-length measurement in adults" by Kantarci et al [1]. The authors have statistically made clear that the intake of oral liquid by adults shows profound increase (approximately 7%) in kidney length.…”

“…The authors have statistically made clear that the intake of oral liquid by adults shows profound increase (approximately 7%) in kidney length. Furthermore, the effect of oral-liquid intake of abnormal or diseased kidneys is unknown and needs researching [1].…”

“…The authors have statistically made clear that the intake of oral liquid by adults shows profound increase (approximately 7%) in kidney length. Furthermore, the effect of oral-liquid intake of abnormal or diseased kidneys is unknown and needs researching [1].From this perspective, we researched whether oral hydration has an effect on kidney length between healthy children and those diagnosed with urinary tract infection (UTI). If it did have an effect, we researched whether there is a profound difference from the aspect of the increase in kidney dimension between healthy children and those diagnosed with UTI.…”

Relative length of human kidney as more precise measuring of normal kidney

“…Oni, takođe, opisuju značajno opadanje apsolutne i relativne dužine bubrega i kod muška-raca i kod žena posle 60. godina života i u zaključku ističu da u ovom dobu određivanje relativne dužine bubrega nije od primarnog značaja zbog uticaja pola, telesne visine i starenja [13]. U novijoj literaturi je naznačena i greška koja se čini ako se pristupi merenju dužine bubrega kod ispitanika neposredno posle ekscesivnog unosa tečnosti, pa je s tim u vezi izračunato da bubrezi u tom slučaju pokazuju za oko 7% veću dužinu [14], što bi trebalo izbeći tokom ispitivanja veličine bubrega. Takođe, opisan je i uticaj prevremenog rođenja (pre navršene 32 nedelje gestacije) koje će uticati na smanjenje dužine bubrega i broja nefrona kod mladih adultnog doba, što može uticati na validnost rezultata istraživanja [15].…”