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Abstract

¼­·Ð
½ÅÁÖ»ç´Â ½Å±â´ÉÀÇ Æò°¡, »óºÎ¿ä·ÎÆó»öÀÇ Áø´Ü, Ä¡·á¹æħÀÇ °áÁ¤ ¹× Ä¡·áÈ¿°úÀÇ ÆÇÁ¤ µî¿¡
À¯¿ëÇÑ °Ë»ç¹ýÀÌÁö¸¸ ½ÃÇà¹æ¹ýÀ̳ª Æǵ¶¹æ¹ý¿¡ µû¶ó¼­ ´Ù¸¥ °á°ú¸¦ ³ªÅ¸³¾ ¼ö ÀÖ´Ù ½Å¿ì¿ä
°üÀÌÇàºÎÆó»ö µîÀÇ »óºÎ¿ä·ÎÆó»öȯÀÚ¿¡¼­ ½ÃÇàÇÑ ÀÌ´¢¼º½ÅÁÖ»ç»ó(99mTc-DTPA ÀÌ¿ë) Æó»ö
ÃøÀÇ ºÐ¸®½Å±â´ÉÀÌ ´õ ³ô°Ô °üÂûµÇ´Â ¼ÒÀ§ '¸ð¼øµÈ °úÁ¤»ó ±â´É(contradictory supranormal
function)'ÀÌ ÀÚÁÖ º¸°íµÇ°í ÀÓ»ó¿¡¼­ Á÷Á¢ Á¢ÇÒ ¼ö Àִµ¥ ½ÇÁ¦·Î ¹Ý´ëÃø ½Å±â´É¿¡ ºñÇØ ´õ
¾çÈ£ÇÑÁö °Ë»ç»óÀÇ ¿À·ù·Î ÀÎÇÑ À߸øµÈ °á°úÀÎÁö ÀÇ°ßÀÌ ºÐºÐÇÏ´Ù. ½ÅÁÖ»ç»ó ºÐ¸® ½Å±â´ÉÀº
»óºÎ¿ä·ÎÆó»ö ƯÈ÷ ½Å¿ì¿ä°üÀÌÇàºÎÆó»öÀÇ Ä¡·á¹æħÀ» °áÁ¤ÇÏ´Â Áß¿äÇÑ ÁöħÀÇ ÇϳªÀ̱⠶§
¹®¿¡ ÀÌ Çö»óÀÌ ¹«¾ùÀ» ÀǹÌÇÏ´ÂÁö ÆľÇÇÏ´Â °ÍÀº ¸Å¿ì Áß¿äÇÏ´Ù. '¸ð¼øµÈ °úÁ¤»ó ±â´É'¿¡
°üÇÑ ³í¶õÀº °á±¹ ½ÅÁÖ»ç»ó ºÐ¸®½Å±â´ÉÀÌ ½ÇÁ¦ÀÇ ½Å±â´ÉÀ» ¾ó¸¶³ª Á¤È®ÇÏ°Ô ³ªÅ¸³»´Â°¡ ÇÏ
´Â ¹®Á¦¿¡ ±Í°áµÈ´Ù. µû¶ó¼­ ÀÌ ¹®Á¦¿Í °ü·ÃµÈ ³í¶õÀ» Ç®±â À§Çؼ­´Â ¾çÃø½ÅÀÇ ½ÇÁ¦ ½Å±â´É
À» ¾Ë¾Æ³»¼­ ºÐ¸®½Å±â´É°ú ºñ±³ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù.
ÀÌ¿¡ ÀúÀÚ´Â »óºÎ¿ä·ÎÆó»öȯÀÚµéÀ» ´ë»óÀ¸·Î ÀÌ´¢¼º½ÅÁֻ縦 ½ÃÇàÇÏ¿© ºÐ¸®½Å±â´ÉÀ» ÃøÁ¤
Çß°í À̾ Æó»ö½Å¿¡ °æÇǽŷ缳ġ¼úÀ» ½ÃÇà ÈÄ ´Ù½Ã ÀÌ´¢¼º½ÅÁֻ縦 ½ÃÇàÇÏ¿© Æó»öÀ¸·Î
ÀÎÇÑ ¼ö½ÅÁõÀÌ ±³Á¤µÈ »óÅ¿¡¼­ ºÐ¸®½Å±â´ÉÀ» ÀçÃøÁ¤ÇÏ¿´À¸¸ç ½Å·ç°ü, ÀÚ¿¬¹è´¢ ¹× ¹æ±¤³»
À¯Ä¡µÈ FoleyÄ«Å×Å͸¦ ÅëÇØ 24½Ã°£´¢¸¦ °¢°¢ ºÐ¸® Áý´¢ÇÏ¿© °¢ ½Å´ÜÀ§ÀÇ ³»ÀμºÅ©·¹¾ÆÄ¡´Ñ
û¼ÒÄ¡ ¹× û¼ÒÄ¡ºñÀ²À» ÃøÁ¤Çß°í ÀÌ Å©·¹¾ÆƼ´Ñû¼ÒÄ¡¸¦ ½ÇÁ¦ ½Å±â´ÉÀ» ³ªÅ¸³»´Â ±âÁØÄ¡·Î
»ï°í ½ÅÁÖ»ç»ó ºÐ¸®½Å ±â´ÉÀÌ ½ÇÁ¦ ½Å±â´ÉÀÇ »ó´ëÀû ºñÀ²À» ¾î´À Á¤µµ Á¤È®È÷ ¹Ý¿µÇÏ´ÂÁö
¾Ë°íÀÚ ÇßÀ¸¸ç '¸ð¼øµÈ °úÁ¤»ó ±â´É'ÀÇ ½Çü¸¦ ±Ô¸íÇÏ°íÀÚ º» ¿¬±¸¸¦ ÀüÇâÀûÀ¸·Î ½ÃÇàÇÏ¿´
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Purpose: Split renal function on diuretic renography has been considered to be a good
tool for evaluating renal function, selecting treatment modalities and assessing efficacy
of surgery in hydronephrosis, especially in ureteropelvic junction(UPJ) obstruction.
However, contradictory supranormal function on renography has provided controversy
with urologists. Is the phenomenon the result of fact or artifact? The authers thought
that contradictory supranormal renal function measured with 99mTc-DTPA
Is fundamentally related with a question. How accurately does the split renal function
test represent the real renal function, namely, glomerular filtration rate(GFR) ?
To know relation of split renal function with real renal function(GFR) and to disclose
clinical significance of contradictory supranormal renal function on diuretic renal scan, a
prospective study was performed.
Materials and Methods: Diuretic renography was done in 14patients with upper urinary
tract obstruction including UPJ obstruction, ureteral stone and lower urethral obstruction.
Afer the first diuretic renography using 99mTc-DTPA percutaneous
nephrostomy was performed on affected kidney, which was followed by the second
diuretic renography. Endogenous creatinine clearance tests were done on the patients.
Urine was collected through the nephrostomy tube, self voiding or indwelling Foley
catheter, respectively So the endogenous creatinine clearance was determined respectively
on both the renal unit. Also the endogenous creatinine clearance ratio of affected kidney
was determined to compare with split renal function on renography.
Results: In 7patients, ratio of endogenous creatinine clearance on affected kidney was
less than 40%. In the other 7patients, the ratio was more than 48%. In patients with
less than 40% of endogenous creatinine clearance ratio on affected kidney, split renal
function was overestimated by 10.3% to 27.5%(19.5¡¾4.9%) comparing to endogenous
creatinine clearance ratio. In the other 7patients split renal function had a little difference
from endogenous creatinine clearance ratio (4.5¡¾2.5%). The endogenous creatinine
clearance ratio was not closely related with split renal function(correlation coefficients:
0.65). Split renal function of the first renography was closely related with that of the
second renography(correlation coefficients: 0.88). Contradictory supranormal function
occurred in 4cases. In 2cases it was real finding, in the other it was not.
Conclusions: It appears that split renal function is overestimated in poor renal function
and split renal function is closely related with real renal function in good renal function
slate. Supranormal renal function is real finding in part, not in part. Clinical significance
of split renal function should be cautiously and basically reevaluated through further
study.

Å°¿öµå

99mTc-DTPA renal scan; Split renal function; Endogenous creatinine clearance;

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