Perioperative changes in serum creatinine after gynecologic surgery.
OBJECTIVE
The purpose of this study was to prospectively determine the normal range of postoperative changes in serum creatinine levels when bilateral ureteral patency was confirmed by cystoscopy.


METHODS
A total of 187 consecutive patients who had undergone major gynecologic surgery were evaluated prospectively. All patients had undergone perioperative cystoscopy to evaluate for ureteral patency, and creatinine levels had been determined before and 24 hours after surgery.


RESULTS
The mean change in serum creatinine level was 0.01 mg/dL, and the changes for the central 95% ranged from -0.2 to 0.3 mg/dL. With a previously defined cutoff value of an increase of >0.2 mg/dL after operation to indicate ureteral obstruction, specificity and negative predictive values (when compared with cystoscopic findings) were 98% and 100%, respectively.


CONCLUSIONS
Creatinine levels change minimally during the immediate postoperative period in the absence of ureteral compromise. If bilateral ureteral patency was demonstrated after operation in our population, creatinine level elevations were always <0.3 mg/dL.
Walter
Andrew J
AJ
Department of Obstetrics and Gynecology, David Grant Medical Center, Travis Air Force Base, Calif., USA.
Magtibay
Paul M
PM
Morse
Abraham N
AN
Hammer
Robert A
RA
Hentz
Joseph G
JG
Magrina
Javier F
JF
D003404:Creatinine / Q000097:blood*; D003558:Cystoscopy; D005260:Female; D013509:Gynecologic Surgical Procedures; D006801:Humans; D011184:Postoperative Period; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D014513:Ureter / Q000473:pathology / Q000503:physiopathology*; D014517:Ureteral Obstruction / Q000097:blood
D003404:Creatinine