Press S M, Smith A D
Department of Urology, Long Island Jewish Medical Center, New Hyde Park, New York, USA.
Urology. 1995 May;45(5):753-7. doi: 10.1016/S0090-4295(99)80078-8.
To determine the incidence of negative hematuria in patients with acute urinary lithiasis presenting to the emergency room with flank pain.
We retrospectively reviewed all 140 patients who presented with flank pain to the Long Island Jewish Medical Center emergency department from January 1, 1992, through December 31, 1992, and underwent intravenous urogram (IVU). We then calculated the incidence of negative hematuria in patients with acute urinary lithiasis (AUL) diagnosed by IVU based on the complete urinalysis alone or in combination with the urine dipstick test for blood.
We found a 14.5% incidence of negative hematuria in patients with AUL when looking at the urinalysis alone. To our knowledge, this has never been reported in the literature. We also found that by considering a negative combination (urinalysis plus urine dipstick test) as a new definition of negative hematuria, the incidence of negative hematuria in patients with AUL was only 5.5% (P < 0.031).
This is the first report in the literature documenting the incidence of negative hematuria in patients with AUL to be 14.5%. With the addition of the combination of urinalysis and urine dipstick test for hematuria, the incidence is only 5.5% and, therefore, represents a low yield when evaluated by IVU.
确定因胁腹疼痛到急诊室就诊的急性尿路结石患者中血尿阴性的发生率。
我们回顾性分析了1992年1月1日至1992年12月31日期间因胁腹疼痛到长岛犹太医疗中心急诊科就诊并接受静脉肾盂造影（IVU）的所有140例患者。然后，我们根据单独的完整尿液分析或结合尿液潜血试纸检测，计算经IVU诊断为急性尿路结石（AUL）患者中血尿阴性的发生率。
仅看尿液分析时，我们发现AUL患者中血尿阴性的发生率为14.5%。据我们所知，这在文献中从未有过报道。我们还发现，将阴性组合（尿液分析加尿液潜血试纸检测）作为血尿阴性的新定义时，AUL患者中血尿阴性的发生率仅为5.5%（P < 0.031）。
这是文献中首次报道AUL患者中血尿阴性的发生率为14.5%。加上尿液分析和尿液潜血试纸检测血尿的组合后，发生率仅为5.5%，因此，经IVU评估时检出率较低。
