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J Korean Soc Emerg Med > Volume 25(4); 2014 > Article
Journal of The Korean Society of Emergency Medicine 2014;25(4): 463-470.
Availability of hs-C-reactive protein as Predictive Value of Acute Pyelonephritis with Patient of Urolithiasis
Jin Wook Park, Sang Chan Jin, Sung Jin Kim, Woo Ik Choi
1Department of Emergency Medicine, Dongsan Medical Center, Keimyoung University School of Medicine, Daegu, Korea. emtaegu@dsmc.or.kr
2Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
ABSTRACT
PURPOSE:
The aim of this study was to determine early predictive value of acute pyelonephritis and urosepsis in patients with urolithiasis in the emergency department.
METHODS:
We retrospectively reviewed medical records of patients who visited the emergency department and were diagnosed with urolithiasis by computed tomography for three years. Patients with urolithiasis were grouped according to the presence of computed tomography (CT) findings with acute pyelonephritis. In baseline characteristics, laboratory and CT findings of the two groups were compared. Group 1 was defined as urolithiasis without acute pyelonephritis and group 2 was defined as urolithiasis with acute pyelonephritis. In addition, we compared the sepsis versus non-sepsis and percutaneous nephrostomy (PCN) versus non-PCN group in Group 2 for analysis of the hs-CRP level of each group.
RESULTS:
The total number of urolithiasis patients was 744. Among the patients, 84 (11.3%) had urolithiasis with acute pyelonephritis in CT findings. Age, sex, history of diabetes, history of urolithiasis, size of stone, duration of symptom, body temperature, blood pressure, heart rate, respiratory rate, leukocyte count, existence of pyuria, and hs-CRP differed significantly between the two groups, respectively. In multivariate logistic regression analysis, age, history of urolithiasis, existence of pyuria, and hs-CRP were shown to be independent predictors affecting acute pyelonephritis in patients with urolithiasis. The area under the receiving operator characteristics (ROC) curve for CRP was 0.820 (95% CI, 0.754-0.886) and leukocyte count was 0.631 [95% confidence interval (CI), 0.542-0.721]. Sepsis and PCN groups showed significantly higher hs-CRP level than non-sepsis and non-PCN groups.
CONCLUSION:
There were some independent predictive values of urolithiasis with acute pyelonephritis. It can be useful in early detection of acute pyelonephritis or sepsis, and it can be helpful in making treatment plans for patients of urolithiasis.
Key words: Urolithiasis, Pyelonephritis, C-reactive protein
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