OBJECTIVES: The neutrophil gelatinase-associated lipocalin (NGAL) level following non cardiac surgery is useful for predicting acute kidney damage. However, there is insufficient conclusive evidence as to whether NGAL can be used to predict subclinical AKI following non-cardiac surgery. METHODS: We measured serum NGAL and creatinine levels in 41 patients following non-cardiac surgery, and the increase of these variables was used to predict acute decreases in kidney function. RESULTS: The study included a total of 41 patients. The mean age was 64.65 ± 17.09 years. The serum creatinine concentration was increased 12 hours after surgery. The mean SD serum NGAL decreased after 4hours after surgery and continued to decrease after 12 hours after surgery. The incidence of subclinical AKI determined by the 4 hour serum NGAL level was 10(24.4%), and the incidence of serum creatinine elevation was 0(0.0%). The incidence of subclinical AKI determined by the 12 hour serum NGAL level was 4(9.8%), and the incidence of subclinical AKI determined by serum creatinine was 4(9.8%). The elevation of NGAL was more rapid than the serum creatinine 4 hours after surgery. CONCLUSIONS: We verified the usefulness of the serum NGAL level as a predictive factor for subclinical AKI after non-cardiac surgery.
Acute Kidney Injury* ; Creatinine ; Humans ; Incidence ; Kidney ; Lipocalins ; Neutrophils* ; Prognosis* ; Thoracic Surgery

This report examines a patient with pulmonary adenocarcinoma that developed on a previous lesion from microscopic polyangiitis. A 59-year-old woman had been diagnosed with microscopic polyangiitis in October of 1988 based on her clinical symptoms and serological tests, which were positive for anti-neutrophil cytoplasmic antibodies. Her glomerulonephritis had been well controlled with low-dose prednisolone. She presented in October of 2005 with vague chest discomfort and dyspnea on exertion. Physical examination was unremarkable. A non-contrast computed tomography (CT) scan of the chest showed patch ground-glass opacity at the right lower lobe of the lung. Because we did not believe the lesion to be a definite malignancy, we decided to follow up with chest images over a short interval. During the 18 months following the images, the lesion did not change. However, the opacity of the lesion increased slightly over the last two months, and a non-contrast CT scan of the chest was therefore performed. A CT scan showed persistent ground-glass opacity with a slightly solid portion. To diagnose the previous finding and possibly to provide treatment, a right lower lobectomy of the lung via video-assisted thoracoscopic surgery was performed. The pathologic review of the resected lung revealed an adenocarcinoma, stage pT1N0. After one year, fluorodeoxyglucose positron emission tomography was performed, and no evidence of a recurrent malignancy was found.
Adenocarcinoma ; Antibodies, Antineutrophil Cytoplasmic ; Dyspnea ; Female ; Follow-Up Studies ; Glomerulonephritis ; Humans ; Lung ; Microscopic Polyangiitis ; Middle Aged ; Physical Examination ; Positron-Emission Tomography ; Prednisolone ; Serologic Tests ; Thoracic Surgery, Video-Assisted ; Thorax