In this task, you are given a passage which has a question and the context. You have to generate an answer to the question based on the information present in the context.

Context: Acute kidney injury (AKI) is an established indicator of all-cause mortality in a coronary care unit (CCU), and evaluating the risks of renal dysfunction can guide treatment decisions. In this study we used the Society of Thoracic Surgeons (STS) score to predict the incidence of AKI in CCU patients who had not undergone coronary artery bypass surgery (CABG) after a cardiac angiogram.', 'The study cohort comprised 126 patients diagnosed with 2 or 3 coronary vessels disease who did not receive CABG during their hospital course. This study was performed in the CCU of a tertiary referral university hospital between September 2012 and August 2013. The STS score was evaluated with adjustment in all patients and the outcomes of the risk of mortality, morbidity, or mortality and renal failure were selected for predicting assessment. Furthermore, the performance of the STS scores was compared with that of other scoring systems.', 'A total of 28.5% (36 of 126) of the patients had AKI of varying severity. For predicting AKI, the STS renal failure score was excellent, with areas under the receiver operating characteristic curve of 0.851 0.039, p < 0.001. When compared with other scoring systems, the STS renal failure score demonstrated the highest discriminatory power, the most favorable Youden index, and the highest overall correctness of prediction.\Question: Do society of Thoracic Surgeons score predicts kidney injury in patients not undergoing bypass surgery?
The STS score is an effective tool for predicting AKI in patients with coronary artery disease who have not undergone CABG. Frequent monitoring of serum creatinine level or early application of AKI biomarkers are warranted for STS renal failure 5.7% or greater.

Context: To test the hypothesis that effective pulmonary capillary blood flow can be a useful indicator for estimating appropriate oxygenation and ventilation during one-lung ventilation in lung surgery.', 'Prospective data analysis.', 'A 770-bed general teaching hospital.', '15 ASA physical status II and III patients undergoing elective lung surgery.', 'Patients received general and thoracic epidural anesthesia and underwent lung operation with one-lung ventilation.', 'We measured effective pulmonary capillary blood flow by a partial CO2 rebreathing method and oxygenation parameters during two-lung ventilation before surgery, during one-lung ventilation, and during two-lung ventilation after lung surgery.', 'The effective pulmonary capillary blood flow index significantly decreased by 31.6%, which was associated with a significant decrease in arterial oxygen tension (PaO2). The pulmonary shunt fraction increased to 46.3% during one-lung ventilation. During two-lung ventilation, after chest closure, effective pulmonary capillary blood flow index divided by heart rate (i.e., effective pulmonary blood stroke flow index) was still significantly lower than that seen during two-lung ventilation before thoracotomy. There were significant correlations between effective pulmonary capillary blood flow, pulmonary blood stroke flow index, and PaO2.\Question: Is a noninvasive partial carbon dioxide rebreathing technique for measurement of pulmonary capillary blood flow also a useful oxygenation monitor during one-lung ventilation?
Effective pulmonary capillary blood flow index and effective pulmonary blood stroke flow index are useful indicators for determining appropriate oxygenation therapy during one-lung ventilation.

Context: To determine whether polymorphism of NOS2A promoter -969G>C is associated with the portal hypertension of liver cirrhosis.', 'A case control study covering 106 patients with liver cirrhosis due to hepatitis B virus(HBV) in comparison with 108 controls was performed using PCR-restriction fragment length polymorphism. The NOS2A mRNA and protein expression in liver cirrhosis tissues were detected by reverse transcription-PCR and Western blot. The recombinant plasmids of NOS2A promoter luciferase reporter gene were constructed and were transfected transiently into HepG2 cells for analyzing the functional activity of the promoter.', 'The frequencies of the C allele and GC genotype at NOS2A promoter -969G>C were significantly higher in portal hypertension group (16.9%, 33.8%) than in control group(8.8%, 17.6%)(P<0.05), and positive correlation (r=0.18) and association (OR=2.42) were noted. There was no significant difference in frequency distribution between single liver cirrhosis group and control group(P>0.05). The expressions of NOS2A mRNA and protein in liver cirrhosis tissues were more increased in C allele carriers with liver cirrhosis than in G allele carriers with liver cirrhosis, which led to higher functional activity of the promoter. Multivariate logistic regression analysis revealed that NOS2A polymorphism at promoter -969G>C is an independent novel risk factor for the occurrence of portal hypertension in patients with liver cirrhosis.\Question: Is [ Polymorphism of NOS2A promoter -969 ( G > C ) associated with portal hypertension of liver cirrhosis ]?
The polymorphism of NOS2A promoter -969(G>C) is associated with portal hypertension of liver cirrhosis, which results in functional activity increase of NOS2A promoter and is an independent risk factor for portal hypertension.