Objective To investigate the pathogenic bacteria and risk factors of urinary tract infection (UTI) in elderly patients with type 2 diabetic mellitus (T2DM), and construct a prediction model. Methods Elderly patients with T2DM who were admitted to General Hospital of Western Theater Command from January 2020 to March 2023 were selected. They were divided into the observation group (100 cases) and the control group (82 cases) according to the presence or absence of UTI. Pathogenic bacteria was detected, and influencing factors were analyzed. A prediction model was constructed, and its predictive value was evaluated. Results Escherichia coli was the main pathogenic bacteria of UTI in elderly patients with T2DM. There were significant differences between the two groups in terms of age, 24 h urinary albumin (UALB), serum creatinine (Scr) , blood urea nitrogen (BUN), fasting blood glucose (FBG), gender, complications, course of T2DM , length of hospital stay and serum albumin (ALB) (P<0.05). Logistic regression analysis found that advanced age, long course of T2DM, FBG ≥11.1mmol/L and high 24 hUA1b/Scr level were risk factors for UTI in elderly patients with T2DM, and high ALB level was a protective factor. The receiver operating characteristic (ROC) curve analysis showed that the area under the curve (AUC) of the constructed model to predict UTI in patients with T2DM was 0.978. The sensitivity and specificity were 91.00% and 97.56%. Conclusion Escherichia coli are main pathogenic bacteria of UTI in elderly patients with T2DM. UTI is related to factors such as patient age, course of T2DM and FBG. The prediction model constructed based on these factors is of high value in predicting UTI in elderly patients with T2DM. It is worthy of promotion in diagnosis and treatment.

Objective To study the significance and value of imaging typing by analyzing the correlation between contrast-enhanced ultrasound perfusion imaging typing and vascularization in patients with primary hepatocellular cancer.Methods The early enhanced arterial phase reflecting angioarchitecture,and the size and edge of enhanced tumor closely related to microvessel distribution, position and density, were observed and analyzed in 89 patients (113 lesions).All the cases were pathologically proved, and some received immunohistochemisty staining and the microvessel density were recorded.Results The perfusion imagings were classified into 4 types according to changes on contrast-enhanced ultrasound,dendritic,mixed,circular and net-like type.Atypia vessels were commonly seen in dendritic type,and Ⅲ and Ⅳ accounted for 79.1%.The microvessel density was higher than the other types.The circular type was relatively regular and Ⅲ and Ⅳ accounted for 12.5%.The microvessel density was lower than the other types.Combined with the contrast-enhanced ultrasound perfusion imaging and compared with pathological grading,growing methods and microvessel density, the dendritic type was characterized by infiltrative growth, and had strong invasion tendency.The circular type was characterized by expansive growth.And the other two types were characterized by transitional type.Conclusions Contrast-enhanced ultrasound can reflect the angioarchiteeture, the microvessel density and the position,and it is related to the pathological grading and growing methods.