ObjectiveTo investigate the value of the change trend of lactic acid level 24 h after operation in predicting the complications of upper gastrointestinal ulcer perforation. MethodsA total of 167 patients with upper digestive tract ulcer perforation who underwent surgical treatment in Shougang Hospital of Peking University from March 2021 to June 2023 were selected as the study objects, and were divided into mild to moderate group (n=117) and severe group (n=50) according to the severity of the disease. General data and lactic acid levels in 24 h after surgery were compared between the two groups. In addition, according to whether the patients had complications or not, they were divided into a group without complications (n=119) and a group with complications (n=48). The general data of the two groups were compared. A combined model was constructed, and Cox regression model was used to analyze the relationship between the change of lactic acid level at 24 h after operation and the complications of infection. Logistic regression model combined with restricted cubic spline model was used to analyze the dose-response relationship between lactic acid level and infection complications in patients with upper gastrointestinal ulcer perforation 24 h after operation. Log-binomial model was used to analyze the risk effect of complication types on lactic acid levels in patients with upper gastrointestinal ulcer perforation. ResultsAt 8, 16 and 24 h after operation, lactic acid levels in both groups (mild to moderate group and severe group) were significantly lower than before operation, and lactic acid level in mild to moderate group was significantly lower than that in severe group (P<0.05). Repeated measurement ANOVA showed that the time effect, intergroup effect and interaction effect of lactic acid levels were significantly different between the two groups (P<0.05). There were significant differences in exhaust time, postoperative hospital stay, C-reactive protein, lactic acid level and red blood cell distribution width between the complicated group and the uncomplicated group (P<0.05). The combined model showed that each longitudinal increase of 1 mmol/L in lactic acid level 24 h after operation, was associated with a 4% increased risk of infection complications. The limit cubic spline map showed that lactic acid level at 24 h after operation was 4.22 mmol/L as the critical point of the dose-response relationship in the infection complications of patients with upper gastrointestinal ulcer perforation. Log-binomial model analysis results showed that when lactic acid level ≥4.22 mmol/L, patients with upper gastrointestinal ulcer perforation in the complication group had the highest risk of abdominal infection. The risk ratios (95%CI) before and after adjustment were 2.09 (1.25, 2.64), 2.16 (1.28, 2.05) and 2.20 (1.32, 2.63) times of those in the uncomplicated group, and the risk ratios of different lactic acid levels were statistically significant before and after adjustment (P<0.05). ConclusionLactic acid level increased 24 h after operation in patients with upper gastrointestinal ulcer perforation is closely related to infection complications, and has a high predictive value for infection complications in patients with upper gastrointestinal ulcer perforation.
Objective To analyze the correlation between frailty syndrome and lower limb motor function in hospitalized elderly patients. Methods Convenience sampling method was used to select inpatients aged 65 and above from the Center of Gerontology and Geriatrics of West China Hospital, Sichuan University between December 2022 and May 2023. The FRAIL Scale, Short Physical Performance Battery (SPPB), and Timed Up and Go Test (TUGT) were used to evaluate the degree of frailty and lower limb motor function, and to explore the correlation between frailty and lower limb motor function. Results A total of 501 elderly patients were included, including 325 males (64.9%) and 176 females (35.1%); 256 cases of frailty (51.1%), 161 cases of pre-frailty (32.1%), and 84 cases of non-frailty (16.8%). The incidence of frailty in hospitalized elderly male patients was higher than that in female patients (P<0.05); The incidence of frailty in patients aged 80-99 was higher than that in patients aged 65-79 (P<0.05). The Spearman correlation analysis results showed that all dimensions of SPPB were negatively correlated with frailty (P<0.001), while TUGT was positively correlated with frailty (r=0.776, P<0.001). The results of multiple linear regression analysis showed that the worse the motor function of the lower limbs, the higher the debilitation score. Conclusions Frailty syndrome in hospitalized elderly patients is closely related to lower limb motor function. Lower limb motor function assessment can be used to predict the onset of frailty in clinical practice, and interventions to improve lower limb motor function can be used to improve the frailty of elderly patients.