Objective To analyze the epidemiological characteristics and disease burden of liver cancer in Guangdong Province in 2020, and to provide a scientific foundation for the development of regionalized prevention and control strategies for liver cancer. Methods According to the cancer registry data of Guangdong Province, the incidence, mortality and age-standardized rate by Chinese standard population in 2020 were calculated to analyze the epidemiological characteristics of liver cancer. The disability adjusted life years (DALYs), year of life loss (YLL), year of lived with disability (YLD), and cause-eliminated life expectancy were used to assess the disease burden of liver cancer. Results In 2020, the crude incidence rate and the age-standardized incidence rate of liver cancer in Guangdong Province were 27.79/100 000 and 20.84/100 000，respectively, and the crude mortality rate and the age-standardized mortality rate of liver cancer were 25.49/100,000 and 17.64/100 000, respectively. The total DALY and DALY rate of liver cancer in Guangdong Province were 515 311 person-years and 513.83/100 000, respectively. After eliminating the causes of death from liver cancer, the life expectancy in Guangdong Province increased from 84.60 years to 84.99 years. All indicators consistently demonstrated that the burden of liver cancer was higher in males than that in females, and the burden of liver cancer was higher in rural areas than that in urban areas. Conclusion Liver cancer in Guangdong Province exhibits a high incidence, mortality and disease burden level in 2020. There are obvious differences of gender, age and region in cancer burden. It is necessary to strengthen liver cancer screening and diagnosis and treatment in men, the elderly and those in rural areas to reduce the burden of liver cancer gradually in Guangdong Province.

Chronic heart failure （CHF） is a complex clinical syndrome caused by ventricular dysfunction， with mitochondrial energy metabolism disorder being a critical factor in disease progression. Heart-Yang deficiency syndrome， as the core pathogenesis of CHF， persists throughout the disease course. Insufficiency of heart-Yang leads to weakened warming and propelling functions， resulting in the accumulation of phlegm-fluid， blood stasis， and dampness. This eventually causes Qi stagnation with phlegm obstruction and blood stasis with water retention， forming a vicious cycle that exacerbates disease progression. According to the theory of reinforcing Yang， the clinical experience of the traditional Chinese medicine （TCM） master Tang Zuxuan in treating CHF with heart-Yang deficiency syndrome， and achievements from molecular biological studies， this study innovatively proposes an integrated research framework of "TCM syndrome differentiation and staging-mitochondrial metabolism mechanisms-intervention with Yang-reinforcing prescriptions" which is characterized by the integration of traditional Chinese and Western medicine. Heart-Yang deficiency syndrome is classified into mild （Stage Ⅰ-Ⅱ）， severe （Stage Ⅲ）， and critical （Stage Ⅳ） stages. The study elucidates the precise correlations between the pathogenesis of each stage and mitochondrial metabolism disorders from theoretical， pathophysiological， and therapeutic perspectives. The mild stage is characterized by impaired biogenesis and substrate-utilization imbalance， corresponding to heart-Yang deficiency and phlegm-fluid aggregation. Linggui Zhugantang and similar prescriptions can significantly improve the expression of peroxisome proliferator-activated receptor gamma co-activator-1α（PGC-1α）/silent information regulator 2 homolog 1 （SIRT1） and ATPase activity. The severe stage centers on oxidative stress and structural damage， reflecting Yang deficiency with water overflow and phlegm-blood stasis intermingling. At this stage， Zhenwu Tang and Qiangxin Tang can effectively mitigate oxidative stress damage， increase adenosine triphosphate （ATP） content， and repair mitochondrial structure. The critical stage arises from calcium overload and mitochondrial disintegration， leading to the collapse of Yin-Yang equilibrium. At this stage， Yang-restoring and crisis-resolving prescriptions such as Fuling Sini Tang and Qili Qiangxin capsules can inhibit abnormal opening of the mitochondrial permeability transition pore （MPTP）， reduce cardiomyocyte apoptosis rate， and protect mitochondrial function. By summarizing the characteristics of mitochondrial energy metabolism disorders at different stages of CHF， this study explores the application of the theory of reinforcing Yang in treating heart-Yang deficiency syndrome and provides new insights for the clinical diagnosis and treatment of CHF.

ObjectiveTo explore the mechanism of ventricular remodeling mediated by the p38 mitogen-activated protein kinase （MAPK）/nuclear factor kappa B （NF-κB） signaling pathway in the rat model of chronic heart failure （CHF） with heart-blood stasis syndrome， as well as the intervention effect of Danhong injection. MethodsIn vivo experiment： SPF-grade male SD rats were assigned via the random number table method into 4 groups： Sham operation， model， captopril （8.8 mg·kg^-1）， and Danhong injection （6.0 mL·kg^-1）. The model of CHF with heart-blood stasis syndrome was established by abdominal aortic constriction， and the sham operation group only underwent laparotomy without constriction. All the groups were treated continuously for 15 days. The tongue color of rats was observed. Echocardiography， hemorheology， heart mass index （HMI）， and left ventricular mass index （LVMI） were measured. Hematoxylin-eosin （HE） staining and Masson staining were performed to observe the pathological and fibrotic changes of the myocardial tissue. Enzyme-linked immunosorbent assay （ELISA） was employed to quantify the levels of N-terminal pro-B-type natriuretic peptide （NT-proBNP）， interleukin-6 （IL-6）， angiotensin Ⅱ （AngⅡ）， tumor necrosis factor-α （TNF-α）， and Creactive protein （CRP） in the serum， as well as the levels of matrix metalloproteinase-2 （MMP-2） and matrix metalloproteinase-9 （MMP-9） in the myocardial tissue. Western blot was used to quantify the protein levels of p-p38 MAPK/p38 MAPK and p-NF-κB p65/NF-κB p65 in the myocardial tissue. In vitro experiment： H9C2 cardiomyocytes were treated with 1×10^-6 mol·L^-1 AngⅡ to establish a model of myocardial hypertrophy. H9C2 cardiomyocytes were allocated into normal， model， inhibitor + Danhong injection， Danhong injection （20 mL·L^-1）， and inhibitor （SB203580， 5 μmol·L^-1） groups. CCK-8 assay was used to detect the viability of H9C2 cardiomyocytes. Rhodamine-labeled phalloidin staining was used to reveal the area of cardiomyocytes. Real-time PCR was performed to determine the mRNA levels of atrial natriuretic peptide （ANP） and brain natriuretic peptide （BNP）. Western blot was used to assess the protein levels of p-p38 MAPK/p38 MAPK and p-NF-κB p65/NF-κB p65. ResultsIn vivo experiment： Compared with the sham operation group， the model group showed purplish-dark tongue with decreased R， G， B values of the tongue surface （P<0.01）， increased whole blood viscosity （at low， medium， and high shear rates） （P<0.01）， decreased left ventricular ejection fraction （LVEF） and left ventricular fractional shortening （LVFS） （P<0.01）， increased left ventricular end-diastolic diameter （LVIDd）， left ventricular end-systolic diameter （LVIDs）， and left ventricular posterior wall thickness at end-diastole （LVPWd） （P<0.01）， raised LVMI and HMI （P<0.01）， and elevated levels of NT-proBNP， TNF-α， IL-6， and CRP in the serum and MMP-2 and MMP-9 in the myocardial tissue （P<0.01）. The HE and Masson staining of the myocardial tissue showed compensatory myocardial hypertrophy， fibrosis， and massive inflammatory cell infiltration in the model group. Additionally， the model group presented up-regulated protein levels of p-p38 MAPK/p38 MAPK and p-NF-κB p65/NF-κB p65 in the myocardial tissue （P<0.01）. Compared with the model group， each administration group showed increased R， G， B values of the tongue surface （P<0.05， P<0.01）， decreased whole blood viscosity （at low， medium， and high shear rates） （P<0.05， P<0.01）， increased LVEF and LVFS （P<0.01）， decreased LVIDd， LVIDs， and LVPWd （P<0.05， P<0.01）， declined LVMI and HMI （P<0.05， P<0.01）， and lowered levels of NT-proBNP， TNF-α， IL-6， and CRP in the serum and MMP-2 and MMP-9 in the myocardial tissue （P<0.01）. HE and Masson staining showed alleviated compensatory myocardial hypertrophy， reduced fibrosis， and decreased expression of p-p38 MAPK/p38 MAPK and p-NF-κB p65/NF-κB p65 in the myocardial tissue （P<0.01）. In vitro experiment： When the concentration of Danhong injection reached 20 mL·L^-1， the survival rate of H9C2 cardiomyocytes was the highest （P<0.01）. Compared with the normal group， the model group showed up-regulated mRNA levels of ANP and BNP （P<0.01）， increased relative cell surface area （P<0.01）， and raised protein levels of p-p38 MAPK/p38 MAPK and p-NF-κB p65/NF-κB p65 （P<0.01）. Compared with the model group， each administration group showed down-regulated mRNA levels of ANP and BNP （P<0.01）， reduced relative cell surface area （P<0.05， P<0.01）， and down-regulated protein levels of p-p38 MAPK/p38 MAPK and p-NF-κB p65/NF-κB p65 （P<0.05， P<0.01）. ConclusionDanhong injection can regulate ventricular remodeling through the p38 MAPK/NF-κB pathway， thereby exerting a protective effect on the rat model of CHF with heart-blood stasis syndrome.

Objective To explore the the detection of MMP-2,-7,-9,and-12 enzymatic activity using the CEACAM1-derived fluorescent peptide substrate Site 84,investigating the application of substrate Site 84 to distinguishing between MMP-2 and MMP-9 in the gelatinase spectrum of MMPs.Methods The fluorescent enzymatic method was employed to observe the detection of MMP-2,-7,-9,and-12 enzymatic activity using substrate Site 84;further observations were made on the sensitivity and specificity of substrate Site 84 to enzymatic activity of MMP-2 and MMP-9 within the gelatinase spectrum;the kinetic parameters(Km and Kcat)of the enzymatic reaction between substrate Site 84 and MMP-2 were obtained.Results Using Site 84 as a substrate,enzymic kinetics curves for MMP-12,-7,-2 were obtained,but no enzymatic activity curve for MMP-9 was observed.Furthermore,Site 84 specifically detected the enzymatic activity of MMP-2 within the gelatinase spectrum,capable of detecting low concentration(0.6 μM)of MMP-2 enzymatic activity,but no obvious enzymatic reaction was observed for high concentration(6 μM)of MMP-9;the kinetics parameters for the enzymatic reaction between Site 84 and MMP-2 were Km=315 μM,Kcat/Km=2 565/MS.Conclusion The CEACAM1-derived substrate Site 84 serves as a novel fluorescent peptide substrate,enabling the acquisition of enzymatic activity curves for MMP-12,-7 and-2,and specifically detecting the enzymatic activity of MMP-2 within the MMP gelatinase spectrum.

Objective To investigate the value of repeat renal biopsy in the treatment and prognosis of nephrotic syndrome(NS)and acute kidney injury(AKI)following immunosuppressive therapy in patients with lupus nephritis(LN). Methods A retrospective analysis was conducted for the clinicopathological data and follow-up records of LN patients undergoing repeat renal biopsy at Peking Union Medical College Hospital from January 1,2009 to December 31,2021. Results A total of 76 patients(55 females,72.4%)were included in this study,with the mean age at the first biopsy being(29.0±10.4)years,the median inter-biopsy interval of 4.0(2.0,7.0) years,and the median total follow-up duration of 7.5(5.0,13.8)years.Pathological transformation occurred in 46(60.5%)patients,and 2 patients had comorbid diabetic nephropathy.At repeat renal biopsy,50(65.8%) patients presented NS.These patients demonstrated lower estimated glomerular filtration rate(eGFR)(P<0.001),higher chronicity index(CI)(P=0.029),and higher complement C3(P<0.001)and C4(P<0.001)levels than those with NS at the first renal biopsy(n=50).Among the 28(36.8%) patients with AKI at repeat renal biopsy,8(28.6%)experienced acute exacerbation of chronic renal insufficiency.These patients exhibited higher serum creatinine level(P=0.002),C4 level(P=0.033),CI(P=0.042),and prevalence of thrombotic microangiopathy(P=0.046)than the patients showing AKI at the first renal biopsy(n=16),while the activity index(AI)showed no significant difference(P=0.051).Over 50% of NS and AKI patients underwent treatment modifications post-repeat renal biopsy,with clinical remission rates comparable to those after the first renal biopsy(both P>0.05).Elevated CI(≥5,P=0.001)and serum creatinine(≥140 μmol/L,P<0.001)at repeat renal biopsy were identified as independent risk factors for poor prognosis.The patients with AKI at repeat renal biopsy had higher incidence of endpoint events than the non-AKI patients(P=0.015).Neither AKI at the first renal biopsy nor NS at both biopsies had significant associations with prognosis. Conclusions Repeat renal biopsy reveals not only sustained high disease activity but also accelerates chronic progression in LN patients,which underscore its critical role in guiding the therapy for severe LN post-immunosuppression.AKI,CI≥5,and serum creatinine ≥140 μmol/L at repeat renal biopsy are strongly associated with poor prognosis.
Humans ; Lupus Nephritis/drug therapy* ; Female ; Retrospective Studies ; Adult ; Male ; Prognosis ; Biopsy ; Kidney/pathology* ; Acute Kidney Injury/pathology* ; Nephrotic Syndrome/pathology* ; Glomerular Filtration Rate ; Young Adult ; Immunosuppressive Agents/therapeutic use* ; Middle Aged

Creutzfeldt-Jakob disease(CJD)is a rapidly progressive and fatal neurodegenerative disorder caused by prions,with certain infectivity and iatrogenic transmission risks.With the rapid progress and application of new dia-gnostic biomarkers and detection methods,as well as the construction and improvement of surveillance and reporting systems,the detection of CJD in patients domestically and internationally has shown an increasing trend year by year.Due to its long incubation period and heterogeneity of early symptoms,early identification and diagnosis of the disease is difficult,increasing the risk of transmission within medical institutions.Currently,there is a lack of con-sensus on the infection prevention and control of CJD.In order to timely identify and diagnose CJD as well as effec-tively block its transmission in medical institutions,this consensus summarizes 15 clinical concerns and formulates 24 specific recommendations based on the latest domestic and international research findings and clinical evidence,as well as combines with clinical practice,aiming to standardize healthcare-associated infection prevention and control measures for CJD and reduce its transmission risk in medical institutions.

Acute ST-segment elevation myocardial infarction(STEMI)and ruptured abdominal aortic aneurysm(AAA)are both critical conditions that pose severe threats to human life and health.When these two conditions coexist,the mortality rate is extremely high.This case report presents a middle-aged male patient who was admitted to the emergency department due to syncope.An electrocardiogram indicated STEMI,and a full aortic angiogram confirmed a ruptured AAA.Through collaborative efforts between the cardiology and vascular surgery departments,a combined interventional procedure was performed:first,an endovascular stent graft was placed for the AAA,followed by coronary stent implantation.The procedure was completed successfully,and the patient was transferred to the intensive care unit postoperatively.However,the patient's condition deteriorated the following day,resulting in a poor prognosis.This article aims to discuss the therapeutic dilemmas and treatment strategy selection when these two conditions coexist,as well as to explore the potential reasons for the poor prognosis in this case.To some extent,it provides a reference for clinical decision-making in such patients and offers insights into how to reduce mortality in this high-risk population.

Objective:To determine the actual metastasis rate of paracolic lymph nodes (PCN) more than 10 cm proximal to rectal tumors and explore the significance of PCN dissection in the prognosis of patients with rectal cancer. ?Methods:This was a prospective observational cohort study. The clinical data of 457 consecutive patients with rectal cancer who underwent radical surgery at the Colorectal Tumor Center of West China Hospital, Sichuan University from January 2015 to May 2022 were included. Inclusion criteria: (1) Pathologically confirmed rectal adenocarcinoma (anal margin ≤ 12 cm); (2) R0 resection was performed with a proximal margin ≥ 10 cm (measured on the in vivo specimen during surgery after intestinal mobilization); (3) For stage IV patients, only those with resectable metastatic lesions by R0 were included; (4) Patients who completed the full course of neoadjuvant therapy (TNT) must meet the surgical window of 8-12 weeks after radiotherapy. Exclusion criteria: tumors located more than 15 cm from the anal margin, synchronous multiple primary colorectal cancers, positive tumor margins, preoperative imaging suggesting lateral lymph node metastasis (LLNM), presence of Lynch syndrome or familial adenomatous polyposis, emergency surgery, recurrence after rectal cancer surgery, T4b tumors requiring combined organ resection, previous radiotherapy and chemotherapy for non-rectal cancer, and those with cardiac, pulmonary, renal and other organ dysfunction that could not tolerate surgery. After standard total mesorectal excision (TME), the proximal intestinal tube was transected at a level more than 10 cm above the lesion, and then intestinal anastomosis or enterostomy was completed. The distance from the tumor edge was marked and measured in vivo during the operation, and lymph nodes were harvested from the fresh specimen. Patients with PCN metastasis beyond 10 cm proximal to the tumor were classified into the positive lymph node group (pPCN group), while those without PCN metastasis beyond 10 cm proximal to the tumor were classified into the negative lymph node group (nPCN group). The differences in clinicopathological characteristics, overall survival (OS) and disease-free survival (DFS) between the two groups were compared, and risk factor analysis and survival analysis of pPCN were performed.Results:There were 16 cases (3.5%) in the pPCN group, 15 cases (3.3%) had central lymph node metastasis; the nPCN group included 441 cases. When comparing the baseline characteristics between the pPCN group and the nPCN group, there was no statistically significant difference in other aspects except that the cN stage was more advanced in the pPCN group ( P=0.006) (all P>0.05). The number of positive mesenteric lymph nodes in the pPCN group was higher than that in the nPCN group ( P<0.001), and the proportion of patients with a total number of harvested lymph nodes ≥12 and the number of lymph nodes with a short diameter >5 mm were both higher (all P<0.05). The proportion of patients with positive lymph nodes within 10 cm and the number of positive lymph nodes within 10 cm were also higher in the pPCN group (both P<0.001). Similar to the clinical TNM staging, the proportions of patients with pT3 and N2 stages, as well as the incidence of poorly differentiated tumors (G3, G4) were higher in the pPCN group ( P<0.001). The results of multivariate analysis showed that among the preoperative pathological characteristic variables, the presence of positive lymph nodes within 10 cm (OR=14.869, 95%CI: 2.993-73.858, P=0.001) and low tumor differentiation grade (OR=7.189, 95%CI: 2.091- 24.714, P=0.002) were independent risk factors for pPCN. The median follow-up time of the patients in this group was 63 (0-63) months. No local recurrence occurred in the pPCN group, and the 5-year OS was 50.0%, which was significantly lower than 78.0% in the nPCN group (HR=2.496, 95%CI: 1.263-4.930, P=0.008). The 3-year DFS was 43.8%, also significantly lower than 77.7% in the nPCN group (HR=2.950, 95%CI:1.488-5.846, P=0.002). Multivariate Cox prognostic analysis suggested that age ≥65 years (HR=2.041, 95%CI: 1.375-3.031, P<0.001), female (HR=1.838, 95%CI: 1.171-2.884, P=0.008), tumor length ≥3 cm (HR=1.747, 95%CI: 1.076-2.834, P=0.024), more advanced cT stage (HR=2.865, 95%CI: 1.234-6.653, P=0.014), and cM1 (HR=4.368, 95%CI: 2.480-7.694, P<0.001) were independent risk factors affecting OS. No neoadjuvant therapy (HR=0.636, 95%CI: 0.413-0.980, P=0.040) and cM1 (HR=5.556, 95%CI: 3.335-9.256, P<0.001) were independent risk factors affecting DFS. pPCN showed a tendency to be an independent risk factor for DFS (HR=1.942, 95%CI: 0.966-3.906, P=0.063). Conclusion:The incidence of pPCN is higher than expected, and the prognosis of patients is poor. Patients with high-risk factors may benefit from extended proximal intestinal resection (>10 cm) to avoid residual positive PCN, thereby reducing local recurrence.

BACKGROUND: The use of inserted sham acupuncture as a placebo in randomized controlled trials (RCTs) is controversial, because it may produce specific effects that cause an underestimation of the effect of acupuncture treatment. OBJECTIVE: This systematic survey investigates the magnitude of insert-specific effects of sham acupuncture and whether they affect the estimation of acupuncture treatment effects. SEARCH STRATEGY: PubMed, Embase and Cochrane Central Register of Controlled Trials were searched to identify acupuncture RCTs from their inception until December 2022. INCLUSION CRITERIA: RCTs that evaluated the effects of acupuncture compared to sham acupuncture and no treatment. DATA EXTRACTION AND ANALYSIS: The total effect measured for an acupuncture treatment group in RCTs were divided into three components, including the natural history and/or regression to the mean effect (controlled for no-treatment group), the placebo effect, and the specific effect of acupuncture. The first two constituted the contextual effect of acupuncture, which is mimicked by a sham acupuncture treatment group. The proportion of acupuncture total effect size was considered to be 1. The proportion of natural history and/or regression to the mean effect (PNE) and proportional contextual effect (PCE) of included RCTs were pooled using meta-analyses with a random-effect model. The proportion of acupuncture placebo effect was the difference between PCE and PNE in RCTs with non-inserted sham acupuncture. The proportion of insert-specific effect of sham acupuncture (PIES) was obtained by subtracting the proportion of acupuncture placebo effect and PNE from PCE in RCTs with inserted sham acupuncture. The impact of PIES on the estimation of acupuncture's treatment effect was evaluated by quantifying the percentage of RCTs that the effect of outcome changed from no statistical difference to statistical difference after removing PIES in the included studies, and the impact of PIES was externally validated in other acupuncture RCTs with an inserted sham acupuncture group that were not used to calculate PIES. RESULTS: This analysis included 32 studies with 5492 patients. The overall PNE was 0.335 (95% confidence interval [CI], 0.255-0.415) and the PCE of acupuncture was 0.639 (95% CI, 0.567-0.710) of acupuncture's total effect. The proportional contribution of the placebo effect to acupuncture's total effect was 0.191, and the PIES was 0.189. When we modeled the exclusion of the insert-specific effect of sham acupuncture, the acupuncture treatment effect changed from no difference to a significant difference in 45.45% of the included RCTs, and in 40.91% of the external validated RCTs. CONCLUSION The insert-specific effect of sham acupuncture in RCTs represents 18.90% of acupuncture's total effect and significantly affects the evaluation of the acupuncture treatment effect. More than 40% of RCTs that used inserted sham acupuncture would draw different conclusions if the PIES had been controlled for. Considering the impact of the insert-specific effect of sham acupuncture, caution should be taken when using inserted sham acupuncture placebos in RCTs. Please cite this article as: Luo XC, Liu JL, Yao MH, Chen YM, Fan AY, Liang FR, Zhao JP, Zhao L, Zhou X, Zhong XY, Yang JH, Li B, Zhang Y, Sun X, Li L. Specific effect of inserted sham acupuncture and its impact on the estimation of acupuncture treatment effect in randomized controlled trials: A systematic survey. J Integr Med. 2025; 23(6):630-640.
Acupuncture Therapy/methods* ; Humans ; Randomized Controlled Trials as Topic ; Placebo Effect ; Placebos ; Treatment Outcome

Objective This study aims to explore the impact of esketamine combined with hip pericapsular nerve block on perioperative stress reactions,immune function,cognitive function,and postoperative analgesic efficacy in elderly patients undergoing total hip replacement.Methods From February 2022 to February 2025,110 elderly patients who received total hip arthroplasty in the hospital were enrolled as the research participants.They were allocated into a control group and an observation group by means of a random number table,with 55 cases in each group.All patients received total hip arthroplasty.Patients in the control group were given 20 mL of ropivacaine combined with pericapsular nerve block anesthesia of the hip joint,while those in the observation group were given esketamine combined with pericapsular nerve block anesthesia of the hip joint.The blood pres-sure,heart rate(HR),oxygen saturation(SpO?),and respiratory rate(RR)of the two groups were compared at admission(T1),immediately after anesthesia(T2),skin incision(T3),30 minutes after surgery initiation(T4),incision suture(T5),and immediately after surgery completion(T6).Both groups underwent detection,assess-ment,and comparison of immune function indices,serum stress markers,and cognitive function scores before the operation and 3 days post-surgery.The Visual Analogue Scale(VAS)pain scores at 3,6,and 9 hours after surgery were contrasted between the two groups.Additionally,statistical analysis was performed on the incidence of adverse reactions in both groups.Results The HR,mean arterial pressure(MAP),SpO?,RR,and bispectral index(BIS)of the two groups from T1 to T6 were compared using repeated measures analysis of variance.The results showed that:(1)There were statistically significant differences in HR,MAP,SpO?,and BIS at different time points(F=118.378,70.002,44.910,242.439,all P<0.001).(2)There were statistically significant differences in HR,MAP,SpO?,and BIS between the observation group and the control group(F=206.643,195.586,93.077,3.953,P<0.001,P<0.001,P<0.001,P=0.049).(3)There were statistically significant differences in the changing trends of HR,MAP,SpO?,RR,and BIS between the two groups(F=18.583,14.158,23.350,4.883,6.698,all P<0.001).At 3 days after surgery,the levels of CD4? and CD4?/CD8? in the observation group were lower than those in the control group(P<0.05).The levels of malondialdehyde(MDA),superoxide dismutase(SOD),and cortisol in the observation group were lower than those in the control group during surgery and immediately after surgery(P<0.05).The Montreal Cognitive Assessment(MoCA)scores and Mini-Mental State Examination(MMSE)scores of both groups decreased 3 days after surgery,and those in the observation group were higher than those in the control group(P<0.05).The VAS pain scores of the observation group at 3,6,9 and 12 hours after surgery were lower than those of the control group.The incidence of adverse reactions in the observation group was lower than that in the control group(12.73%vs.29.09%,P<0.05).Conclusion Esketamine combined with pericapsular nerve block of the hip joint can significantly inhibit the perioperative stress response in elderly patients undergoing total hip arthroplasty,optimize the postoperative anal-gesic effect,and reduce the incidence of adverse reactions.