[摘 要] 目的：探讨复发/转移性鼻咽癌（NPC）接受含PD-1单抗免疫治疗的临床特征和预后影响因素。方法：回顾性分析2019年3月至2024年7月期间南部战区总医院确诊的95例NPC患者的临床资料和外周血生化及免疫学指标。预后分析采用Kaplan-Meier曲线，组间比较使用Log-rank检验，采用Cox比例风险模型进行单因素和多因素分析。结果：95例患者中男性81例，女性14例，中位年龄49.72岁（16~74岁），Ⅳ期91例（95.79%），所有患者均采用免疫治疗，联合或不联合化疗方案治疗，中位无进展生存期（mPFS）为10.5个月，客观缓解率（ORR）70.53%，疾病控制率（DCR）89.47%，接受含铂治疗方案患者PFS相对更长，且差异有统计学意义。紫杉醇 + 顺铂 + 氟尿嘧啶（TPF）对比吉西他滨 + 顺铂（GP）和紫杉醇 + 顺铂（TP）显示出更长的PFS，但差异无统计学意义。不同PD-1单抗治疗组间的PFS未显示出有统计学意义的差异。单因素及多因素Cox回归分析结果显示，肿瘤复发状态、初始血浆EBV感染状态、治疗周期数、基线外周血SII是复发/转移性NPC患者接受PD-1抑制剂治疗疗效预测的独立相关因素（均P < 0.05），并且非复发患者、初始血浆EBV DNA阳性、接受 ≥ 4治疗周期、基线外周血SII < 772.81的患者接受PD-1抑制剂治疗预后相对更好。结论：在接受PD-1抑制剂治疗的复发/转移性NPC患者中，非复发患者、初始血浆EBV DNA阳性、≥ 4治疗周期且外周血SII < 772.81者PFS相对更长，可早期识别免疫治疗效果不佳患者并精准干预。

Stroke is the leading cause of death and disability among adults in China， and its common complications include digestive system abnormalities， cognitive impairment， depression， stroke-associated pneumonia， and hemiplegia. The combination of traditional Chinese and Western medicine has great potential in treating post-stroke complications. Xinglou Chengqitang （XLCQT） is a representative prescription of alleviating the disease in the upper part by treating the lower part. It has definite therapeutic effect and high safety. Clinically， XLCQT is often used to treat stroke and its complications. However， the quantity and quality of clinical trials of XLCQT in treating post-stroke complications need to be improved. Additionally， since the basic research is weak， the material basis and multi-target mechanism for the efficacy of this prescription are unknown. This article reviews XLCQT in terms of the pharmacodynamic basis， medicinal properties， safety evaluation， and progress in clinical research and mechanisms in treating post-stroke complications. This article summarizes 22 key active ingredients of XLCQT in treating acute stroke complicated with syndrome of phlegm heat and fu-organ excess. Among these key active ingredients， resveratrol， kaempferol， luteolin， chrysoeriol， apigenin， （+）-catechin， and adenosine have good pharmacokinetic properties and high bioavailability. The mechanisms of XLCQT in treating post-stroke complications are complex， including inflammatory response， brain-gut axis， hypothalamic-pituitary-adrenal （HPA） axis， intestinal flora， neurotrophic factors， autophagy， oxidative stress， and free radical damage. This review helps to deeply understand the pharmacodynamic basis and mechanisms of XLCQT in treating post-stroke complications and provides a theoretical basis for the clinical application of XLCQT against post-stroke complications and the development of drugs.

Objective: To investigate the epidemiological characteristics, outcome patterns, and management strategies for blood donors with a positive direct antiglobulin test (DAT). Methods: A retrospective analysis was conducted on donation data from 808 386 donors from 2013 to 2023, focusing on those whose blood was discarded due to DAT positivity. Follow-up was performed on 125 DAT-positive donors, and 98 blood samples were collected. The samples were re-tested for DAT, DAT typing (IgG/C3d), and unexpected antibody screening using both the tube method and the microcolumn gel method. Results: Epidemiological characteristics: Retrospective data revealed 147 DAT-positive blood donors, yielding a positivity rate of 1/5 500. The DAT positivity rate using the tube method was 0.118‰ (49/416 893), lower than that of the microcolumn gel method at 0.25‰ (98/391 493). Among DAT-positive individuals, 44.2% (65/147) exhibited agglutination intensity<2+. Outcome analysis: The proportion of donors with positive DAT test results that converted to negative was 54.1% (53/98), with a conversion interval ranging from 8 to 117 months (mean 49.9 months). All donors in the negative conversion group had a previous DAT intensity<2+, whereas 95.6% (43/45) of the non-negative conversion group had intensity ≥2+ (P<0.001). Unexpected antibodies (anti-E, anti-M, etc.) were detected in 18 cases. Methodological differences: Review of results revealed 35 cases positive by both the DAT tube assay and microcolumn gel method. An additional 10 cases were positive by only one method: 5 were positive only by the tube assay, and 5 were positive only by the microcolumn gel method. Clinical validation: Among 14 DAT-positive donors who became negative and donated blood again, the clinical infusion efficacy of red blood cell products could be assessed in 10 cases, with 9 cases demonstrating effective infusion. Conclusion: Some DAT-positive blood donors may naturally convert to negative status, with the intensity of previous test results potentially serving as a key predictive factor for conversion. It is recommended to employ a combined approach of tube-based and microcolumn gel-based methods for retesting, concurrently screening for irregular antibodies. A tentative tiered management strategy is proposed: individuals with DAT intensity <2+ should be deferred for 12 months before retesting, while those with ≥2+ intensity should be permanently deferred.

To explore the in vitro and in vivo synergistic effect of paclitaxel in combination with co-listin against MDREscherichia coli(E.coli)and the corresponding mechanism of synergism,we measured the MICs of PTX alone and combination of PTX+antimicrobial drugs on E.coli and Staphylococcus aureus(S.aureus)by broth microdilution method.Then,checkerboard method was used to determine the FICI of PTX+COL combination,and the antibacterial synergies of PTX and COL was further explored through analyzing the membrane permeability and efflux pump ac-tivity.The MICs results showed that the MIC values of PTX alone against E.coli(G5,E25)and S.aureus S238 were＞1 024 mg/L and 512 mg/L,respectively.Meanwhile,we found that the anti-bacterial activity of COL against E.coli could be significantly enhanced(MIC decreased by 4 to 8 times)when used in combination with PTX.The checkerboard test showed that the FICI values of PTX combined with COL for E.coli(G5,E25)were 0.31 and 0.29,respectively,indicating a synergistic antibacterial effect on these strains.The FICI values of PTX combined with COL for E.coli G21,S.aureus(S237 and S238)were 0.51,0.75 and 0.53,respectively,indicating additive effects on these strains.In the mouse abdominal infection model,the combination group could ex-tremely significantly reduce the bacterial burden of E.coli in abdominal compared to the COL or PTX alone group(P＜0.001).The analysis of membrane permeability and efflux pump activity showed that PTX combined with COL significantly increased the inner and outer membrane per-meability of E.coli(G5 and E25),and markedly inhibited the efflux pumping activity of E.coli,when compared that of PTX and COL alone(P＜0.01).The above results indicated that the com-bination of PTX and COL could exert a synergistic in vivo and in vitro antibacterial effect on COL-resistant E.coli through increasing bacterial membrane permeability and inhibiting efflux pump activity.This study provides the theoretical foundation for the development of a novel combi-nation regimen for the treatment of MDR E.coli infection.

Objective:To explore the practical experience in perineal protection and assessment by midwives in general hospitals, so as to provide reference for further reducing the episiotomy rate for non-medical indications.Methods:From December 2021 to January 2022, applying a phenomenological research methodology, 14 midwives from four general hospitals in Anhui Province were selected through purposive sampling combined with maximum difference sampling for semi-structured interviews. Colaizzi 7-step analysis method was used to summarize, analyze and refine themes.Results:Three themes and 10 sub-themes were extracted, namely the motivation for perineal protection (policy orientation, reduction of childbirth injuries, maternal needs), decision-making factors for perineal protection (maternal and infant safety, maternal perineal condition, work experience, work environment, maternal cooperation), and techniques for perineal protection (patience, controlling the speed of fetal head delivery) .Conclusions:Midwives' perineal protection and assessment practices are influenced by multiple factors. Hospital administrators are advised to enhance midwife training, establish system processes to reduce perineal injuries, unify perineal assessment standards, and rationally control episiotomy rates while fully prioritizing the maternal and infant safety.

Objective To select the appropriate batch length and quality control procedure for the blood cell analysis project of the Women and Children's Hospital of Leshan with an online calculation tool of internal quality control frequency,and explored the measurement frequency of blood cell analysis laboratory quality control. Methods The coefficient of variation of blood cell analysis internal quality control of the Women and Children's Hospital of Leshan from April to December 2023 was collected as the imprecision of the project.The results of the laboratory participating in the 2023 National Health Commission inter-laboratory quality evaluation blood count experiment were used to evaluate the bias of each item. The allowable total error (TEa) for blood cell analysis items specified in WS/T 406-2012.Data were entered into the Westgard In-House Quality Control Frequency Calculator to calculate 10 corresponding batch lengths and different candidate statistical quality control (SQC) procedures online,including multi-rule,single-rule,and quality control concentration levels from 1 to 4.Combined with the actual situation of the laboratory,the SQC program with relatively simple quality control rules and relatively long batch length was selected. Results In blood cell analysis,13s,N=2 rule was used for WBC,HGB,MCV,MCH,MCHC,PLT,corresponding to the batch length of 1000. 13s/22s/R4s,N=2 rule was used for HCT,the corresponding batch length was 563,and the quality control frequency was 1 time per day. RBC was selected 13s/22s/R4s,N=2 rule,the corresponding batch length was 151,and the quality control frequency was 2 times a day or priority was given to improving the detection performance. Conclusion The Westgard internal quality control frequency calculator is an easy-to-use tool that allows select the right batch length and SQC program for lab,which can adjust the SQC protocol to needs.

Objective To observe the effect of preoperative exercise on consciousness,lung function and recovery efficiency of patients undergoing ventriculoperitoneal shunt.Methods A total of 54 patients undergoing elective ventriculoperitoneal shunt in Beijing Bo'ai Hospital from October,2024 to March,2025 were randomly divided into control group(n=27)and prerehabilitation group(n=27).The control group received routine preoperative treatment and nursing,while the prerehabilitation group additionally received exercise for two weeks.They were assessed with Coma Recovery Scale-Revised(CRS-R),and observed diaphragm mobility with sonography,before and three days after operation;and the time to first ambulation after surgery and length of stay in hospital were compared between two groups.Results CRS-R scores improved in both groups after operation(|t|>5.451,P<0.001),and it was greater in the prehabilitation group than in the control group(t=2.812,P<0.01).CRS-R subscale scores improved in auditory and motor functions in the control group(|Z|>2.000,P<0.05),and they were improved in auditory,visual,motor,verbal and arousal functions in the prehabilitation group(|Z|>2.282,P<0.01).CRS-R subscale scores were greater in motor and arousal in the prehabilitation group than in the control group(|Z|>2.320,P<0.05).Diaphragmatic mobility improved in the prehabilitation group(t=-7.782,P<0.001),and it was better than in the control group(t=2.044,P<0.05).The time to first ambulation after surgery and length of stay in hospital were shorter in the prehabilitation group than in the control group(|t|>3.654,P<0.01).Conclusion Preoperative exercise for patients undergoing elective ventriculoperitoneal shunt can improve the consciousness after operation,especially the level of motor and arousal,as well as the lung function,and accelerate the recovery process.

Objective To observe the effect of preoperative exercise on consciousness,lung function and recovery efficiency of patients undergoing ventriculoperitoneal shunt.Methods A total of 54 patients undergoing elective ventriculoperitoneal shunt in Beijing Bo'ai Hospital from October,2024 to March,2025 were randomly divided into control group(n=27)and prerehabilitation group(n=27).The control group received routine preoperative treatment and nursing,while the prerehabilitation group additionally received exercise for two weeks.They were assessed with Coma Recovery Scale-Revised(CRS-R),and observed diaphragm mobility with sonography,before and three days after operation;and the time to first ambulation after surgery and length of stay in hospital were compared between two groups.Results CRS-R scores improved in both groups after operation(|t|>5.451,P<0.001),and it was greater in the prehabilitation group than in the control group(t=2.812,P<0.01).CRS-R subscale scores improved in auditory and motor functions in the control group(|Z|>2.000,P<0.05),and they were improved in auditory,visual,motor,verbal and arousal functions in the prehabilitation group(|Z|>2.282,P<0.01).CRS-R subscale scores were greater in motor and arousal in the prehabilitation group than in the control group(|Z|>2.320,P<0.05).Diaphragmatic mobility improved in the prehabilitation group(t=-7.782,P<0.001),and it was better than in the control group(t=2.044,P<0.05).The time to first ambulation after surgery and length of stay in hospital were shorter in the prehabilitation group than in the control group(|t|>3.654,P<0.01).Conclusion Preoperative exercise for patients undergoing elective ventriculoperitoneal shunt can improve the consciousness after operation,especially the level of motor and arousal,as well as the lung function,and accelerate the recovery process.

Objective:To explore the practical experience in perineal protection and assessment by midwives in general hospitals, so as to provide reference for further reducing the episiotomy rate for non-medical indications.Methods:From December 2021 to January 2022, applying a phenomenological research methodology, 14 midwives from four general hospitals in Anhui Province were selected through purposive sampling combined with maximum difference sampling for semi-structured interviews. Colaizzi 7-step analysis method was used to summarize, analyze and refine themes.Results:Three themes and 10 sub-themes were extracted, namely the motivation for perineal protection (policy orientation, reduction of childbirth injuries, maternal needs), decision-making factors for perineal protection (maternal and infant safety, maternal perineal condition, work experience, work environment, maternal cooperation), and techniques for perineal protection (patience, controlling the speed of fetal head delivery) .Conclusions:Midwives' perineal protection and assessment practices are influenced by multiple factors. Hospital administrators are advised to enhance midwife training, establish system processes to reduce perineal injuries, unify perineal assessment standards, and rationally control episiotomy rates while fully prioritizing the maternal and infant safety.

Objective:To investigate the association between dietary diversity and the risk of major adverse cardiovascular events (MACE) after percutaneous coronary intervention (PCI) in patients with coronary heart disease (CHD) .Methods:A total of 553 patients diagnosed with CHD and undergoing PCI in the Department of Cardiology at the Second Affiliated Hospital of Harbin Medical University between May and November 2023 were enrolled using a convenience sampling method. A Semi-Quantitative Food Frequency Questionnaire was used to assess patients' dietary intake after PCI, and the Dietary Diversity Score (DDS) was calculated. Patients were followed up for one year to determine the incidence of MACE.Results:History of hypertension, history of hyperlipidemia, body mass index, use of antiplatelet agents, use of diuretics, triglycerides, smoking index and DDS were identified as factors influencing the occurrence of MACE after PCI ( P<0.05) . Among these, higher dietary diversity had a protective effect against MACE. Conclusions:After PCI, patients with lower DDS experienced MACE more frequently than those with higher scores. Increased dietary diversity can effectively help prevent MACE in patients after PCI.