Objective:To explore the efficacy of a new classification system proposed by us applied to the treatment of irreducible intertrochanteric femoral fractures.Methods:A retrospective study was conducted to analyze the clinical data of the 225 patients with irreducible intertrochanteric femoral fracture who had been treated between January 2023 and November 2024 at Zhengzhou Orthopedic Hospital (78 cases), The First Affiliated Hospital of Zhengzhou University (61 cases), Zhengzhou Central Hospital Affiliated to Zhengzhou University (28 cases), Zhengzhou Hospital of Traditional Chinese Medicine (34 cases), and Puyang Hospital of Traditional Chinese Medicine (24 cases). There were 86 males and 139 females, with an age of (74.8±7.9) years. Satisfactory reduction had failed in all patients even after 3 attempts at closed reduction. The patients were divided into 2 groups based on whether the new classification system proposed by our research team in our previous study was used to guide the treatment. The observation group of 116 cases were treated through an extended incision at the head of the intramedullary nail for reduction and fixation under the guidance of the new classification system while the control group of 109 cases were treated by reduction and fixation through a direct anterolateral incision. The operation time, intraoperative blood loss, fracture healing time, Harris hip scores at 3 months after operation and the last follow-up, and incidence of complications were compared between the 2 groups.Results:No statistically significant differences were observed in the baseline characteristics between the 2 groups, indicating comparability ( P>0.05). All patients were followed up for (12.6±2.5) months after operation. The operation time, intraoperative blood loss, and fracture healing time [(39.5±9.7) minutes, (106.6±54.8) mL, and (3.1±0.7) months] in the observation group were significantly less than those in the control group [(70.2±11.1) minutes, (322.8±55.5) mL, and (4.5±0.7) months] ( P<0.05). The Harris hip scores at 3 months after operation and the last follow-up in the observation group [(90.3±3.4) points and (93.7±3.2) points] were significantly higher than those in the control group [(75.1±3.8) points and (78.7±3.6) points] ( P<0.05). The incidence of complications in the observation group was 6.0% (7/116), significantly lower than that in the control group [14.7% (16/109)] ( P<0.05). Conclusion:In the treatment of irreducible intertrochanteric femoral fractures, compared with the conventional anterolateral approach for intramedullary nailing, the extended intramedullary head nail approach guided by our new classification system can reduce operation time, intraoperative blood loss, fracture healing time, and incidence of postoperative complications, and improve postoperative hip joint function.

Objective To study the carrier rate and mutation spectrum of thalassemia genes in the population in Dehong Prefecture,Yunnan Province,thereby providing a scientific basis for developing precise thalassemia prevention and control strategies in this region.Methods A total of 6946 samples were screened and diagnosed for α-thalassemia and β-thalassemia using genetic screening and diagnostic techniques.The carrier status of thalassemia genes in the population was statistically analyzed.Results Among the 6946 samples,1880 tested positive for thalassemia genes,yielding a positive rate of 27.07%(1880/6946).This study detected 1174 α-thalassemia positive samples,with a positive rate of 16.90%(1174/6946).Among the mutation types,-α3.7/αα was identified as the predominant genotype.There were 493 β-thalassemia positive samples,with a positive rate of 7.10%(493/6946).Among the mutation types,CD26 was the most predominant mutation type.The differences in carrier rates between α-thalassemia and β-thalassemia was statistically significant(P<0.01).Additionally,213 samples were positive for both α-thalassemia and β-thalassemia(compound carriers),with a positive rate of 3.07%(213/6946).There were also 207 intermediate thalassemia positive samples,with a positive rate of 2.98%(207/6946).Among these,the-α3.7/--SEA genotype was the most predominant.Conclusion Dehong region is a high-prevalence area for thalassemia carriers,with a relatively high positive rate for thalassemia.The most common gene mutation type was-α3.7/αα and CD26.

Objective:To explore the efficacy of a new classification system proposed by us applied to the treatment of irreducible intertrochanteric femoral fractures.Methods:A retrospective study was conducted to analyze the clinical data of the 225 patients with irreducible intertrochanteric femoral fracture who had been treated between January 2023 and November 2024 at Zhengzhou Orthopedic Hospital (78 cases), The First Affiliated Hospital of Zhengzhou University (61 cases), Zhengzhou Central Hospital Affiliated to Zhengzhou University (28 cases), Zhengzhou Hospital of Traditional Chinese Medicine (34 cases), and Puyang Hospital of Traditional Chinese Medicine (24 cases). There were 86 males and 139 females, with an age of (74.8±7.9) years. Satisfactory reduction had failed in all patients even after 3 attempts at closed reduction. The patients were divided into 2 groups based on whether the new classification system proposed by our research team in our previous study was used to guide the treatment. The observation group of 116 cases were treated through an extended incision at the head of the intramedullary nail for reduction and fixation under the guidance of the new classification system while the control group of 109 cases were treated by reduction and fixation through a direct anterolateral incision. The operation time, intraoperative blood loss, fracture healing time, Harris hip scores at 3 months after operation and the last follow-up, and incidence of complications were compared between the 2 groups.Results:No statistically significant differences were observed in the baseline characteristics between the 2 groups, indicating comparability ( P>0.05). All patients were followed up for (12.6±2.5) months after operation. The operation time, intraoperative blood loss, and fracture healing time [(39.5±9.7) minutes, (106.6±54.8) mL, and (3.1±0.7) months] in the observation group were significantly less than those in the control group [(70.2±11.1) minutes, (322.8±55.5) mL, and (4.5±0.7) months] ( P<0.05). The Harris hip scores at 3 months after operation and the last follow-up in the observation group [(90.3±3.4) points and (93.7±3.2) points] were significantly higher than those in the control group [(75.1±3.8) points and (78.7±3.6) points] ( P<0.05). The incidence of complications in the observation group was 6.0% (7/116), significantly lower than that in the control group [14.7% (16/109)] ( P<0.05). Conclusion:In the treatment of irreducible intertrochanteric femoral fractures, compared with the conventional anterolateral approach for intramedullary nailing, the extended intramedullary head nail approach guided by our new classification system can reduce operation time, intraoperative blood loss, fracture healing time, and incidence of postoperative complications, and improve postoperative hip joint function.

Background The serious air pollution of highway toll booths poses a high occupational exposure risk to toll collectors. It is urgent to develop purification methods suitable for airborne particles and microbial pathogens in highway toll booths. Objective To verify the purification effect of low temperature plasma air purifiers on airborne particles and microbes in highway toll booths. Methods Based on controlled-intervention design, we selected three toll booths in an expressway toll station as on-site experimental locations for 6 d (no-intervention period: the low-temperature plasma purifier was turned off in the first three days; intervention period: the purifier was turned on from 9:00 to 17:00 in the following three days). The indoor and outdoor PM_2.5 and PM₁₀ concentrations were continuously monitored during the study. At 9:00, 12:00, and 17:00 of every day during the experiment, indoor and outdoor air samples were collected to analyze the concentration of airborne culturable colonies with a plankton sampler. Airborne particle samples were collected in the outermost exit continuously from 9:00 to 17:00 every day during the experiment using a medium flow particulate sampler, and the species and relative abundance of fungi and bacteria contained in the samples were analyzed by gene sequencing. Independent-sample t test was used to compare the concentration of indoor PM_2.5, PM₁₀, and culturable colonies between the intervention period and the non-intervention period. α diversity analysis, β diversity analysis, and t test were used to compare the diversity and relative abundance of specific species of bacteria and fungi, as well as typical pathogenic bacteria and fungi in the samples between the non-intervention period and the intervention period to reflect the purification effect of low temperature plasma air purifier on airborne PM_2.5, PM₁₀, and microorganisms. Results During the intervention period, the mean indoor concentrations of PM_2.5, PM₁₀, and culturable colonies were lower than those of the no-intervention period (P<0.01 or P<0.001). The ratios of indoor to outdoor concentration (I/O) of PM_2.5 and PM₁₀ during the intervention period were significantly lower than those of the no-intervention period (P<0.001), except the I/O of culturable colonies. Compared with the average concentration at 9:00, the average cleaning rates at 12:00 and 17:00 for PM_2.5 were 49.0% and 46.1%, for PM₁₀ were 49.7% and 45.4%, for airborne culturable colonies were 50.8% and 49.9%, respectively. The β diversity analysis showed that there were significant differences in composition at the level of species of bacteria, and at the levels of genus and species of fungi between the intervention and the no-intervention periods. The relative abundances of 10 species of bacteria such as Lactobacillus and 7 species of fungi such as Torula in the intervention period were significantly lower than those in the non-intervention period, but the relative abundances of fungi such as unclassified_f_cladosporiaceae, trichomerium, and cercospora were higher (P<0.05). For typical pathogenic bacteria, the relative abundances of Lactobacillus and Clostridium_sensu_stricto_1 during the intervention period were 73.5% and 86.9% lower than those in the no-intervention period, and the relative abundance of Talaromyces was 53.5% lower (P<0.05). Conclusion Low temperature plasma air purifier has a good purification effect on indoor PM_2.5, PM₁₀, and culturable colonies in highway toll booths, and likely a limited effect on some fungi.

Objective To investigate the regulatory role of nuclear factor erythroid 2-related factor 2(Nrf2)in the activation and polarization of microglia induced by methamphetamine(METH).Methods BV2 and HMC3 cells were studied in vitro and wild-type mice and Nrf2-knockout mice were studied in vivo.In vivo and in vitro toxicity models induced by METH were established,respectively.The activation and polarization of microglia in each group were examined using immunofluorescence and Western blot,respectively.Results METH treatment significantly increased the fluorescence level of inducible nitric oxide synthase(iNOS)in BV2 and HMC3 cells(P＜0.001),and significantly decreased the fluorescence level of Arginase1(Arg1)(P＜0.05,P＜0.01).METH exposure activated microglia in the cortex,increased expression levels of ionized calcium binding adaptor molecule-1(IBA1)and iNOS(P＜0.001,P＜0.05),and decreased the expression of Arg1(P＜0.01).The number of activated microglia was significantly increased after Nrf2 gene knockout(P＜0.01),compared with the WT METH group,while the expression levels of IBA1 and iNOS were also increased(P＜0.001,P＜0.01)and the expression level of Argl was decreased(P＜0.01).Conclusions Nrf2 plays an important role in regulating the activation and polarization of microglia induced by METH.Nrf2 may thus be a potential target for the treatment of neuroinflammation induced by METH.

Objective To investigate the regulatory role of nuclear factor erythroid 2-related factor 2(Nrf2)in the activation and polarization of microglia induced by methamphetamine(METH).Methods BV2 and HMC3 cells were studied in vitro and wild-type mice and Nrf2-knockout mice were studied in vivo.In vivo and in vitro toxicity models induced by METH were established,respectively.The activation and polarization of microglia in each group were examined using immunofluorescence and Western blot,respectively.Results METH treatment significantly increased the fluorescence level of inducible nitric oxide synthase(iNOS)in BV2 and HMC3 cells(P＜0.001),and significantly decreased the fluorescence level of Arginase1(Arg1)(P＜0.05,P＜0.01).METH exposure activated microglia in the cortex,increased expression levels of ionized calcium binding adaptor molecule-1(IBA1)and iNOS(P＜0.001,P＜0.05),and decreased the expression of Arg1(P＜0.01).The number of activated microglia was significantly increased after Nrf2 gene knockout(P＜0.01),compared with the WT METH group,while the expression levels of IBA1 and iNOS were also increased(P＜0.001,P＜0.01)and the expression level of Argl was decreased(P＜0.01).Conclusions Nrf2 plays an important role in regulating the activation and polarization of microglia induced by METH.Nrf2 may thus be a potential target for the treatment of neuroinflammation induced by METH.

Hip fracture is considered as the most severe osteoporotic fracture characterized by high disability and mortality in the elderly. Improved surgical techniques and multidisciplinary team play an active role in alleviating prognosis, which places higher demands on perioperative nursing. Dysfunction, complications, and secondary impact of anaesthesia and surgery add more difficulties to clinical nursing. Besides, there still lack clinical practices in perioperative nursing for elderly patients with hip fracture in China. In this context, led by the Orthopedic Nursing Committee of Chinese Nursing Association, the Expert consensus on clinical practice in perioperative nursing for elderly patients with hip fracture ( version 2023) is developed based on the evidence-based medicine. This consensus provides 11 recommendations on elderly patients with hip fracture from aspects of perioperative health education, condition monitoring and inspection, complication risk assessment and prevention, and rehabilitation, in order to provide guiding advices for clinical practice, improve the quality of nursing and ameliorate the prognosis of elderly patients with hip fracture.

Objective:To explore the risk factors for death within 1 year after hip fracture surgery in the elderly.Methods:A case control study was made on the clinical data of 551 elderly patients with hip fracture treated in Second Affiliated Hospital of Soochow University from January 2019 to December 2020, including 182 males and 369 females; aged 65-100 years [80(73,86)years]. Joint replacement, cannulated screw fixation or proximal femoral nail fixation were performed. The patients were divided into survival group ( n=494) and death group ( n=57) based on the death within 1 year after surgery recorded at postoperative telephone follow-up. The gender, age, hypertension, diabetes, cardiovascular diseases, chronic respiratory diseases, neurological diseases, chronic renal failure, anemia on admission, fracture types, American anesthesiologist Association (ASA) classification, operative methods, preoperative waiting time, duration of operation and perioperative blood transfusion were recorded in two groups. Univariate Cox regression was used to analyze the correlation between the above indexes and death within 1 year after surgery. All indexes with P<0.2 in the univariate analysis were included in multivariate Cox regression analysis to clarify the independent risk factors for death within 1 year after surgery. Results:Univariate Cox regression analysis showed that death within 1 year after surgery correlated with gender, age chronic respiratory diseases, chronic renal failure and anemia on admission (all P<0.01), but not with hypertension, diabetes, cardiovascular diseases, neurological diseases, fracture types, ASA classification, operative methods, preoperative waiting time, duration of operation or perioperative blood transfusion (all P>0.05). Multivariate Cox regression analysis showed that male ( HR=2.08, 95% CI 1.20, 3.61, P<0.01), age ≥ 80 years ( HR=2.22, 95% CI 1.15, 4.28, P<0.05), chronic respiratory diseases ( HR=2.54, 95% CI 1.19, 5.40, P<0.05), chronic renal failure ( HR=4.57, 95% CI 1.27, 16.44, P<0.05), anemia on admission ( HR=2.82, 95% CI 1.38, 5.76, P<0.01) were significantly associated with death within 1 year after surgery. Conclusion:Male age≥ 80 years, chronic respiratory disease, chronic renal failure and anemia on admission are independent risk factors for death within 1 year after hip fracture surgery in the elderly.

OBJECTIVE: To establish a new emergency dynamic score (EDS) method based on modified early warning score (MEWS) combined with clinical symptoms, rapidly available examination results and bedside examination data in the emergency department, and to observe its applicability and feasibility in the clinical application of emergency department. METHODS: A total of 500 patients admitted to the department of emergency of Xing'an County People's Hospital from July 2021 to April 2022 were selected as research objects. After admission, EDS and MEWS scores were performed first, and then acute physiology and chronic health evaluation II (APACHE II) was performed retrospectively, and the prognosis of patients was followed up. The difference of short-term mortality in patients with different score segments of EDS, MEWS and APACHE II were compared. Receiver operator characteristic curve (ROC curve) was drawn to evaluate the prognostic value of various scoring methods in critically ill patients. RESULTS: The mortality of patients in different score groups of each scoring method increased with the increase of the score value [The mortality of 0-1, 2-3, 4-5, 6-7 and ≥ 8 of MEWS were 1.9% (3/159), 2.9% (6/208), 12.4% (11/89), 29.0% (9/31) and 61.5% (8/13), respectively. The mortality of EDS stage 1 weighted MEWS score 0-3, 4-6, 7-9, 10-12 and ≥ 13 were 0 (0/49), 3.2% (8/247), 6.6% (10/152), 31.9% (15/47) and 80.0% (4/5), respectively. The mortality of EDS stage 2 clinical symptom score 0-4, 5-9, 10-14, 15-19, ≥ 20 were 0 (0/13), 0.4% (1/235), 3.6% (6/165), 26.2% (17/65), 59.1% (13/22), respectively. The mortality of EDS stage 3 rapid test data score 0-6, 7-12, 13-18, 19-24 and ≥ 25 were 0 (0/16), 0.6% (1/159), 4.6% (6/131), 13.7% (7/51) and 65.0% (13/20), respectively. The mortality of patients with APACHE II score 0-6, 7-12, 13-18, 19-24 and ≥ 25 were 1.9% (1/53), 0.4% (1/277), 4.6% (5/108), 34.2% (13/38) and 70.8% (17/24), respectively, all P < 0.01]. When the MEWS score was more than 4, the specificity was 87.0%, the sensitivity was 67.6%, and the maximum Youden index was 0.546, which was the best cut-off point. When the weighted MEWS score of EDS in the first stage was greater than 7, the specificity of predicting the prognosis of patients was 76.2%, the sensitivity was 70.3%, and the maximum Youden index was 0.465, which was the best cut-off point. When clinical symptom score of EDS in the second stage was more than 14, the specificity and sensitivity of predicting the prognosis of patients were 87.7% and 81.1%, respectively, and the maximum Youden index was 0.688, which was the best cut-off point. When the third stage rapid test of EDS reached 15 points, the specificity of predicting the prognosis of patients was 70.9%, and the sensitivity was 96.3%, and the maximum Youden index was 0.672, which was the best cut-off point. When APACHE II score was higher than 16, the specificity was 87.9%, the sensitivity was 86.5%, and the maximum Youden index was 0.743, which was the best cut-off point. ROC curve analysis showed that: EDS score in the stage 1, 2 and 3, MEWS score and APACHE II score can predict the short-term mortality risk of critically ill patients. The area under the ROC curve (AUC) and 95% confidence interval (95%CI) were 0.815 (0.726-0.905), 0.913 (0.867-0.959), 0.911 (0.860-0.962), 0.844 (0.755-0.933) and 0.910 (0.833-0.987), all P < 0.01. In terms of the differential ability to predict the risk of death in the short-term, the AUC in the second and third stages of EDS were highly close to APACHE II score (0.913, 0.911 vs. 0.910), and significantly higher than MEWS score (0.913, 0.911 vs. 0.844, both P < 0.05). CONCLUSIONS EDS method can dynamically evaluate emergency patients in stages, and has the characteristics of fast, simple, easy to obtain test and inspection data, which can facilitate emergency doctors to evaluate emergency patients objectively and quickly. It has strong ability to predict the prognosis of emergency patients, and is worth popularizing in emergency departments of primary hospitals.
Humans ; Research Design ; Critical Illness ; Retrospective Studies ; Hospitals ; Emergency Service, Hospital

Objective:To investigate the risk factors of thrombocytopenia in elderly patients with sepsis-associated acute kidney injury(SA-AKI), and to further evaluate whether the degree of thrombocytopenia is related to the increased risk of death on day 28.Methods:Elderly patients with SA-AKI admitted to ICU of our hospital from June 2017 to June 2020 were selected.The patients were divided into normal platelet group(56 cases)and thrombocytopenia group(72 cases)according to the platelet(PLT)count, and according to the degree of thrombocytopenia, they were further divided into three groups: PLT<20×10 9/L(group A, 22 cases), 20×10 9/L≤ PLT<50×10 9/L(group B, 27 cases), 50×10 9/L≤ PLT<100×10 9/L(group C, 23 cases).The general data, clinical baseline indicators and prognostic indicators of each group were compared to evaluate the risk factors of thrombocytopenia.At the same time, the impact of platelet count on the prognosis of elderly patients with SA-AKI was evaluated according to the length of stay in ICU, total length of stay and whether the patient died, and the correlation between the degree of thrombocytopenia and survival was analyzed. Results:A total of 128 elderly patients with SA-AKI were enrolled, including 73 males and 55 females.59.4 % of the patients were hospitalized in the department of internal medicine.The APACHEⅡ score was(15.5 ± 3.3)points, invasive mechanical ventilation accounted for 78.9%, positive inotropic therapy accounted for 12.8%, and 56 patients had normal platelet count.Thrombocytopenia occurred in 72 patients, including 22 patients with PLT<20×10 9/L, 27 patients with platelet count in 20-50×10 9/L, and 23 patients with platelet count in 50-100×10 9/L.There were significant differences in bloodstream infection, Gram-negative bacteria, APACHEⅡ score and procalcitonin(PCT)among the four groups( P<0.05).Further multivariate logistic regression showed that PCT was an independent risk factor for thrombocytopenia in elderly patients with SA-AKI( OR=1.05, 95% CI: 1.00-1.10, P=0.042).Compared with the normal platelet group, the 28-day mortality rate of the thrombocytopenia group was significantly higher than that of the normal platelet group, while the length of stay in ICU and the total length of stay were prolonged( P<0.05).Kaplan-Meier survival curve showed that the 28-day cumulative survival rate of thrombocytopenia group was lower than that of normal platelet group, and the risk of death increased with the degree of thrombocytopenia( χ2=31.479, P<0.001).Univariate Cox regression analysis showed that thrombocytopenia, bloodstream infection, APACHEⅡ score and PCT were risk factors for 28-day death in elderly patients with SA-AKI.Multivariate Cox analysis showed that bloodstream infection and APACHEⅡ score were independent risk factors for 28-day death.After adjusting these confounding factors, thrombocytopenia was an independent risk factor for death, and the degree of thrombocytopenia was related to the increased risk of death. Conclusions:Thrombocytopenia is common in elderly patients with SA-AKI, and elevated PCT levels increase the risk of thrombocytopenia.The degree of thrombocytopenia is an independent risk factor for 28-day mortality in such patients.