Objective To investigate the values of nucleoprotein transformation in sperm for predicting recurrent abortion.Methods A total of 521 infertile couples with complete test indicators on fertility were selected from the reproductive medical clinic of our hospital from 2019 to 2022,among which the ages of the male were from 23 to 56 years old.The following factors causing recurrent abortion were excluded,including the age of woman,body mass index,metabolic disease,antiphospholipid syndrome,uterine and accessory abnormalities,history of caesarean section and intrauterine myoma/cervical conectomy,peripheral blood chromosome abnormalities of both the couple,and adverse life history,such as smoking/alcohol abuse.According to the abortion situation,they were divided into the recurrent abortion group(≥two spontaneous abortions),one spontaneous abortion group and no abortion group.Tukey's multiple comparison was performed to compare the differences of nucleoprotein transformation of sperm in each group by using GraphPad6.0 sta-tistical software.The Pearson method was used to analyze the correlation between nucleoprotein transformation and recurrent abortion.The predictive values of nucleoprotein transformation in recurrent abortion were analyzed by the parameters of sensitivity,specificity,positive predictive value,negative predictive value,Youden index and odd ratio.Results The percentages of abnormal nucleoprotein transformation in recurrent abortion group[(33.31±13.83)％]were significantly higher than those in non-abortion group[(26.85± 15.38)％]and the one abortion group[(28.20±12.50)％,P＜0.05].Pearson correlation analysis showed that there was a significant positive correlation between abnormal nucleoprotein transformation and recurrent abortion.The sensitivity and specificity of nucleoprote-in transformation for predicting recurrent abortion were 45.24％and 73.64％,respectively.All of the data of positive predictive value(15.70％),negative predictive value(92.53％),Youden index(18.88％)and odd ratio(2.31)of nucleoprotein transformation in predicting recurrent abortion were higher than those of high DNA stainability(10.64％,90.31％,1.05％and 1.11).Conclusion In the spouses of patients with recurrent abortion,the immaturity of sperm nuclear protein is significantly increased and significantly posi-tively correlated with recurrent abortion.The abnormal nucleoprotein transformation of sperm may be the important factor of recurrent a-bortion in males,and it has high predictive value for recurrent spontaneous abortion in clinical practice.

Feature extraction methods and classifier selection are two critical steps in heart sound classification. To capture the pathological features of heart sound signals, this paper introduces a feature extraction method that combines mel-frequency cepstral coefficients (MFCC) and power spectral density (PSD). Unlike conventional classifiers, the adaptive neuro-fuzzy inference system (ANFIS) was chosen as the classifier for this study. In terms of experimental design, we compared different PSDs across various time intervals and frequency ranges, selecting the characteristics with the most effective classification outcomes. We compared four statistical properties, including mean PSD, standard deviation PSD, variance PSD, and median PSD. Through experimental comparisons, we found that combining the features of median PSD and MFCC with heart sound systolic period of 100-300 Hz yielded the best results. The accuracy, precision, sensitivity, specificity, and F1 score were determined to be 96.50%, 99.27%, 93.35%, 99.60%, and 96.35%, respectively. These results demonstrate the algorithm's significant potential for aiding in the diagnosis of congenital heart disease.
Humans ; Heart Sounds ; Neural Networks, Computer ; Algorithms ; Heart Defects, Congenital

Objective:The study aimed to analyze the clinical and endoscopic characteristics of adult celiac disease (CD) to provide a scientific basis for more effective CD diagnosis and treatment.Methods:In this cross-sectional study, the clinical and endoscopic data of 96 adult CD patients treated in the Department of Gastroenterology of the People′s Hospital of Xinjiang Uygur Autonomous Region from March 2016 to December 2021 were retrospectively collected and analyzed.Results:A total of 96 CD patients were diagnosed, including 33 men and 63 women. The average age was 47±14 years (range, 18-81 years). The disease occurred mainly in the age group of 31-60 years. The median course of the disease was 2.0 (0.2-40.0) years. There were 41 (42.7%) classical and 55 (57.3%) non-classical CD patients. All patients with classical CD showed chronic diarrhea, often accompanied by abdominal pain (46.3%, 19/41), abdominal distension (17.1%, 7/41), anemia (65.9%, 27/41), and chronic fatigue (48.8%, 20/41). The main manifestations of non-classical CD were chronic abdominal pain (58.2%, 32/55), abdominal distension (32.7%, 18/55), anemia (40.0%, 22/55), and osteopenia/osteoporosis (38.2%, 21/55). Compared with non-classical CD, anemia developed more frequently in classical CD, and the difference was statistically significant ( P = 0.012). The incidence of complications in CD patients was 36.5% (35/96), and the main complications were thyroid disease (19.8%, 19/96), connective tissue disease (6.2%, 6/96), and kidney disease (6.2%, 6/96). There was no significant difference between classical and non-classical CD ( P>0.05). The frequency of endoscopic manifestations in CD patients was 84.4% (81/96). Duodenal bulb endoscopy showed nodular changes (72.9%, 70/96), grooved changes (10.4%, 10/96), and focal villous atrophy (9.4%, 9/96). The main manifestations of descending endoscopy were the decrease, flattening, or disappearance of duodenal folds (43.8%, 42/96), scallop-like changes (38.5%, 37/96), and nodular changes (34.4%, 33/96). Conclusions:Adult CD patients are mostly female. CD occurred mainly in the age group of 31-60 years. The clinical manifestations were mainly those of non-classical CD. Some patients often had other autoimmune diseases. Patients with characteristic endoscopic manifestations should be warned about the possibility of developing CD. Clinicians should strengthen the understanding of CD and reduce the related rates of missed diagnosis.

Objective:To explore the safety and efficacy of serial expansion without delay for the treatment of giant congenital melanocytic nevi (GCMN) on the back.Methods:The clinical date of children with GCMN on the back admitted to the Ninth Department of Plastic Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences from February 2017 to March 2019 were retrospectively analyzed. In stage Ⅰ, an expander was placed on each side of the back to laterally expand the skin on the back, as a whole. In stage Ⅱ, after the expanders were removed and part of the nevus was removed, the expanded flaps were advanced integrally across the back with additional incisions on both sides of the trunk. The new expanders were then placed under the expanded flaps simultaneously for serial expansion. In stage Ⅲ, the expanded flaps were used to reconstruct the wound after resection of GCMN. The color, texture of the flaps and the postoperative scar on the back were observed.Results:Ten patients were enrolled, including 4 males and 6 females, with an average age of 3.4 years (ranged between 2-6 years). All patients completed three stages of treatment. In the second stage, new expanders were placed under the expanded flap for serial expansion simultaneously. The three-stage operation took a total of 6.80 to 11.77 months, and all the nevus on the back were removed. The mean follow-up time was 16.6 months (ranged between 12-24 months). In one case, the skin flap necrosis (1.5 cm × 1.2 cm) was caused by abrasion at the end of stage Ⅱ when the inflation of the expander was nearly completed, without exposure of the dilator. After the expanders were removed in stage Ⅲ, the flap survived well. In the other children, no wound dehiscence, infection, dilator exposure and other complications occurred. The back was maintained as a whole aesthetic unit without conspicuous scars and the postoperative scars were located on the sides of the trunk. The color and texture of the flap were similar to its surrounding tissue.Conclusions:Serial expansion without delay is safe and efficient in the treatment of GCMN on the back. It not only eliminates the need to wait 4 to 15 months for the expander implantation, but also saves one operation and anesthesia. During the treatment, additional incisions are only made on both sides of the trunk, which could maintain the back as a whole aesthetic unit and obtain a better postoperative appearance.

Objective:To explore the safety and efficacy of serial expansion without delay for the treatment of giant congenital melanocytic nevi (GCMN) on the back.Methods:The clinical date of children with GCMN on the back admitted to the Ninth Department of Plastic Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences from February 2017 to March 2019 were retrospectively analyzed. In stage Ⅰ, an expander was placed on each side of the back to laterally expand the skin on the back, as a whole. In stage Ⅱ, after the expanders were removed and part of the nevus was removed, the expanded flaps were advanced integrally across the back with additional incisions on both sides of the trunk. The new expanders were then placed under the expanded flaps simultaneously for serial expansion. In stage Ⅲ, the expanded flaps were used to reconstruct the wound after resection of GCMN. The color, texture of the flaps and the postoperative scar on the back were observed.Results:Ten patients were enrolled, including 4 males and 6 females, with an average age of 3.4 years (ranged between 2-6 years). All patients completed three stages of treatment. In the second stage, new expanders were placed under the expanded flap for serial expansion simultaneously. The three-stage operation took a total of 6.80 to 11.77 months, and all the nevus on the back were removed. The mean follow-up time was 16.6 months (ranged between 12-24 months). In one case, the skin flap necrosis (1.5 cm × 1.2 cm) was caused by abrasion at the end of stage Ⅱ when the inflation of the expander was nearly completed, without exposure of the dilator. After the expanders were removed in stage Ⅲ, the flap survived well. In the other children, no wound dehiscence, infection, dilator exposure and other complications occurred. The back was maintained as a whole aesthetic unit without conspicuous scars and the postoperative scars were located on the sides of the trunk. The color and texture of the flap were similar to its surrounding tissue.Conclusions:Serial expansion without delay is safe and efficient in the treatment of GCMN on the back. It not only eliminates the need to wait 4 to 15 months for the expander implantation, but also saves one operation and anesthesia. During the treatment, additional incisions are only made on both sides of the trunk, which could maintain the back as a whole aesthetic unit and obtain a better postoperative appearance.

Objective:To establish a rapid detection method for human astrovirus based on TaqMan-probe real-time fluorescent quantitative reverse transcription-polymerase chain reaction (RT-PCR).Methods:According to the conservative sequence of human astrovirus ORF1 b gene, we designed the amplification primers and specific fluorescent probe to establish the human astrovirus TaqMan real-time fluorescent quantitative RT-PCR rapid detection method. The specificity, sensitivity and stability of the method were evaluated. We also used this method to detect human astrovirus in clinical samples. Results:The established human astrovirus TaqMan real-time fluorescent quantitative RT-PCR detection method has good specificity and repeatability for human astrovirus, and the sensitivity can reach 10 2 copies/μl. After testing the clinical samples, the detection rate of human astrovirus by our method was 100%. Conclusions:The human astrovirus TaqMan real-time fluorescent quantitative RT-PCR detection method established in this study is simple, rapid, sensitive, specific and stable. It can be used for clinical human astrovirus detection and epidemiological investigation.

Objective:To understand the etiology and clinical characteristics of hospitalized severe community-acquired pneumonia(SCAP) in Changchun, and provide scientific basis for its etiology diagnosis and targeted treatment.Methods:The study subjects included 618 children with clinical diagnosis of SCAP who were hospitalized from January 2016 to December 2019.We collected pharyngeal swabs and alveolar lavage fluid from children.Virus isolation, bacterial culture, time-of-flight mass spectrometry, PCR/RT-PCR, colloidal gold method and Optochin test were used to detect the antigen, nucleic acid and protein profiles in the specimen.Results:There were more boys than girls in hospitalized children with SCAP.The peak age of onset was 7 to 12 months.Most cases occurred in winter and spring.The highest detection rate of SCAP virus was 56.15%(347/618); 73.49%(255/347) were positive for one virus, among which the top five were respiratory syncytial virus (27.8%), influenza A virus (23.9%), influenza B virus (16.1%), rhinovirus (12.2%) and metapneumovirus (10.2%). Two viruses were positive for 19.88%(69/347); three viruses were positive for 4.32%(15/347); four viruses were positive for 2.31%(8/347). Atypical microbial infections were 29.77%(184/618), of which Mycoplasma pneumoniae accounted for 95.65%(176/184). Bacterial infections were 17.31%(107/618), mainly Streptococcus pneumoniae(39.25%, 42/107) and Staphylococcus aureus(24.30%, 26/107). The mixed infection of multiple pathogens was 7.61%(47/618), among which the mixed infection rates of Mycoplasma pneumonia with Streptococcus pneumoniae, virus were 40.43% and 34.04%, respectively.High fever, faster breathing, and perioral cyanosis were risk factors for SCAP, with OR and 95% CI of 7.71 and 4.56-13.04, 2.43 and 2.02-2.93, 3.53 and 2.56-4.86, respectively.Viral co-infection occurred in 36.96%(34/92) of complications such as heart failure, toxic encephalopathy, and myocardial damage; Mycoplasma pneumoniae and other pathogens co-infected 35.29% of children with pleural effusion. Conclusion:The pathogens of SCAP in Changchun are mainly viruses notably, respiratory syncytial virus is the dominant pathogen, followed by Mycoplasma pneumoniae.The bacterial pathogen is mainly Streptococcus pneumoniae.High fever, faster breathing, and cyanosis around the mouth are risk factors for severe pneumonia.Multi-pathogen mixed infection is prone to serious complications.

Objective:To analyze the effects of SBAR(namely situation, background, assessment and recommendation) communication mode-guided scenario simulation exercise on the quality of shift change of practice nurses and the incidence of nursing risks.Methods:From May 2017 to December 2018, 46 nurses interning in the Department of Cardiovascular Medicine of Guangyuan Central Hospital were selected as the control group, and received practice guidance according to the conventional shift change mode; 46 nurses were selected as the research group having the SBAR communication mode-guided scenario simulation exercise from January 2019 to June 2020 in the same department. The evaluation results of the quality of nurses' shift change, the evaluation results of the quality of nurses' succession, and the satisfaction of nurses were compared between the two groups. SPSS 22.0 was used for t test and chi-square test. Results:The evaluation results of 7 items of nurses' handover quality in the research group were better than those in the control group ( P<0.001). The evaluation results of 6 items of nurses' succession quality in the research group were better than those in the control group ( P<0.001). The scores of 5 dimensions in the research group were higher than those in the control group ( P<0.001). Conclusion:The implementation of SBAR communication mode-guided scenario simulation exercise can improve the quality of nurses' shift change and the satisfaction of practice nurses.

【Objective】 To explore the establishment of individualized prediction model of recurrence after percutaneous endoscopic lumbar discectomy （PELD） in patients with lumbar disc herniation （LDH）. 【Methods】 We selected 124 LDH patients treated with PELD in Department of Orthopedics， The First Affiliated Hospital of Xi’an Jiaotong University， from January 2017 to January 2020 as the research subjects. Their clinical data were retrospectively analyzed， and the independent risk factors affecting PELD recurrence in the LDH patients were screened by univariate analysis and Logistic regression analysis， respectively； the correlation histogram prediction model was established. 【Results】 Age， history of diabetes， course of disease， work intensity and IDDG were the risk factors for the recurrence of PELD in LDH patients （P<0.05）. Based on the risk factors screened out， the prediction model of the histogram was established， and the model was verified. The results showed that the C-index of the modeling set and the validation set was 0.944 （95% CI： 0.902-0.963） and 0.969 （95% CI： 0.911-0.978）， respectively. The correction curves of both groups were well fitted with the standard curves. The areas under the ROC curve （AUC） in the two groups were 0.944 and 0.969， respectively， which proved that the model had good prediction accuracy. 【Conclusion】 LDH patients have many independent risk factors for recurrence after PELD， and the model based on risk factors with good predictive ability can be useful in preoperative evaluation， appropriate patient selection， and decrease of recurrence rate after PELD.

Objective:To investigate the mechanism of action of peroxisome proliferator-activated receptor α (PPARα)-mediated CCAAT/enhancer binding protein homologous protein (CHOP) signaling molecule with response to inflammation in mice with acute liver failure.Methods:C57BL/6 mice were used as the research subjects, and D-galactose (D-GalN) combined with lipopolysaccharide (LPS) was injected intraperitoneally to establish a mouse model of acute liver failure. PPARα was activated by Wy-14643. CHOP expression was promoted by plasmids. Liver pathological changes and serum transaminases (ALT and AST) were detected in mice to evaluate liver function. The mRNA expression level of inflammatory factors in liver tissue was detected by real-time fluorescence quantitative PCR. LPS-stimulated macrophage was used to establish an inflammation model. PPARα and CHOP expression was inhibited by siRNA. The mRNA expression level of inflammatory factors in the cells was detected by real-time fluorescence quantitative PCR.Results:Promoted PPARα activation had inhibited liver hemorrhage and inflammation in mice with acute liver failure induced by D-GalN/LPS. In addition, the serum level of transaminases and genetic level of inflammatory factors in liver tissues were reduced ( P < 0.01). CHOP accelerated expression had reversed the hepatoprotective effect of PPARα activation, aggravated liver injury, and increased inflammatory factors expression ( P < 0.01). At the cellular level, the inhibition of PPARα activation had accelerated the increase of inflammatory factors ( P < 0.01), while the inhibition of CHOP activation had all over again decreased the inflammatory factors ( P < 0.01). Conclusion:PPARα and CHOP are important signaling molecules to regulate the inflammatory response in acute liver failure and liver injury. PPARα acceleration can down-regulate CHOP to inhibit inflammatory factors, which might play a protective role in mice with acute liver failure.