Objective To analyze the clinical and epidemiological characteristics of influenza A(H3N2) in Tangshan City, Hebei Province, from 2023 to 2025, and to provide a scientific basis for precise prevention and control of local influenza. Methods The influenza-like cases and influenza outbreak cases in the influenza surveillance sentinel hospitals in Tangshan City from January 2023 to December 2025 were included in this study. The clinical characteristics and epidemic characteristics of H3N2 influenza patients were analyzed by descriptive epidemiological methods and chi-square test. Results A total of 11 567 influenza case samples were tested in the study, with a positive rate of 9.34% (1 080/11 567). Influenza A (H3N2) remained the predominant circulating subtype throughout the study period. January 2023 to February 2023 marked the tailing end of the previous season’s H3N2. Then, a minor peak dominated by H1N1 occurred from March to June, and H3N2 circulated again from October to December, peaking in December. From September 2024 to December 2024, H1N1 and H3N2 circulated concurrently, with H3N2 as the dominant strain, peaking in January of the following year. From March 2025 to September 2025, influenza activity remained at low level, and activity began to rise in October, with H1N1 peaking in November before declining, and H3N2 becoming the dominant strain in December. H3N2 mainly occurred in the 5-14 years old group. Cases in the 0–4-year-old group were primarily characterized by gastrointestinal symptoms, with high fever being common. Cases in the 5–59-year-old group were primarily characterized by systemic and respiratory symptoms, with better clinical outcomes. Cases aged 60 and older exhibited the highest rates of hospitalization, severe illness, and incidence of complications. Conclusion From 2023 to 2025, the influenza virus in Tangshan City, Hebei Province is dominated by influenza A (H3N2). The epidemic is characterized by a peak incidence during autumn and winter, co-circulation with H1N1, and fluctuations during the peak period. It is necessary to pay attention to the clinical management and prevention and control of influenza A (H3N2) in infants and the elderly.

Objective:To train a deep convolutional neural networks (CNN) using a labeled data set to classify the metaphase chromosomes and test its accuracy for chromosomal identification.Methods:Three thousand and three hundred individuals undergoing surveillance for chromosomal disorders at the Laboratory for Comprehensive Prevention and Treatment of Birth Defects, Ningbo Maternal and Child Health Care Hospital from January 2013 to July 2019 were enrolled. A total of 3 300×46 chromosome images were included, of which 70% were used as the training set and 30% were used as the test set for the deep CNN. The accuracy of chromosome counting and "cutting + recognition + arrangement + automatic analysis" of the model were respectively evaluated. Another 80 images were collected to record the time and accuracy of chromosome classification by geneticists and the model, respectively, so as to assess the practical value of the model.Results:The CNN model was used to count the chromosomes with an accuracy of 61.81%, and the "cutting + recognition + arrangement + automatic analysis" accuracy of the model was 96.16%. Compared with manual operation, the classification time of the CNN model has been greatly reduced, and its karyotyping accuracy was only 3.58% lower than that of geneticists.Conclusion:The CNN model has a high performance for chromosome classification and can significantly reduce the work load involved with the segmentation and classification and improve the efficiency of chromosomal karyotyping, thereby has a broad application prospect.

OBJECTIVE：To d iscuss the monitoring platform of rational use management indexes of key monitored drugs ，and to provide reference for improving their clinical application management. METHODS ：The method of literature research and expert demonstration was adopted ，the indexes of key monitored drugs in medical institutions were put forward. RESULTS & CONCLUSIONS：Finally，Eight general indexes as the list of top 20 drugs purchased by medical institutions ，the specifications of key monitored drugs purchased ，the utilization rate of key monitored drugs of inpatient ，the proportion of key monitored drugs revenue，the increase in the cost of key monitored drugs of inpatient ，the increase in the cost of key monitored drug of single inpatient，the increase of the cost per time of key monitored drugs of inpatient ，the proportion of doctor ’s order review for key monitored drugs were defined. Four major data acquisition projects as the general information of medical institutions ，medical record homepage ，inpatient medication data ，and medical institution drug procurement data were also defined. The monitoring platform of key monitored drugs in medical institutions can provide reference for improving the management of clinical application of key monitored drugs.

A 17-month-old female infant received combination chemotherapy with cisplatin, etoposide, and bleomycin (IV infusion of cisplatin 8.5 mg on day 1 to 5, IV infusion of etoposide 42 mg on day 1 to 5, IV infusion of bleomycin 6 units on day 1) after yolk sac tumor resection. Two weeks after finishing the chemotherapy, the child developed hearing loss. Her hearing thresholds evaluation showed 32 decibel for the left ear and 45 decibel for the right ear. Two women in her mother′s family were known to be with acquired deafness by questioning the family history. The results of deafness gene screening showed that the child was a carrier of the mitochondrion 12SrRNA gene m.1555A>G site homogeneous mutation, so it was considered that the hearing loss of the child was related to her deafness susceptibility gene and ototoxicity of cisplatin.

A 17-month-old female infant received combination chemotherapy with cisplatin, etoposide, and bleomycin (IV infusion of cisplatin 8.5 mg on day 1 to 5, IV infusion of etoposide 42 mg on day 1 to 5, IV infusion of bleomycin 6 units on day 1) after yolk sac tumor resection. Two weeks after finishing the chemotherapy, the child developed hearing loss. Her hearing thresholds evaluation showed 32 decibel for the left ear and 45 decibel for the right ear. Two women in her mother′s family were known to be with acquired deafness by questioning the family history. The results of deafness gene screening showed that the child was a carrier of the mitochondrion 12SrRNA gene m.1555A>G site homogeneous mutation, so it was considered that the hearing loss of the child was related to her deafness susceptibility gene and ototoxicity of cisplatin.

A 51-year-old male patient received an operation treatment for paranasal sinusitis induced by radiotherapy and chemotherapy of nasopharyngeal carcinoma. One oxycodone and acetaminophen tablet (each tablet contains oxycodone hydrochloride 5 mg and acetaminophen 325 mg) was given orally thrice daily before and after the operation. Pregabalin 75 mg twice daily was added because of the poor analgesic effectiveness. During the treatment, oral oxycodone hydrochloride 10 mg was given once daily by his family members for 2 days. Two days after the addition of pregabalin, the patient developed mental disorders, such as delirium, irritability, involuntary convulsions of limbs, cognitive impairment, and disorientation. All above-mentioned analgesics were discontinued and dexmedetomidine was given for pain relief and sedation. Three days later, the mental state of the patient was improved, there was no obvious delirium, the discrimination and orientation returned to normal, and dexmetomidine was discontinued. There was an obvious time correlation between the occurrence and disappearance of mental disorders and the combination of analgesic drugs. Referring to the previous literature, it was considered that the mental disorders of the patient were caused by the interaction between oxycodone and pregabalin.

A 51-year-old male patient received an operation treatment for paranasal sinusitis induced by radiotherapy and chemotherapy of nasopharyngeal carcinoma. One oxycodone and acetaminophen tablet (each tablet contains oxycodone hydrochloride 5 mg and acetaminophen 325 mg) was given orally thrice daily before and after the operation. Pregabalin 75 mg twice daily was added because of the poor analgesic effectiveness. During the treatment, oral oxycodone hydrochloride 10 mg was given once daily by his family members for 2 days. Two days after the addition of pregabalin, the patient developed mental disorders, such as delirium, irritability, involuntary convulsions of limbs, cognitive impairment, and disorientation. All above-mentioned analgesics were discontinued and dexmedetomidine was given for pain relief and sedation. Three days later, the mental state of the patient was improved, there was no obvious delirium, the discrimination and orientation returned to normal, and dexmetomidine was discontinued. There was an obvious time correlation between the occurrence and disappearance of mental disorders and the combination of analgesic drugs. Referring to the previous literature, it was considered that the mental disorders of the patient were caused by the interaction between oxycodone and pregabalin.

Objective: To assess the value of non-invasive prenatal testing (NIPT) for the identification of fetal chromosomal aneuploidies. Methods: For 9470 pregnant women with a moderate-to-high risk by conventional serological screening or advanced maternal age, peripheral venous blood samples were collected and, following extraction of free fetal DNA, subjected to large-scale parallel sequencing on a Illumina Hiseq2000 platform. Those with a high risk by NIPT were validated by invasive prenatal diagnosis. Results: Out of the 9470 samples, 194 cases (2.0%) were positive by NIPT testing. These included 50 trisomy 21, 11 trisomy 18, 17 trisomy 13, 44 other autosomal aneuploidies, 55 sex chromosomal aneuploidies, and 17 chromosomal copy number variations. As validated by amniotic fluid or umbilical blood chromosomal karyotyping analysis, NIPT has a false positive rate of 2.0%, 18.2%, 41.2%, 97.7%, 81.8%, 94.1%, respectively. The test has a sensitivity of 100% and a specificity of 98.79%. Conclusion For common chromosomal aneuploidies such as trisomy 21 and trisomy 18, NIPT has a good sensitivity and specificity, therefore has good value for clinical application.

A 32﹣year﹣old woman received IV infusion of doxorubicin hydrochloride liposomes injection 20 mg,added into 5% glucose injection 250 ml,for malignant lymphoma. About 1 minute after the initiation of the IV infusion,the patient developed facial flushing and itchy throat. Two minutes later,the patient developed sudden convulsions, loss of consciousness, binocular gaze, trismus, and urinary incontinence. Anaphylactic shock was diagnosed and the drug was discontinued immediately. Treatments such as intravenous injections of adrenaline hydrochloride injection,dexamethasone sodium phosphate injection,and methylprednisolone sodium succinate for injection,oxygen inhalation,intravenous injections of nikethamide injection,lobeline hydrochloride injection,and norepinephrine bitartrate injection,and cardiopulmonary resuscitation were given successively. However,the patient had been in a deep coma without spontaneous breathing and her blood pressure and urination needed to be maintained by drugs. On day 112 of hospitalization,cerebrovascular color ultrasound showed spectrum changes of brain death. On day 253,the patient was discharged at the request of his family members.

A 32﹣year﹣old woman received IV infusion of doxorubicin hydrochloride liposomes injection 20 mg,added into 5% glucose injection 250 ml,for malignant lymphoma. About 1 minute after the initiation of the IV infusion,the patient developed facial flushing and itchy throat. Two minutes later,the patient developed sudden convulsions, loss of consciousness, binocular gaze, trismus, and urinary incontinence. Anaphylactic shock was diagnosed and the drug was discontinued immediately. Treatments such as intravenous injections of adrenaline hydrochloride injection,dexamethasone sodium phosphate injection,and methylprednisolone sodium succinate for injection,oxygen inhalation,intravenous injections of nikethamide injection,lobeline hydrochloride injection,and norepinephrine bitartrate injection,and cardiopulmonary resuscitation were given successively. However,the patient had been in a deep coma without spontaneous breathing and her blood pressure and urination needed to be maintained by drugs. On day 112 of hospitalization,cerebrovascular color ultrasound showed spectrum changes of brain death. On day 253,the patient was discharged at the request of his family members.