Objective To accurately depict the actual tongue position of vowels in pinyin based on ultrasound tongue image(UTI),and accordingly propose targeted pronunciation training strategies to improve speech rehabili-tation and teaching quality.Methods Forty-five pieces of pronunciation material containing the six vowels a,o,e,i,u,ü(covering all the rhymes in Mandarin)were selected,and 16 subjects aged 20～25 years old with a proficien-cy level of Mandarin 2A or above were recruited to collect speech and ultrasonic data simultaneously.When process-ing the data,segmental labelling was first performed with Praat,then AAA was used to extract the coordinates of the tongue shape and palatal line of the target segments.Finally,the actual tongue positions of the six pinyin letters were determined based on articulatory tongue position comparison.Results Vowel a has[A]and[ε]2 types of tongue positions;o has[o]1 type of tongue position;e has[?],[e]and[?]3 types of tongue positions;i has[i],[(ι)]and[(ι)]3 types of tongue positions;u has[u]1 type of tongue position;and ü has[y]1 type of tongue posi-tion.A retroflex vowel is a vowel target tongue position followed by a tongue curl stroke.Conclusion ① The rhymes are classified into 11 categories,which allowing for a more accurate and systematic teaching.② The six vowel ultrasonic data provides a visual means for learning vowels,which is more intuitive than the traditional pinyin teaching.

Objective To investigate the prevalence and genotypes of Cryptosporidium spp. and Giardia lamblia in dogs and cats from a pet hospital in Shanghai Municipality. Methods A total of 145 fresh fecal samples were collected from pet dogs and cats in a pet hospital in Shanghai Municipality during the period from November 2021 to June 2022, including 99 dog fecal samples and 46 cat fecal samples. The small subunit ribosomal ribonucleic acid (SSU rRNA) gene of Cryptosporidium and the triose phosphate isomerase (TPI) gene of G. lamblia were amplified using nested PCR assay, and the positive amplification products were sequenced from both directions. The sequence assembly was performed using the software Clustal X 2.1, and sequence alignment was conducted using BLAST. A phylogenetic tree was created with the Neighbor-Joining method using MEGA 11.0 to identify parasite species or genotype. Results The overall prevalence of Cryptosporidium and G. lamblia was 20.00% (29/145) in 145 pet dog and cat fecal samples, with the prevalence of 0.69% (1/145) and 19.31% (28/145) in Cryptosporidium and G. lamblia, respectively. G. lamblia was only detected in dog fecal samples, with prevalence of 18.18% (18/99), while the detection rates of Cryptosporidium and G. lamblia were 2.17% (1/46) and 21.74% (10/46) in cat fecal samples. Nucleotide sequence analysis showed that one Cryptosporidium positive sample was characterized as C. felis, and 28 G. lamblia positive samples were all characterized as Giardia assemblage A, which showed 100% sequence homology with human isolates of Giardia. Phylogenetic analysis revealed that the sequences obtained in this study belonged to the same branch with the reported Giardia assemblage A. Conclusions Cryptosporidium and G. lamblia infection was prevalent in pet dogs and cats from the study pet hospital in Shanghai Municipality, and there is a zoonotic risk for the species and genotype. Intensified surveillance of Cryptosporidium and Giardia infection is recommended in pets and their owners, and improved management of pet keeping is required.

Objective:For tympanosclerosis patients with ossicular chain fixation, we use ossicular chain bypass technique and evaluate its long-term effects. Methods:From June 2017 to June 2019, 147 patients with tympanosclerosis who underwent middle ear surgery with otoscopy in Yinchuan First People's Hospital were reviewed. The subjects were divided into three groups according to the implemented operation plan, 51 cases in the ossicular chain mobilization group（OCM）, 56 cases in the ossicular chain bypass reconstruction group（OCB）, and 40 cases in the malleus-incus complex resection reconstruction group（MICR）. Through a three-year follow-up, the medium and long-term effects of different operation plans were compared and analyzed. Results:There was no significant difference among the three groups in the incidence of tympanic membrane perforation, delayed facial nerve palsy, and the dispatch and displacement of PORP. The incidence of tympanic membrane retraction pocket or cholesteatoma after operation in OCB group（0） was significantly lower than that in OCM group（11.76%） and MICR group（7.5%）（P<0.05）. At 12 months after operation, ΔABG of OCB group and MICR group were better than that in the OCM group（P<0.05）. At 36 months after operation, ΔABG of OCB group was better than that in the OCM group（P<0.05）, and there was no significant difference between OCB group and MICR group. The audiological performance of patients with epitympanic sclerosis（ETS） at 12, 24 and 36 months after operation was better than that of patients with posterior tympanosclerosis（PTS） and total tympanosclerosis（TTS）（P<0.05）. Conclusion:Compared with patients undergoing ossicular chain mobilization and malleus-incus complex resection for ossicular chain reconstruction, patients with tympanosclerosis undergoing bypass technique have better and stable hearing prognosis in medium and long term. This technique can effectively prevent the formation of retracted pocket and cholesteatoma in patients with tympanosclerosis after operation.
Humans ; Tympanosclerosis ; Ear Ossicles/surgery* ; Ear, Middle ; Malleus/surgery* ; Cholesteatoma ; Retrospective Studies ; Ossicular Prosthesis ; Treatment Outcome

Objective    To analyze the risk factors for acute kidney injury (AKI) after off-pump coronary artery bypass grafting (OPCABG). Methods     The PubMed, EMbase, The Cochrane Library, Web of Science, Wanfang data, CBM, VIP, CNKI were searched by computer for researches on risk factors associated with the development of AKI after OPCABG from the inception to March 2022. The meta-analysis was performed using RevMan 5.4 software. The Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of included studies. Results    A total of 18 researches were included, involving 9 risk factors. The NOS score of all included studies was≥6 points. Meta-analysis results showed that age [OR=1.03, 95%CI (1.01, 1.06), P=0.020], body mass index (BMI) [OR=1.10, 95%CI (1.05, 1.15), P<0.001], history of hypertension [OR=1.45, 95%CI (1.27, 1.66), P<0.001], history of diabetes [OR=1.50, 95%CI (1.33, 1.70), P<0.001], preoperative serum creatinine level [OR=2.05, 95%CI (1.27, 3.32), P=0.003], low left ventricular ejection fraction [OR=4.51, 95%CI (1.39, 14.65), P=0.010], preoperative coronary angiography within a short period of time [OR=2.10, 95%CI (1.52, 2.91), P<0.001], perioperative implantation of intra-aortic balloon pump [OR=3.42, 95%CI (2.26, 5.16),  P<0.001], perioperative blood transfusion [OR=2.00, 95%CI (1.51, 2.65), P<0.001] were risk factors for AKI after OPCABG. Conclusion    Age, BMI, history of hypertension, history of diabetes, preoperative serum creatinine level, low left ventricular ejection fraction, preoperative coronary angiography within a short period of time, perioperative implantation of intra-aortic balloon pump, perioperative blood transfusion are risk factors for AKI after OPCABG. Medical staff should focus on monitoring the above risk factors and early identifying, in order to prevent or delay the onset of postoperative AKI and promote early recovery of patients.

Recently, the situation of the preventing and controlling of the novel coronavirus infection has changed. After patients with mental disorders are infected with the new coronavirus (hereinafter referred to as the new coronavirus), they will face the following problems: whether the drugs related to the new coronavirus infection can be used at the same time as the psychiatric drugs, and whether there will be pharmacokinetic or pharmacodynamic interactions between the medicines How to avoid the safety risks brought by drug interactions? Focusing on the above issues, this article puts forward some suggestions based on the summary of existing evidence, hoping to help front-line doctors.

Objective:To analyze the correlation between serum vitamin D level and ovarian artery blood flow index and ovarian reserve function in women.Methods:A retrospective cohort study was conducted. Women aged from 18 to 40 years who were admitted to the Department of Obstetrics and Gynecology of the Second Affiliated Hospital of Harbin Medical University from September 2020 to November 2021 and had regular sexual life were selected as subjects. The data of age, height and weight were collected. And the indexes of vitamin D, anti-Müllerian hormone (AMH), luteinizing hormone and follicle-stimulating hormone were detected in the laboratory. Color Doppler ultrasound was used to measure antral follicle count and bilateral ovarian interstitial artery blood stream resistance index (RI) and plusatility index (PI) in early follicular phase. Multiple linear regression was used to analyze the related factors of serum vitamin D level.Results:A total of 218 women were included in the study, including 137 cases of vitamin D deficiency, accounting for 62.8%, 39 cases of vitamin D insufficiency, accounting for 17.9%, 42 cases of normal vitamin D, accounting for 19.3%. Multiple linear regression analysis showed that there was a negative correlation between serum vitamin D level and ovarian blood flow ( P=0.024), but no correlation with other indexes (all P>0.05). Conclusion:Serum vitamin D level affected ovarian interstitial artery blood flow RI to some extent, but had no significant correlation with ovarian interstitial artery blood flow PI, serum AMH level and other indexes related to ovarian reserve function.

Objective:To analyze the correlation between serum vitamin D level and ovarian artery blood flow index and ovarian reserve function in women.Methods:A retrospective cohort study was conducted. Women aged from 18 to 40 years who were admitted to the Department of Obstetrics and Gynecology of the Second Affiliated Hospital of Harbin Medical University from September 2020 to November 2021 and had regular sexual life were selected as subjects. The data of age, height and weight were collected. And the indexes of vitamin D, anti-Müllerian hormone (AMH), luteinizing hormone and follicle-stimulating hormone were detected in the laboratory. Color Doppler ultrasound was used to measure antral follicle count and bilateral ovarian interstitial artery blood stream resistance index (RI) and plusatility index (PI) in early follicular phase. Multiple linear regression was used to analyze the related factors of serum vitamin D level.Results:A total of 218 women were included in the study, including 137 cases of vitamin D deficiency, accounting for 62.8%, 39 cases of vitamin D insufficiency, accounting for 17.9%, 42 cases of normal vitamin D, accounting for 19.3%. Multiple linear regression analysis showed that there was a negative correlation between serum vitamin D level and ovarian blood flow ( P=0.024), but no correlation with other indexes (all P>0.05). Conclusion:Serum vitamin D level affected ovarian interstitial artery blood flow RI to some extent, but had no significant correlation with ovarian interstitial artery blood flow PI, serum AMH level and other indexes related to ovarian reserve function.

Recently, the situation of the preventing and controlling of the novel coronavirus infection has changed. After patients with mental disorders are infected with the new coronavirus (hereinafter referred to as the new coronavirus), they will face the following problems: whether the drugs related to the new coronavirus infection can be used at the same time as the psychiatric drugs, and whether there will be pharmacokinetic or pharmacodynamic interactions between the medicines How to avoid the safety risks brought by drug interactions? Focusing on the above issues, this article puts forward some suggestions based on the summary of existing evidence, hoping to help front-line doctors.

BACKGROUND: Little was known about the association among time in range (TIR), time above range (TAR), time below range (TBR), and cancer mortality among patients with type 2 diabetes. We aimed to investigate the association among TIR, TAR, TBR, and the risk of cancer mortality among patients with type 2 diabetes. METHODS: A total of 6225 patients with type 2 diabetes were prospectively recruited in Shanghai, China. TIR was measured with continuous glucose monitoring at baseline and was defined as the average percentage of time in the target glucose range during a 24 h period. Cox proportion hazard regression analysis was used to determine the association between TIR and the risk of cancer mortality. RESULTS: During a mean follow-up of 7.10 years, we confirmed 237 death events related to cancer. The multivariable-adjusted hazard ratio (HR) for cancer mortality was 1.32 (95% confidence interval [CI]: 1.01-1.75) in patients with TIR ≤70% compared with those with TIR >70%. When TIR was considered as a continuous variable, the multivariable-adjusted HR for cancer mortality associated with each 10% decrease in TIR was 1.07 (95% CI: 1.02-1.14). In the site-specific analysis, a significant association between TIR as a continuous variable and the risk of hepatocellular cancer was found (HR: 1.24; 95% CI: 1.09-1.41). However, no relationship between hemoglobin A1c and cancer mortality was observed (HR: 1.04; 95% CI: 0.97-1.10). CONCLUSIONS The present study found an inverse association of TIR with the risk of cancer mortality among patients with type 2 diabetes. New evidence of TIR was added into the clinical practice that TIR may be an optimal target of glycemic control among patients with type 2 diabetes.
Blood Glucose ; Blood Glucose Self-Monitoring ; China ; Diabetes Mellitus, Type 2/complications* ; Humans ; Neoplasms ; Prospective Studies

Objective: To investigate the duration of Norovirus (NoV) shedding among infected school children during a NoV outbreak in a kindergarten,and to provide scientitic basis for epidemic prevention and control. Methods: Specimens and epidemiological data were collected from suspected cases, and specimens were detected using real-time RT-PCR to determine whether or not infecting with NoV. Specimens were collected every 3-7 days from NoV-infected children until specimens became negative for NoV. Results: A total of 14 suspected cases were reported, and 12 of them were infected with NoV. The average duration of NoV shedding was (26.58±17.94)d. The specimens among 9 from 12 Nov-infected cases were positive at 7 days, 8 NoV-intected cased remained positive at 14 days and 7 Non-infected cased at least 21 days. Conclusion Since NoV shedding duration among NoV-infected children tends to longer than their isolation time during outbreaks, reinforcement of hygiene practices among these school children is especially necessary to reduce the risk of virus secondary transmissions after their return to school.