Objective To evaluate the clinic value of five different ultrasonographic fetal parameters for prenatal diagnosis of pulmonary hypoplasia.Methods Two hundred and seventy-one normal singleton pregnancies with well-established dates between 20 and 40 weeks of gestation were studied to establish normal reference range of five different ultrasonographic fetal parameters.The five parameters,which could reflect fetal lung mass,were as follows:lung area/body weight ratio,lung area,thoracic circumference/abdominal circumference ratio,lung area/thoracic area ratio and lung area/head circumference.Thirty pregnancies with risk factors for pulmonary hyperplasia were studied for the usefulness of five parameters.Two or more standard deviations below the mean control group measurement were considered abnormal.The prenatal ultrasonic diagnoses of pulmonary hyperplasia were confirmed at neonatal follow-up examinations,on autopsy and by pathologic findings.Results Lung area and lung area/head circumference increased with gestational age,lung area/body weight ratio decreased with gestational age.The relationships among the two ratios(thoracic circumference/abdominal circumference ratio,lung area/thoracic area ratio)and gestational age were relatively constant. Abnormal lung area/body weight ratio had a higher diagnostic accuracy than other parameters.Sensitivity of the parameters,including lung area,lung area/body weight ratio,thoracic circumference/abdominal circumference ratio,lung area/thoracic area ratio and lung area/head circumference were 83%,97%,50%,70% and 87%,respectively.Sensitivity of the lung area/bedy weight ratio was 95%(20/21 fetuses);specificity,9/9 fetuses;positive predictive value,100% (20/20fetuses);negative predictive value,9/10;and accuracy 97% (29/30 fetuses).Conclusion Lung area/body weight ratio is a good predictor of pulmonary hypoplasia.

To investigate the effects of active ingredients of Plastrum Testudinis (PT) on serum deprivation-induced apoptosis of epidermal stem cells (ESCs).

Objective To explore the risk factors of hidden blood loss after UKA.Methods A retrospec-tive study was conducted on 273 patients who underwent UKA from January 2015 to December 2016,including 79 males and 194 females,age between 46 to 87 years old,mean age(67.21± 8.23)years old. The clinical data were collected and the blood volume was calculated according to the Nadler formula. The Gross equation was used to calculate the blood loss and the amount of occult blood loss at 3 days after operation. The risk factors were analyzed statistically. Results The volume of hidden blood loss after operation was(75.36 ± 10.21)mL,and the volume of total blood lost after operation was(187.35± 60.31)mL.Sex,BMI and type of prosthesis were risk factors for hidden blood loss after UKA. Conclusions The volume of hidden blood loss after UKA was related to sex, BMI,and type of prosthesis. For the obese and male patients,we should actively take bleeding management and choose the type of prosthesis reasonably.

Systemic treatment is the first choice for patients with advanced hepatocellular carcinoma. Atezolizumab combined with bevacizumab can bring better survival for patients with advanced hepatocellular carcinoma. The authors introduce the efficacy and safety management of a hepatocellular carcinoma case with postoperative recurrence who received treatment of atezoli-zumab combined with bevacizumab. The patient had a probability of pseudoprogression during treatment, and had a good result of a continuous partial response over 2 years.

Based on medical cases about ginger juice in A Clinical Guide with Case Histories （《临证指南医案》）， we found that YE Tianshi apply ginger juice into the medicine mainly take its function of warming stomach to stop nausea， acrid-moist to unblock the collaterals， dissolving phlegm to expel fluid retention. It is often used with Ganjiang （Zingiber officinale）， Fuzi （Cyperus rotundus） and other warm medicinals to warm the yang qi； with Banxia （Pinellia ternata）， Huanglian （Picrorhiza kurroa） and other bitter-acrid medicinals to clear dampness and heat； with Zhuli （Arundo donax）， Juhong （Citrus reticulata） and other phlegm-resolving medicinals to clear turbid phlegm. Compared with the whole ginger， ginger juice is soft and easy to be absorbed； it is acrid-moist and can unblock the collaterals with stronger power. At the same time， it can enhance the effect of dissolving phlegm to expel fluid retention. Ginger juice can improve the efficacy of the medicinals and broaden the scope of ginger's medicinal use.

ObjectiveTo investigate the developmental characteristics of gross motor skills and executive functions, and the correlation between them in school-age children with attention deficit hyperactivity disorder (ADHD). MethodsFrom November, 2020 to May, 2021, 90 children with ADHD were recruited from Peking University Sixth Hospital and Beijing Haidian Wanquan Primary School, and other 90 children with normal development from this primary school were recruited matched their age and gender. Gross motor skills were assessed with the Test of Gross Motor Development in Children, Third Edition (TGMD-3), and inhibitory control, working memory, and cognitive flexibility were assessed with Stroop Color Words Test (SCWT), Rey-Osterrich Complex Figure Test (ROCFT) and Trail Making Test (TMT), respectively. ResultsThe TGMD-3 score was significantly lower in children with ADHD than in normal children (t = -6.275, P < 0.001), while the test results of SCWT, ROCFT and TMT were worse (|t| ≥ 1.986, P ≤ 0.05). The TGMD-3 score of children with ADHD was negatively correlated with the word sense reaction time (r = -0.261), the number of word sense errors (r = -0.404) and the number of color errors (r = -0.326) (P < 0.05), positively correlated with the delayed structural memory scores (r = 0.228) (P < 0.05), and negatively correlated with the TMT-A reaction time (r = -0.255), the number of TMT-A errors (r = -0.329), TMT-B reaction time (r = -0.214) and the number of TMT-B errors (r = -0.474) (P < 0.05). Stratified linear regression analyses showed that the TGMD-3 score of children with ADHD was significant only in predicting test results for inhibitory control and cognitive flexibility (P < 0.05), with explanations of 8.7% and 22.5%, respectively. ConclusionDevelopments of both gross motor skills and executive function delay in children with ADHD, and there is a relation between them, especially the level of gross motor skills relating to the developments of inhibitory control and cognitive flexibility.

Objective:To explore the application effect of disease-oriented digitalized teaching model in the undergraduate teaching of stomatology.Methods:A total of 34 undergraduate students in clinical medicine from Batch 2018 were selected as the control group 1, 24 undergraduate students in stomatology from Batch 2015 were selected as the control group 2, and 23 undergraduate students in stomatology from Batch 2018 were collected as the experimental group. The two control groups all accepted the traditional teaching mode, and the experimental group accepted the disease-oriented digitalized teaching model. Finally, the teaching effect was evaluated through questionnaire surveys and less difficult oral professional tests. The SPSS 24.0 was used to conduct t test. Results:After accepting this teaching model, students improved their understanding of the concept of "organism" and "disease" ( P<0.05), and they had a positive evaluation of this teaching model. It was found that the tests scores of the experimental group (42.17±1.21) were significantly higher than those of non-dental major students of the same Batch (24.71±1.42) ( P<0.05), with significant differences, while without significant difference between the tests scores of the senior stemmatological students (43.33±1.30) ( P>0.05). Conclusion:This teaching model enables students to establish the concept of "organism" and form a disease-oriented knowledge framework before entering the decentralized professional courses, which may further stimulates the interest of junior students in their majors, and enhances their professional awareness compared with traditional teaching model. It's also a useful exploration for teaching hospitals to conduct teaching activities of junior undergraduates outside the classroom.