Objective:To investigate the clinical features and prognosis of septic shock(SS) children with different basic diseases in pediatric intensive care unit (PICU).Methods:The medical records of SS children admitted to PICU at Beijing Children′s Hospital from January 1, 2017 to December 31, 2019 were collected retrospectively.They were grouped according to the presence or absence of basic diseases and types of basic diseases.The clinical characteristics, prognosis and pathogens of SS under different basic diseases were summarized.Results:A total of 218 children with SS were included during the study period, and the overall case fatality rate was 21.6%(47/218). There were 141 cases with basic diseases, accounting for 64.7%(141/218) and 24.1%(34/141) case fatality rate.The mortality rate was highest(37.5%, 17/45) in the malignant hematologic diseases and tumors patients with post-chemotherapy bone marrow suppression, and lowest(16.9%, 13/77) in patients with no underlying diseases.Gram-negative bacterial infection was more common in SS children with underlying diseases(63.1%, 41/65), and was highest in the malignant hematologic diseases and tumors patients with post-chemotherapy bone marrow suppression(80.0%, 20/25). Gram-positive bacteria accounted for the highest proportion in the group without underlying disease(52.1%, 25/48). The incidence of multiple organ dysfunction syndrome(MODS) was the highest(95.6%, 43/45) in the malignant hematologic diseases and tumors patients with post-chemotherapy bone marrow suppression, and the lowest(59.7%, 46/77) in the group without underlying disease.Conclusion:Gram-negative bacteria is the most common pathogen in SS children with underlying diseases, especially in malignant hematologic diseases and tumors patients with post-chemotherapy bone marrow suppression, and with high mortality and incidence of MODS.Gram-positive bacteria is the most common pathogen for those without underlying diseases, with a relatively low mortality and incidence of MODS.

Objective: To explore the relationship between premenarchal dietary carbohydrate and dietary fiber intakes and age at menarche in Chinese girls. Methods: Based on dietary and menarcheal information on 750 girls from the Chinese Health and Nutrition Survey, multivariate linear regression models and logistic models were used to analyze the influence of dietary carbohydrate and dietary fiber intakes before menarche onset and age at menarche. Carbohydrate intake was replaced by engergg ratio carbohydrate for a sensitivity analysis. Results: Adjusting for residence, per capita household income, body mass index standard deviation score, and energy intake, higher intake and higher energy ratio of carbohydrate were associated with later age at menarche(P<0.01). Compared to girls at the lowest tertile of carbohydrate intake level, those at the highest tertile had a 0.35 years(2.8%) delay in age at menarche, while 55% decreased[OR(95%CI)=0.45(0.30-0.69)]. Dietary fiber intake was not associated with age at menarche in any model(P>0.2). Conclusion Girls with higher premenarcheal carbohydrate intake experienced menarche later, while dietary fiber intake was not associated with age at menarche.

Objective:To evaluate the prognostic value of arterial lactate (Lac) combined with central venous-to-arterial carbon dioxide difference to arterial-to-central venous oxygen content difference ratio (Pcv-aCO 2/Ca-cvO 2) in patients with septic shock following early fluid resuscitation. Methods:A total of 97 patients with septic shock admitted to intensive care unit (ICU) of Lanzhou University Second Hospital from January 2017 to December 2019 were enrolled. The Pcv-aCO 2/Ca-cvO 2 ratio was calculated from blood gas analysis of radial artery and superior vena cava which was performed before resuscitation and at 6 hours of resuscitation at the same time. The patients were divided into death group and survival group according to the 28-day prognosis. The baseline data, acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) score, sequential organ failure score (SOFA), clinical therapy, lactate clearance rate (LCR) at 6 hours, the length of ICU stay, hemodynamics and oxygen metabolism parameters before and after resuscitation were compared between the two groups. Risk factors were analyzed by multivariate Cox regression for 28-day mortality of patients with septic shock. The receiver operating characteristic (ROC) curve was plotted to assess the prognostic values of these factors for 28-day mortality. Results:① Compared with the survival group, the patients in the death group showed significantly higher levels of APACHEⅡ score (23.96±4.31 vs. 17.70±3.92) and SOFA score (12.74±2.80 vs. 9.23±2.43, both P < 0.01), significantly higher proportions of mechanical ventilation [85.2% (23/27) vs. 50.0% (35/70)] and continuous renal replacement therapy [CRRT; 51.9% (14/27) vs. 25.7% (18/70), both P < 0.05], a significantly more fluid replacement at 6 hours (L: 2.92±0.24 vs. 2.63±0.25, P < 0.01), a significantly lower level of LCR at 6 hours [(11.61±7.76)% vs. (27.67±13.71)%, P < 0.01], and a shorter length of ICU stay (days: 6.37±2.70 vs. 7.67±2.31, P < 0.05). ② Compared with the survival group, the patients before resuscitation in the death group showed a significantly lower level of mean arterial pressure [MAP (mmHg, 1 mmHg = 0.133 kPa): 52.63±4.35 vs. 55.74±3.01, P < 0.01], significantly higher levels of Lac and Pcv-aCO 2/Ca-cvO 2 ratio [Lac (mmol/L): 7.13±1.75 vs. 5.22±1.36, Pcv-aCO 2/Ca-cvO 2 ratio: 1.67±0.29 vs. 1.48±0.22, both P < 0.01]; and the patients at 6 hours of resuscitation in the death group showed a significantly lower level of MAP (mmHg: 62.59±4.80 vs. 66.71±3.91, P < 0.01), significantly higher levels of central venous pressure (CVP), Lac, Pcv-aCO 2 and Pcv-aCO 2/Ca-cvO 2 ratio [CVP (mmHg): 10.74±1.40 vs. 8.80±0.75, Lac (mmol/L): 6.36±1.86 vs. 3.90±1.95, Pcv-aCO 2 (mmHg): 7.59±2.02 vs. 4.34±1.37, Pcv-aCO 2/Ca-cvO 2 ratio: 1.87±0.51 vs. 1.03±0.27, all P < 0.01]. ③ Multivariate Cox regression analysis showed that the independent risk factors for 28-day mortality in patients with septic shock were Lac and Pcv-aCO 2/Ca-cvO 2 ratio whether before or at 6 hours of resuscitation [Lac before resuscitation: relative risk ( RR) = 1.434, 95% confidence interval (95% CI) was 1.070-1.922, P = 0.016; Lac at 6 hours of resuscitation: RR = 1.564, 95% CI was 1.202-2.035, P = 0.001; Pcv-aCO 2/Ca-cvO 2 ratio before resuscitation: RR = 2.828, 95% CI was 1.108-4.207, P = 0.038; Pcv-aCO 2/Ca-cvO 2 ratio at 6 hours of resuscitation: RR = 4.386, 95% CI was 2.842-5.730, P = 0.000]. ④ ROC curve analysis showed that Lac and Pcv-aCO 2/Ca-cvO 2 ratio at 6 hours of resuscitation had predictive value for the prognosis of patients with septic shock, the area under ROC curve (AUC) was 0.849 (95% CI was 0.762-0.914) and 0.905 (95% CI was 0.828-0.955), respectively. However, the predictive value of Lac combined with Pcv-aCO 2/Ca-cvO 2 ratio in patients with septic shock was significantly higher than Lac [AUC (95% CI): 0.976 (0.923-0.996) vs. 0.849 (0.762-0.914), Z = 3.354, P = 0.001], the sensitivity was 97.14%, and the specificity was 88.89%. Conclusions:Lac and Pcv-aCO 2/Ca-cvO 2 ratio are independent risk factors for predicting 28-day mortality in patients with septic shock. Lac combined with Pcv-aCO 2/Ca-cvO 2 ratio can assess the prognosis of patients with septic shock more accurately.

Objective: To investigate the prospective effects of the consumption of protein and animal foods before menarche on the age at menarche among Chinese girls. Methods: This paper was based on the data collected in the China Health and Nutrition Survey(CHNS) from 1997 to 2015. A total of 683 girls aged 6 and over who had completed information on age at menarche, height, weight, per capita annual household income, maternal education level and participated in at least one complete dietary survey within 1 to 4 years before menarche were included. Urban-rural stratified multivariable linear regression model was used to examine the effects of protein and animal foods intake before menarche on Chinese girls age at menarche in urban and rural areas. Results: After adjusted for total energy intake, body mass index standard deviation score and per capita annual household income, the consumption of meat before menarche was negatively associated with the age at menarche among rural Chinese girls(B=-0.003, P=0.00), but not among urban Chinese girls(B=0.002, P>0.05). Total protein, dairy, eggs and aquatic products intake before menarche were not associated with Chinese girls age at menarche in urban and rural areas(B=0.002, -0.001, 0.003, 0.000; 0.001, 0.001, -0.001, -0.003, P>0.05). Conclusion Higher intake of meat before menarche might lead to earlier menarche onset in rural Chinese girls. The consumption of total protein, dairy, eggs, and aquatic products before menarche did not affect the age at menarche in Chinese girls.

OBJECTIVE To analyze the influential factors of cardioto xicity in patients with positive breast cancer of human epidermal growth factor receptor 2（HER-2）treated by trastuzumab combined with chemotherapy. METHODS From April 2017 to January 2021，200 HER-2 positive breast cancer patients receiving pirarubicin + cyclophosphamide combined with sequential paclitaxel+trastuzumab were collected from our hospital. According to the presence or absence of cardiotoxicity ，the patients were divided into cardiotoxicity group and non-cardiotoxicity group. The clinical data and echocardiographic results of the patients were collected，and the influential factors of cardiotoxicity were analyzed. RESULTS Among 200 patients，43 patients suffered from cardiotoxicity with the incidence of 21.5％. The proportion of patients with cardiotoxicity during pirarubicin+cyclophosphamide therapy accounted for 5.5％（11/200），and the proportion of patients with cardiotoxicity during sequential paclitaxel+trastuzumab therapy accounted for 20.5％（41/200）；the latter was significantly higher than the former （P＜0.01）. At the same time ，the decrease of left ventricular ejection fraction during sequential therapy of paclitaxel and trastuzumab was significantly higher than that during pirarubicin+cyclophosphamide therapy [ 14％（12％，17％）vs. 7％（3％，10％），P＜0.001]. Compared with patients without cardiotoxicity ，the proportion of patients with cardiotoxicity with a history of hyperlipidemia was significantly higher （P＜ 0.01），while the proportion of patients receiving dexrazoxane was significantly lower （P＜0.01）. Results of binary Logistic regression analysis showed that the history of hyperlipidemia [OR ＝3.672，95％ CI（1.499，8.992），P＝0.004] and the use of dextrazoxane [OR ＝0.154，95％ CI（0.072，0.330）， P＜0.001] were associated with the occurrence of cardiotoxicity. CONCLUSIONS Hyperlipidemia is an independent risk factor for cardiotoxicity induced by pirarubicin + cyclophosphamide combined with sequential paclitaxel+trastuzumab in HER 2 positive breast cancer patients ，while the use of dextrazoxane is a protective factor.

Objective: To characterize the relations between the practice of parenting and associated factors on children (0-5 years old) in urban areas of China, in order to provide evidence for promoting the early development of children and to provide positive guidance and service programs on parenting. Methods: A total of 4 515 parents from 15 cities (14 provinces) were surveyed with a self-administered questionnaire. Parenting and Family Adjustment Scales (PAFAS) was used, including parameters as: consistency and coercive parenting, positive encouragement, parent-child relationship and parental emotion adjustment, family relationship and parental teamwork aspects, etc. Both single factor analysis and multiple linear regression were used to examine the associations between parenting practice, individual, parental and family factors. Results: The mean score of PAFAS was 21.00 (15.00-28.00), associated with factors as children’s age, only-child family, premature delivery, father’s education level, confidence on parenting, problems regarding the parental mood, annual family income, family structure and behavior on seeking professional help, etc. Results showed that there were big differences on the practice of parenting in China and influenced by variety of factors. Conclusions The general situation of parenting was well, in the urban areas of China. The practice of parenting was associated with a series of individual, parental and family factors. Programs on improving the parenting skills and promoting the early development of children, should be highlighted.