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BACKGROUND: Necrotizing enterocolitis (NEC) is a serious gastrointestinal disease, primarily affects preterm newborns and occurs after 7 days of life (late-onset NEC, LO-NEC). Unfortunately, over the past several decades, not much progress has been made in its treatment or prevention. This study aimed to analyze the risk factors for LO-NEC, and the impact of LO-NEC on short-term outcomes in very preterm infants (VPIs) with a focus on nutrition and different onset times. METHOD: Clinical data of VPIs were retrospectively collected from 28 hospitals in seven different regions of China from September 2019 to December 2020. A total of 2509 enrolled VPIs were divided into 2 groups: the LO-NEC group and non-LO-NEC group. The LO-NEC group was divided into 2 subgroups based on the onset time: LO-NEC occurring between 8 ~ 14d group and LO-NEC occurring after 14d group. Clinical characteristics, nutritional status, and the short-term clinical outcomes were analyzed and compared among these groups. RESULTS: Compared with the non-LO-NEC group, the LO-NEC group had a higher proportion of anemia, blood transfusion, and invasive mechanical ventilation (IMV) treatments before NEC; the LO-NEC group infants had a longer fasting time, required longer duration to achieve the target total caloric intake (110 kcal/kg) and regain birthweight, and showed slower weight growth velocity; the cumulative dose of the medium-chain and long-chain triglyceride (MCT/LCT) emulsion intake in the first week after birth was higher and breastfeeding rate was lower. Additionally, similar results including a higher proportion of IMV, lower breastfeeding rate, more MCT/LCT emulsion intake, slower growth velocity were also found in the LO-NEC group occurring between 8 ~ 14d when compared to the LO-NEC group occurring after 14 d (all (P < 0.05). After adjustment for the confounding factors, high proportion of breastfeeding were identified as protective factors and long fasting time before NEC were identified as risk factors for LO-NEC; early feeding were identified as protective factors and low gestational age, grade III ~ IV neonatal respiratory distress syndrome (NRDS), high accumulation of the MCT/LCT emulsion in the first week were identified as risk factors for LO-NEC occurring between 8 ~ 14d. Logistic regression analysis showed that LO-NEC was a risk factor for late-onset sepsis, parenteral nutrition-associated cholestasis, metabolic bone disease of prematurity, and extrauterine growth retardation. CONCLUSION: Actively preventing premature birth, standardizing the treatment of grade III ~ IV NRDS, and optimizing enteral and parenteral nutrition strategies may help reduce the risk of LO-NEC, especially those occurring between 8 ~ 14d, which may further ameliorate the short-term clinical outcome of VPIs. TRIAL REGISTRATION: ChiCTR1900023418 (26/05/2019).
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Enterocolite Necrosante , Doenças do Prematuro , Síndrome do Desconforto Respiratório do Recém-Nascido , Feminino , Recém-Nascido , Humanos , Recém-Nascido Prematuro , Estado Nutricional , Enterocolite Necrosante/epidemiologia , Enterocolite Necrosante/etiologia , Enterocolite Necrosante/prevenção & controle , Emulsões , Estudos Retrospectivos , Doenças do Prematuro/epidemiologia , Doenças do Prematuro/etiologia , Doenças do Prematuro/prevenção & controle , Fatores de RiscoRESUMO
BACKGROUND: To analyze the real-world growth pattern of very premature infants (VPI) with small for gestational age (SGA) after birth by using the ΔZ value of weight at discharge. METHODS: The clinical data were collected from 28 hospitals in China from September 2019 to December 2020. They were divided into the EUGR(Extrauterine Growth Restriction) and the non-EUGR group according to the criterion of ΔZ value of weight at discharge < -1.28. RESULTS: This study included 133 eligible VPI with SGA. Following the criterion of ΔZ value, the incidence of EUGR was 36.84% (49/133). The birth weight, the 5-min Apgar score, and the proportion of male infants in the EUGR group were lower (P < 0.05). The average invasive ventilation time, cumulative duration of the administration of antibiotics, blood transfusion time, blood transfusion ratio, and total days of hospitalization were significantly higher in the EUGR group (P < 0.05). In the EUGR group, several factors exhibited higher values (P < 0.05), including the initiation of enteral feeding, the volume of milk supplemented with human milk fortifier (HMF), the duration to achieve complete fortification, the cumulative duration of fasting, the duration to achieve full enteral feeding, the length of parenteral nutrition (PN), the number of days required to attain the desired total calorie intake and oral calorie intake, as well as the age at which birth weight was regained. The average weight growth velocity (GV) was significantly lower in the EUGR group (P < 0.001). The incidences of patent ductus arteriosus with hemodynamic changes (hsPDA), neonatal necrotizing enterocolitis (NEC) stage≥ 2, late-onset sepsis (LOS), and feeding intolerance (FI) in the EUGR group were higher (P < 0.05). Multivariate logistic regression analysis showed that birth weight, male, and GV were the protective factors, while a long time to achieve full-dose fortification, slow recovery of birth weight, and NEC stage ≥2 were the independent risk factors. CONCLUSION: SGA in VPI can reflect the occurrence of EUGR more accurately by using the ΔZ value of weight at discharge. Enhancing enteral nutrition support, achieving prompt and complete fortification of breast milk, promoting greater GV, reducing the duration of birth weight recovery, and minimizing the risk of NEC can contribute to a decreased occurrence of EUGR. TRIAL REGISTRATION: CHICTR, ChiCTR1900023418. Registered 26/05/2019, http://www.chictr.org.cn .
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Doenças do Recém-Nascido , Doenças do Prematuro , Feminino , Lactente , Masculino , Recém-Nascido , Humanos , Peso ao Nascer , Idade Gestacional , China/epidemiologia , Leite Humano , Recém-Nascido PrematuroRESUMO
OBJECTIVE: Nutritional deficiency soon after birth is a risk factor of chronic lung disease (bronchopulmonary dysplasia, BPD). Afflicted infants are further prone to inadequate growth during hospitalization (extrauterine growth restriction, EUGR). This multi-center retrospective study investigated risk factors of EUGR, specifically in very preterm infants with BPD. METHOD: Data of infants with BPD who were born less than 32 weeks gestation (n = 1010) were collected from 7 regions of China. All infants were non-small for gestational age at birth. Infants were characterized as EUGR or non-EUGR at 36 weeks gestation or discharge, or stratified by gestational age or birthweight. Logistic regression analysis was applied. RESULTS: In 65.5% of the population, the BPD was mild. Infants with severe BPD (8.3%) had the highest rate of EUGR (72.6%, P < 0.001). Groups stratified by gestational age did not differ in rates of EUGR, but the birthweight of the EUGR group was significantly lower than that of the non-EUGR (P < 0.001). Birthweights of < 1000, 1000-1499, and ≥ 1500 g showed EUGR rates of 65.9%, 43.4%, and 23.8%, respectively (P < 0.001). Overall, the independent risk factors of EUGR were: moderate-to-severe BPD, gestational hypertension, cesarean section, cumulative fasting time, time required to achieve 110 kcal/kg/d, and hemodynamically significant patent ductus arteriosus (hsPDA). CONCLUSION: In very preterm infants with BPD, the lower the birthweight or the more severe the BPD, the greater the risk of EUGR. In those with hsPDA, or moderate-to-severe BPD, it is especially important to prevent EUGR through perinatal management, enteral nutrition, and nutritional strategies.
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Displasia Broncopulmonar , Doenças do Prematuro , Peso ao Nascer , Displasia Broncopulmonar/complicações , Displasia Broncopulmonar/epidemiologia , Cesárea , Feminino , Retardo do Crescimento Fetal/epidemiologia , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Doenças do Prematuro/epidemiologia , Doenças do Prematuro/etiologia , Gravidez , Estudos Retrospectivos , Fatores de RiscoRESUMO
OBJECTIVES: To investigate the incidence of extrauterine growth retardation (EUGR) and its risk factors in very preterm infants (VPIs) during hospitalization in China. METHODS: A prospective multicenter study was performed on the medical data of 2 514 VPIs who were hospitalized in the department of neonatology in 28 hospitals from 7 areas of China between September 2019 and December 2020. According to the presence or absence of EUGR based on the evaluation of body weight at the corrected gestational age of 36 weeks or at discharge, the VPIs were classified to two groups: EUGR group (n=1 189) and non-EUGR (n=1 325). The clinical features were compared between the two groups, and the incidence of EUGR and risk factors for EUGR were examined. RESULTS: The incidence of EUGR was 47.30% (1 189/2 514) evaluated by weight. The multivariate logistic regression analysis showed that higher weight growth velocity after regaining birth weight and higher cumulative calorie intake during the first week of hospitalization were protective factors against EUGR (P<0.05), while small-for-gestational-age birth, prolonged time to the initiation of total enteral feeding, prolonged cumulative fasting time, lower breast milk intake before starting human milk fortifiers, prolonged time to the initiation of full fortified feeding, and moderate-to-severe bronchopulmonary dysplasia were risk factors for EUGR (P<0.05). CONCLUSIONS: It is crucial to reduce the incidence of EUGR by achieving total enteral feeding as early as possible, strengthening breastfeeding, increasing calorie intake in the first week after birth, improving the velocity of weight gain, and preventing moderate-severe bronchopulmonary dysplasia in VPIs.
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Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Feminino , Retardo do Crescimento Fetal , Idade Gestacional , Hospitalização , Humanos , Incidência , Lactente , Recém-Nascido , Estudos Prospectivos , Fatores de RiscoRESUMO
OBJECTIVE: To investigate the incidence rate and risk factors for metabolic bone disease of prematurity (MBDP) in very low birth weight/extremely low birth weight (VLBW/ELBW) infants. METHODS: The medical data of 61 786 neonates from multiple centers of China between September 1, 2013 and August 31, 2016 were retrospectively investigated, including 504 VLBW/ELBW preterm infants who met the inclusion criteria. Among the 504 infants, 108 infants diagnosed with MBDP were enrolled as the MBDP group and the remaining 396 infants were enrolled as the non-MBDP group. The two groups were compared in terms of general information of mothers and preterm infants, major diseases during hospitalization, nutritional support strategies, and other treatment conditions. The multivariate logistic regression analysis was used to investigate the risk factors for MBDP. RESULTS: The incidence rate of MBDP was 19.4% (88/452) in VLBW preterm infants and 38.5% (20/52) in ELBW preterm infants. The incidence rate of MBDP was 21.7% in preterm infants with a gestational age of < 32 weeks and 45.5% in those with a gestational age of < 28 weeks. The univariate analysis showed that compared with the non-MBDP group, the MBDP group had significantly lower gestational age and birth weight, a significantly longer length of hospital stay, and a significantly higher incidence rate of extrauterine growth retardation (P < 0.05). Compared with the non-MBDP group, the MBDP group had significantly higher incidence rates of neonatal sepsis, anemia, hypocalcemia, and retinopathy of prematurity (P < 0.05). The MBDP group had a significantly lower mean feeding speed, a significantly higher age when reaching total enteral feeding, and a significantly longer duration of parenteral nutrition (P < 0.05). The use rate of caffeine citrate in the MBDP group was significantly higher, but the use rate of erythropoietin was significantly lower than that in the non-MBDP group (P < 0.05). The multivariate logistic regression analysis showed that gestational age < 32 weeks, hypocalcemia, extrauterine growth retardation at discharge, and neonatal sepsis were risk factors for MBDP (P < 0.05). CONCLUSIONS: A lower gestational age, hypocalcemia, extrauterine growth retardation at discharge, and neonatal sepsis may be associated an increased risk of MBDP in VLBW/ELBW preterm infants. It is necessary to strengthen perinatal healthcare, avoid premature delivery, improve the awareness of the prevention and treatment of MBDP among neonatal pediatricians, and adopt positive and reasonable nutrition strategies and comprehensive management measures for preterm infants.
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Doenças Ósseas Metabólicas , Recém-Nascido de Peso Extremamente Baixo ao Nascer , Peso ao Nascer , Doenças Ósseas Metabólicas/epidemiologia , Doenças Ósseas Metabólicas/etiologia , China/epidemiologia , Feminino , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Gravidez , Estudos Retrospectivos , Fatores de RiscoRESUMO
Inadequate nutrition supply in the early stage after birth is a risk factor for the development of bronchopulmonary dysplasia (BPD) in preterm infants, and it is also closely associated with the progression and clinical outcome of BPD. Optimized nutritional support is of great importance to reduce the incidence and severity of BPD and promote lung development and neurological prognosis. Based on the relevant studies in China and overseas, the expert consensus on BPD nutrition management is developed by the Grading of Recommendations Assessment, Development and Evaluation (GRADE) method. The consensus includes the following seven aspects: the importance of nutrition in BPD, fluid intake, energy intake, enteral nutrition, parenteral nutrition, post-discharge nutrition, and nutrition monitoring and evaluation.
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Displasia Broncopulmonar , Assistência ao Convalescente , China , Consenso , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Alta do PacienteRESUMO
A boy, aged 5 years, was admitted due to chest pain for 4 months, right lower limb weakness for 2 months, and weakness of both lower limbs for 10 days. There were no symptoms of defecation/urination disorders or disturbance of consciousness, and the boy had upper motor neuron paralysis in both lower limbs, without cranial nerve involvement or sensory disorder. Spine magnetic resonance imaging revealed tumor in the spinal canal between cervical vertebra 6 and thoracic vertebra 2, which put pressure on the spinal cord. He was transferred to the department of neurosurgery for surgical treatment and fully recovered after tumor resection, and no recurrence was observed after 6 years of follow-up. The pathological diagnosis was clear cell meningioma (WHO grade II). For children with chest pain and dyskinesia, spinal meningioma should be considered.
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Dor no Peito/etiologia , Neoplasias Meníngeas , Meningioma , Pré-Escolar , Humanos , Extremidade Inferior , Imageamento por Ressonância Magnética , Masculino , Neoplasias Meníngeas/complicações , Meningioma/complicações , Recidiva Local de NeoplasiaRESUMO
A female infant was admitted to the hospital due to perioral cyanosis two hours after birth. The infant was born at the gestational age of 35 weeks by cesarean section with a birth weight of 2 400â g. Physical examination revealed wry mouth to the left side while crying, small auricles, and high palatal arch; fibrolaryngoscopy suggested bilateral vocal cord paralysis; echocardiography suggested ventricular septal defect; single nucleotide polymorphism testing showed 22q11.21 microdeletion. Therefore, the infant was given a definite diagnosis of asymmetric crying facies syndrome accompanied by 22q11.21 microdeletion. After 8-month follow-up, the infant still had asymmetric crying facies with presence of growth retardation.
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Paralisia Facial , Cardiopatias Congênitas , Paralisia das Pregas Vocais , Cesárea , Choro , Feminino , Humanos , Lactente , GravidezRESUMO
Background: Hyperglycemia in pregnancy (HGP) has generally been considered a risk factor associated with adverse outcomes in offspring, but its impact on the short-term outcomes of very preterm infants remains unclear. Methods: A secondary analysis was performed based on clinical data collected prospectively from 28 hospitals in seven regions of China from September 2019 to December 2020. According to maternal HGP, all infants were divided into the HGP group or the non-HGP group. A propensity score matching analysis was used to adjust for confounding factors, including gestational age, twin or multiple births, sex, antenatal steroid administration, delivery mode and hypertensive disorders of pregnancy. The main complications and the short-term growth status during hospitalization were evaluated in the HGP and non-HGP groups. Results: A total of 2,514 infants were eligible for analysis. After matching, there were 437 infants in the HGP group and 874 infants in the non-HGP group. There was no significant difference between the two groups in main complications including respiratory distress syndrome, bronchopulmonary dysplasia, necrotizing enterocolitis, retinopathy of prematurity, patent ductus arteriosus, culture positive sepsis, intraventricular hemorrhage, periventricular leukomalacia, anemia, feeding intolerance, metabolic bone disease of prematurity, or parenteral nutrition-associated cholestasis. The incidences of extrauterine growth retardation and increased growth retardation for weight and head circumference in the non-HGP group were all higher than those in the HGP group after matching (P < 0.05). Conclusions: HGP did not worsen the short-term outcomes of the surviving very preterm infants, as it did not lead to a higher risk of the main neonatal complications, and the infants' growth improved during hospitalization.
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The aim of this study was to develop a real-time risk prediction model for extrauterine growth retardation (EUGR). A total of 2514 very preterm infants were allocated into a training set and an external validation set. The most appropriate independent variables were screened using univariate analysis and Lasso regression with tenfold cross-validation, while the prediction model was designed using binary multivariate logistic regression. A visualization of the risk variables was created using a nomogram, while the calibration plot and receiver operating characteristic (ROC) curves were used to calibrate the prediction model. Clinical efficacy was assessed using the decision curve analysis (DCA) curves. Eight optimal predictors that namely birth weight, small for gestation age (SGA), hypertensive disease complicating pregnancy (HDCP), gestational diabetes mellitus (GDM), multiple births, cumulative duration of fasting, growth velocity and postnatal corticosteroids were introduced into the logistic regression equation to construct the EUGR prediction model. The area under the ROC curve of the training set and the external verification set was 83.1% and 84.6%, respectively. The calibration curve indicate that the model fits well. The DCA curve shows that the risk threshold for clinical application is 0-95% in both set. Introducing Birth weight, SGA, HDCP, GDM, Multiple births, Cumulative duration of fasting, Growth velocity and Postnatal corticosteroids into the nomogram increased its usefulness for predicting EUGR risk in very preterm infants.
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Idade Gestacional , Recém-Nascido Prematuro , Curva ROC , Humanos , Recém-Nascido , Feminino , Recém-Nascido Prematuro/crescimento & desenvolvimento , Gravidez , Masculino , Nomogramas , Peso ao Nascer , Recém-Nascido Pequeno para a Idade Gestacional/crescimento & desenvolvimento , Fatores de Risco , Diabetes Gestacional/diagnóstico , Retardo do Crescimento Fetal/diagnóstico , Modelos LogísticosRESUMO
OBJECTIVES: The management of enteral nutrition in very preterm infants (VPIs) is still controversial, and there is no consensus on the optimal time point after birth at which enteral nutrition can be started. The aim of this study was to investigate the effect of early initiation of enteral nutrition on the short-term clinical outcomes of VPIs. METHODS: Data of infants (n = 2514) born before 32 wk of gestation were collected from 28 hospitals located in seven different regions of China. Based on whether enteral feeding was initiated within or after 24 h since birth, the infants were divided into an early initiation of enteral feeding (EIEF) group and a delayed initiation of enteral feeding (DIEF) group. RESULTS: Compared with the DIEF group, the EIEF group was more likely to tolerate enteral nutrition and had less need for parenteral nutrition (all P < 0.05). The EIEF group was associated with lower incidence rates of feeding intolerance, extrauterine growth restriction (EUGR), and late-onset sepsis (LOS) (all P < 0.05). There was no significant difference in the incidence of necrotizing enterocolitis (NEC) (Bell stage ≥2) between the two groups (P = 0.118). The multivariate logistic regression analysis revealed that EIEF was a protective factor against EUGR (odds ratio [OR], 0.621; 95% confidence interval [CI], 0.544-0.735; P < 0.001), feeding intolerance (OR, 0.658; 95% CI, 0.554-0.782; P < 0.001), and LOS (OR, 0.706; 95% CI, 0.550-0.906; P = 0.006). CONCLUSIONS: Early initiation of enteral feeding was associated with less frequency of feeding intolerance, EUGR, and LOS, and it may shorten the time to reach total enteral feeding without increasing the risk of NEC.
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Enterocolite Necrosante , Doenças do Prematuro , Sepse , Lactente , Feminino , Recém-Nascido , Humanos , Recém-Nascido Prematuro , Nutrição Enteral , Recém-Nascido de muito Baixo Peso , Retardo do Crescimento Fetal , Sepse/epidemiologia , Doenças do Prematuro/epidemiologia , Doenças do Prematuro/prevenção & controle , Enterocolite Necrosante/epidemiologia , Enterocolite Necrosante/prevenção & controle , China/epidemiologia , Estudos de CoortesRESUMO
BACKGROUND: The incidence of extrauterine growth retardation (EUGR) varies considerably in different countries due to the distinct definitions and inclusion criteria of individual studies. Most studies included small for gestational age (SGA) very preterm infants (VPIs), resulting in a higher incidence of EUGR. Experts have suggested the accurate definition of "EUGR" in SGA infants is not "true EUGR". The postnatal growth curve of multiple premature births also differs from that of singletons. As far as we know, there is no study about relationship between singleton-non-SGA preterm infants and EUGR. OBJECTIVES: To analyze the factors influencing EUGR among VPIs who were singleton-non-SGA in China. METHODS: A prospective-multicenter study was conducted in 28 hospitals distributed through China from September 2019 to December 2020. The clinical data on singleton-non-SGA among VPIs were divided into EUGR group (n = 692) and non-EUGR group (n = 912). RESULTS: Compared to non-EUGR group, the mean gestational age (GA), mean birth weight (BW) and percentage of BW in Fenton curve in EUGR group were lower (P < 0.001 for all). The incidence of EUGR among distinct GA groups (classifications of GA < 28weeks, 28-28+6 weeks, 29-29+6 weeks, 30-30+6 weeks and 31-31+6 weeks) and distinct BW groups (classifications of BW<1000 g, 1000-1249 g, 1250-1499 g, 1500-1999g and 2000-2500 g) were statistically significant (P = 0.004 and P <.001). Logistic regression analysis indicated that later addition of human milk fortifier (HMF), later attainment of HMF sufficient fortification, later return to BW, more accumulative days of fasting, longer duration of parenteral nutrition, total duration of oxygen support and moderate/severe bronchopulmonary dysplasia (BPD) were risk factors for the development of EUGR in singleton-non-SGA VPIs (P < 0.001, P = 0.002, P < 0.001, P = 0.002, P = 0.017, P = 0.003 and P = 0.002, respectively). The use of full-course antenatal steroids, greater BW as a percentile of the Fenton curve, breastfeeding initiation and faster average velocity of weight growth effectively protected against EUGR (P = 0.008, P < 0.001, P < 0.001 and P < 0.001, respectively). CONCLUSIONS: The overall incidence of EUGR was 43.1% among singleton-non-SGA VPIs in China. Raising the full-course antenatal steroids usage, reducing the incidence of moderate and severe BPD, attaching importance to the management of enteral nutrition in VPIs and increasing the weight growth velocity can reduce the incidence of EUGR.
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Displasia Broncopulmonar , Doenças do Prematuro , Lactente , Recém-Nascido , Feminino , Humanos , Gravidez , Idade Gestacional , Recém-Nascido Prematuro , Estudos Prospectivos , Recém-Nascido de muito Baixo Peso , Peso ao Nascer , Retardo do Crescimento Fetal/epidemiologia , Estudos RetrospectivosRESUMO
Objective: To investigate the incidence and related factors of extrauterine growth retardation (EUGR) and "true EUGR" in very preterm infants (VPI) from different regions of China. Materials and methods: Clinical data of VPI were prospectively collected from 28 hospitals in seven different regions of China from September 2019 to December 2020. The infants were divided into a small for gestational age (SGA) group or non-SGA group at birth, with non-SGA infants at 36 weeks of gestation or at discharge being further divided into a EUGR group or a non-EUGR group. Infants in the EUGR and non-SGA group were defined as "true EUGR." The general information of VPI, such as maternal complications during pregnancy, use of enteral nutrition and parenteral nutrition, and complications during hospitalization were compared between the groups. Results: Among the 2,514 VPI included in this study, 47.3, 41.5, and 33.3% of VPI were below the 10th percentile, and 22.6, 22.4, and 16.0% of VPI were below the 3rd percentile for weight, height, and head circumference at 36 weeks of gestation or at discharge, respectively, by the percentile on the 2013 Fenton curve. The incidences of EUGR and "true EUGR" evaluated by weight were 47.3 and 44.5%, respectively. Univariate analysis showed that there were statistically significant differences in the aspects of perinatal and nutritional characteristics, treatment, and complications between the groups. Multivariate analysis showed that in non-SGA infants, the cumulative caloric intake during the first week was a protective factor for "true EUGR," while days to reach total enteral nutrition, late initiation of human milk fortifier, and moderate to severe bronchopulmonary dysplasia were independent risk factors for "true EUGR." Conclusion: More attention should be paid to the nutritional management of VPI to prevent "true EUGR." Cumulative caloric intake should be ensured and increased during the first week, total enteral nutrition should be achieved as early as possible, human milk fortifier should be added early, and moderate to severe bronchopulmonary dysplasia should be prevented. These strategies are very important for reducing the incidence of "true EUGR" in VPI.
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OBJECTIVE: To further confirm and clarify the risk factors of melamine associated urolithiasis. METHODS: Case control research was performed in 6 centers from 5 provinces/cities in China. Children less than 36 months old were screened for urolithiasis and recruited in the study. The children with urolithiasis were included as cases and those without urolithiasis as controls. The children with congenital abnormality of urinary tract were excluded. According to the case:control ratios of 1:1, we sampled the controls from healthy children screened randomly. Due to the complete missing data on factors of vomiting/diarrhea/fever in control group of Center 4, we analyzed the data from 6 centers and 5 centers respectively. The possible influencing factors for urolithiasis including melamine concentration, birth type, age, feeding style and history of vomiting or diarrhea or fever were analyzed by Logistic analysis. RESULTS: There were 1 329 cases and 1 317 controls with a mean age of 18.4 months. The analysis of data from 6 centers showed the children fed with high melamine formula were 6.26 times more likely to have stones (P<0.01) than those with non melamine formula. Preterm infants were 2.03 times (P<0.01) more likely to have urolithiasis than term infants. The children aged less than 0.5 year, 0.5 to 1 year, 1 to 2 year, 2 to 2.4 year were 2.78 (P<0.01), 2.61 (P<0.01), 2.09 (P<0.01), 1.57 (P<0.01), 1.44 (P<0.05) times more likely to have stones than those more than 2.5 year. Boys were 1.19 times more likely to have stones than girls. Children fed with formula alone were 1.94 times (P<0.01) more likely to have stones than those with formula and breast milk. The analysis of data from 5 centers showed that children fed with high melamine formula were 4.38 times (P<0.01) more likely to have stones compared with those with non melamine formula. Children aged less than 1 year and 1 to 1.9 year were 2.24 (P<0.01) and 1.31 (P<0.05) times more likely to have stones than those more than 2 year. The children fed with formula alone were 1.67 times (P<0.01) more likely to have stones compared to those with formula and breast milk. The children with any two symptoms of vomiting, diarrhea and fever were 15.21 times (P<0.05) more likely to have urolithiasis. The multiple logistic regression model confirmed that above risk factors were independent risk factors for urolithiasis. CONCLUSION: We confirm that the children fed with high melamine infant formula, preterm infant, boy, children fed with formula alone, and the children with symptoms of vomiting or diarrhea or fever are more likely to have urolithiasis. We also found the risk for urolithiasis decreased with age.
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Contaminação de Alimentos/análise , Leite , Triazinas/efeitos adversos , Urolitíase/induzido quimicamente , Fatores Etários , Animais , Estudos de Casos e Controles , Pré-Escolar , China , Feminino , Humanos , Lactente , Masculino , Nascimento Prematuro , Fatores de Risco , Fatores Sexuais , Ultrassonografia , Urolitíase/diagnóstico por imagemRESUMO
OBJECTIVE: To understand the prognosis of the children with urinary calculi associated with exposure to melamine-contaminated formula. METHODS: A follow-up study was performed in 47 out-patients from the Third Hospital of Peking University who were diagnosed with urinary calculi associated with exposure to melamine-contaminated formula. Urinary tract B-ultrasound and renal function examinations were done during the 1 to 6-month follow-up. RESULTS: By the 6th month of follow-up, spontaneous stone passage was found in 36 children (77%). The follow-up failed in four children. None of the patients had any complications. Spontaneous stone passage was not associated with the volume and the period exposed to melamine in formula, but was associated with the location of calculi. The time to spontaneous stone passage in boys appeared to be longer than in girls, but there were no statistical differences. CONCLUSIONS: Spontaneous stone passage can be found in most children and the prognosis of children with urinary calculi associated with exposure to melamine-contaminated formula is good.
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Contaminação de Alimentos , Fórmulas Infantis , Triazinas/efeitos adversos , Cálculos Urinários/induzido quimicamente , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Lactente , Masculino , Prognóstico , Fatores SexuaisRESUMO
A 13-year-old girl presented with a 1-month history of progressive exertional dyspnea (NYHA class IV) and exophthalmos for 6 months. She had a history of long-standing asthma and the presence of allergy. Hypereosinophilia and increased serum IgE levels (2472 IU/mL) were observed. Chest radiography and a high resolution CT scan documented a massive interstitial pulmonary infiltration. Echocardiography confirmed mild tricuspid regurgitation, apical obliteration of the right ventricle by fibrocalcific thickening of the endocardium and echogenic material suggestive of thrombosis. Churg-Strauss syndrome with cardiac involvement (endomyocardiopathy) was diagnosed. The patient received anticoagulation and corticosteroid therapy. In view of rapidly progressive severe endomyocardiopathy and stable hematology, the patient was referred for cardiac surgery. Histopathological examination of resected specimens confirmed laminated thrombus but without any trace of eosinophils embedded.