Objective: To investigate the incidence and trend of short-term outcomes among preterm infants born <34 weeks' gestation. Methods: A secondary analysis of data from the standardized database established by a multicenter cluster-randomized controlled study "reduction of infection in neonatal intensive care units (NICU) using the evidence-based practice for improving quality (REIN-EPIQ) study". This study was conducted in 25 tertiary NICU. A total of 27 192 infants with gestational age <34 weeks at birth and admitted to NICU within the first 7 days of life from May 2015 to April 2018 were enrolled. Infants with severe congenital malformation were excluded. Descriptive analyses were used to describe the mortality and major morbidities of preterm infants by gestational age groups and different admission year groups. Cochran-Armitage test and Jonckheere-Terpstra test were used to analyze the trend of incidences of mortality and morbidities in 3 study-years. Multiple Logistic regression model was constructed to analyze the differences of outcomes in 3 study-years adjusting for confounders. Results: A total of 27 192 preterm infants were enrolled with gestational age of (31.3±2.0) weeks at birth and weight of (1 617±415) g at birth. Overall, 9.5% (2 594/27 192) of infants were discharged against medical advice, and the overall mortality rate was 10.7% (2 907/27 192). Mortality for infants who received complete care was 4.7% (1 147/24 598), and mortality or any major morbidity was 26.2% (6 452/24 598). The incidences of moderate to severe bronchopulmonary dysplasia, sepsis, severe intraventricular hemorrhage or periventricular leukomalacia, proven necrotizing enterocolitis, and severe retinopathy of prematurity were 16.0% (4 342/27 192), 11.9% (3 225/27 192), 6.8% (1 641/24 206), 3.6% (939/25 762) and 1.5% (214/13 868), respectively. There was a decreasing of the overall mortality (P<0.001) during the 3 years. Also, the incidences for sepsis and severe retinopathy of prematurity both decreased (both P<0.001). However, there were no significant differences in the major morbidity in preterm infants who received complete care during the 3-year study period (P=0.230). After adjusting for confounders, infants admitted during the third study year showed significantly lower risk of overall mortality (adjust OR=0.62, 95%CI 0.55-0.69, P<0.001), mortality or major morbidity, moderate to severe bronchopulmonary dysplasia, sepsis and severe retinopathy of prematurity, compared to those admitted in the first study year (all P<0.05). Conclusions: From 2015 to 2018, the mortality and major morbidities among preterm infants in Chinese NICU decreased, but there is still space for further efforts. Further targeted quality improvement is needed to improve the overall outcome of preterm infants.
Bronchopulmonary Dysplasia/epidemiology* ; Gestational Age ; Humans ; Infant ; Infant Mortality/trends* ; Infant, Newborn ; Infant, Premature ; Infant, Premature, Diseases/epidemiology* ; Patient Discharge ; Retinopathy of Prematurity/epidemiology* ; Sepsis/epidemiology*

To compare different illness severity scores in predicting mortality risk of extremely low birth weight infants (ELBWI). From January 1st, 2019 to January 1st, 2020, all ELBWI admitted in the Children's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital and the First Affiliated Hospital of Nanjing Medical University were included in the study. ELBWI with admission age ≥1 h, gestational age ≥37 weeks and incomplete data required for scoring were excluded. The clinical data were collected, neonatal critical illness score (NCIS), score for neonatal acute physiology version Ⅱ (SNAP-Ⅱ), simplified version of the score for neonatal acute physiology perinatal extension (SNAPPE-Ⅱ), clinical risk index for babies (CRIB) and CRIB-Ⅱ were calculated. The scores of the fatal group and the survival group were compared, and the receiver operating characteristic (ROC) curve was used to evaluate the predictive value of the above illness severity scores for the mortality risk of ELBWI. Pearson correlation analysis was used to analyze the correlation between illness scores and birth weight, illness scores and gestational age. A total of 192 ELBWI were finally included, of whom 114 cases survived (survival group) and 78 cases died (fatal group). There were significant differences in birth weight, gestational age and Apgar scores between fatal group and survival group (all <0.01). There were significant differences in NCIS, SNAP-Ⅱ, SNAPPE-Ⅱ, CRIB and CRIB-Ⅱ between fatal group and survival group (all <0.01). The CRIB had a relatively higher predictive value for the mortality risk. Its area under the ROC curve (AUC) was 0.787, the sensitivity was 0.678, the specificity was 0.804, and the Youden index was 0.482. The scores of NCIS, SNAP-Ⅱ, SNAPPE-Ⅱ, CRIB and CRIB-Ⅱ were significantly correlated with birth weight and gestational age (all <0.05). The correlation coefficients of CRIB-Ⅱ and CRIB with birth weight and gestational age were relatively large, and the correlations coefficients of NCIS with birth weight and gestational age were the smallest (0.191 and 0.244, respectively). Among these five illness severity scores, CRIB has better predictive value for the mortality risk in ELBWI. NCIS, which is widely used in China, has relatively lower sensitivity and specificity, and needs to be further revised.
Birth Weight ; Gestational Age ; Humans ; Infant ; Infant, Extremely Low Birth Weight ; Infant, Newborn ; Infant, Newborn, Diseases/mortality* ; Predictive Value of Tests ; Risk Assessment/methods* ; Severity of Illness Index

Enteroviral infections are common in neonates. One important infection pathway is vertical transmission from an infected mother to her neonate. Here, we report the early detection and successful treatment of a vertically transmitted fulminant enteroviral infection associated with myocarditis and hepatitis. The patient had a sudden onset of high fever on the fourth day of life and developed severe, rapidly progressing symptoms of disseminated intravascular coagulopathy (DIC), hepatitis, and myocarditis accompanied by tachyarrhythmia. As it was the peak season for enteroviral infections and both the mother and the patient's 36-month-old sibling had a high fever around the time of delivery, we suspected an enteroviral infection. Thus, we initiated prompt evaluation of enteroviral infection, as well as close observation and intensive care of the neonate. We strongly recommend evaluation for the possibility of vertical enterovirus infection in neonates when the mother is suspected of having a viral infection (e.g., high fever and negative results from bacterial infectious studies) around the time of delivery and when the neonate shows some early symptoms of infectious diseases such as thrombocytopenia, DIC, hepatitis, and myocarditis. Early detection of enteroviral infections and prompt implementation of proper treatment are key to reduce the risk of complications and mortality associated with enteroviral infections in neonates.
Arrhythmias, Cardiac ; Child, Preschool ; Communicable Diseases ; Critical Care ; Dacarbazine ; Enterovirus ; Enterovirus Infections ; Fever ; Hepatitis ; Humans ; Infant, Newborn ; Mortality ; Mothers ; Myocarditis ; Seasons ; Siblings ; Tachycardia ; Thrombocytopenia

PURPOSE: Recently, the number of late preterm infants are increasing, and they are prone to have many clinical problems. The purpose of this study is to emphasize the importance of perinatal care for the late preterm infants and their mothers. METHODS: Total admitted numbers of late preterm infants were 547 (from 464 mothers) and of term infants were 1,514 (from 1,470 mothers) in NICU, at Chonnam National University Hospital January 2014~December 2015. Maternal and neonatal mortality rate were calculated in the total admitted numbers. Exclusion criteria were death or transfer during admission, congenital anomaly, and etc. The enrolled numbers of late preterm infants were 493 (from 418 mothers) and of term infants were 1,167 (from 1,123 mothers). Retrospective chart review was conducted. In mothers, demographics, underlying illness, and obstetric complication, and in newborns, demographics, hospital days and morbidity were compared between late preterm group and term group. RESULTS: Maternal mortality rate was not different. However, neonatal mortality rate was higher in late preterm infants. In mothers of late preterm group, there was no difference in demographic characteristics, but the rates of autoimmune disease and obstetric complication were higher. In infants of late preterm group, body size was smaller, artificial conception and C-section rate were higher, and one and five-minute Apgar scores were lower, and hospital duration was longer. And the incidence of respiratory distress, transient tachypena of newborn, intraventricular hemorrhage and metabolic abnormalities were higher, but the incidence of meconium aspiration syndrome was lower compare to the term infant group. CONCLUSIONS: Maternal mortality was not different. However, neonatal mortality was higher in late preterm infants. In late preterm group, the mothers had higher rate of autoimmune disease and obstetric complication, and the infants had higher morbidity compare to the term group. When the obstetrician decides on delivery time in high risk pregnancy, maternal medical condition and neonatal outcome should be considered.
Autoimmune Diseases ; Body Size ; Demography ; Fertilization ; Hemorrhage ; Humans ; Incidence ; Infant ; Infant Mortality ; Infant, Newborn ; Infant, Premature ; Jeollanam-do ; Maternal Mortality ; Meconium Aspiration Syndrome ; Mortality ; Mothers ; Perinatal Care ; Pregnancy, High-Risk ; Premature Birth ; Retrospective Studies

OBJECTIVETo study the treatment and prognosis of pulmonary hemorrhage in preterm infants.

METHODSA total of 106 preterm infants diagnosed with pulmonary hemorrhage, who were hospitalized in the neonatal ward of Peking University Third Hospital between 2007 and 2016, were enrolled. These patients were divided into 2007-2011 group (34 cases) and 2012-2016 group (72 cases) according to the time of hospitalization, divided into conventional-frequency ventilation group (43 cases) and high-frequency oscillatory ventilation (HFOV) group (63 cases) according to the respiratory support method used after the development of pulmonary hemorrhage, and divided into non-operation group (34 cases) and operation group (14 cases) according to whether PDA ligation was performed for the unclosed PDA before pulmonary hemorrhage. The general data, treatment, and prognosis were compared between different groups.

RESULTSCompared with the 2007-2011 group, the 2012-2016 group had higher rates of HFOV and PDA ligation (P<0.05), a lower mortality rate during hospitalization (P<0.05), a longer length of hospital stay (P<0.05), and higher incidence rates of intracranial hemorrhage and bronchopulmonary dysplasia (P<0.05). Compared with the conventional-frequency ventilation group, the HFOV group had a lower mortality rate during hospitalization (P<0.05), a longer length of hospital stay (P<0.05), and higher incidence rates of intracranial hemorrhage and bronchopulmonary dysplasia (P<0.05). Compared with the non-operation group, the operation group had a lower mortality rate during hospitalization (P<0.05), a longer length of hospital stay (P<0.05), and higher incidence rates of intracranial hemorrhage and bronchopulmonary dysplasia (P<0.05).

CONCLUSIONSThe application of HFOV and PDA ligation can improve the survival rate of preterm infants with pulmonary hemorrhage, but the incidence of intracranial hemorrhage and bronchopulmonary dysplasia is also increased.

Bronchopulmonary Dysplasia ; epidemiology ; Cerebral Hemorrhage ; epidemiology ; Ductus Arteriosus, Patent ; surgery ; Hemorrhage ; mortality ; therapy ; High-Frequency Ventilation ; Humans ; Infant, Newborn ; Infant, Premature ; Length of Stay ; Ligation ; Lung Diseases ; mortality ; therapy ; Prognosis ; Time Factors

Bronchopulmonary dysplasia (BPD) is the most common morbidity of prematurity. BPD is a chronic respiratory disease related to lung-injury during the primary course of critical lung disease such as respiratory distress syndrome or when abnormal development of the preterm lung occurs. Abnormal lung development not only results from primary lung injury in the first days after birth, but also secondary injury through abnormal repair resulting in arrested and abnormal alveolarization, fibrosis and pulmonary vascular dysgenesis. Chorioamnionitis is a risk factor that plays an important role in the development of BPD. Ureaplasma subspecies (spp.) are the most common isolated organisms from chorioamniotic tissue after premature births. Therefore Ureaplasma spp. appear to play an important role in the development of BPD, and treatment or prophylactic treatment of these infections or colonization may reduce the incidence, morbidity and mortality of BPD. Ureaplasma spp. infections are challenging not only to treat, but also to diagnosis in a timely manner. This review summarizes the current state of treatment and new developments in the treatment of Ureaplasma exposure in premature infants.
Azithromycin ; Bronchopulmonary Dysplasia* ; Chorioamnionitis ; Colon ; Diagnosis ; Female ; Fibrosis ; Humans ; Incidence ; Infant, Newborn ; Infant, Premature ; Lung ; Lung Diseases ; Lung Injury ; Mortality ; Parturition ; Pregnancy ; Premature Birth ; Risk Factors ; Ultrasonography ; Ureaplasma*

Particulate matter (PM) is known to have serious health effects in individuals with respiratory or cardiovascular disease. Recent studies have shown that they also have noxious effects on cerebrovascular, metabolic, and neuropsychiatric disorders, as well as pregnancy. The aim of this study is to review the various diseases associated with PM in each human organ. Regarding respiratory diseases, PM has been associated with increased acute exacerbation in patients with chronic obstructive pulmonary disease, bronchial asthma, and several other respiratory diseases, resulting in increased hospitalization and mortality. In addition, PM increases the risk of lung cancer and accelerates the decline of lung function. Individuals with cardiovascular conditions such as ischemic heart disease, heart failure, hypertension, arrhythmia, and atherosclerosis have been also found to exhibit increased morbidity and mortality when exposed to PM. PM also has been reported to cause insulin resistance and to induce increasing rates of diabetes. During pregnancy, prolonged exposure to PM has been associated with increased rates of low birth weight and preterm birth. In individuals with neurological diseases, exposure to PM reduces cognitive ability and memory, and increases stroke incidence. It has been reported that PM also exacerbates psychiatric conditions, particularly depression and anxiety disorder. Thus, PM has been shown to exert very noxious health effects on the human body, with impacts including effects on respiratory and cerebrovascular diseases, cardiovascular diseases, neuropsychiatric diseases, and low birth weight.
Anxiety Disorders ; Arrhythmias, Cardiac ; Asthma ; Atherosclerosis ; Cardiovascular Diseases ; Cerebrovascular Disorders ; Depression ; Female ; Heart Failure ; Hospitalization ; Human Body ; Humans ; Hypertension ; Incidence ; Infant, Low Birth Weight ; Infant, Newborn ; Insulin Resistance ; Lung ; Lung Diseases ; Lung Neoplasms ; Memory ; Mortality ; Myocardial Ischemia ; Particulate Matter* ; Pregnancy ; Pregnancy, Prolonged ; Premature Birth ; Pulmonary Disease, Chronic Obstructive ; Stroke

Arrhythmias in the neonatal period are not uncommon, and may occur in neonates with a normal heart or in those with structural heart disease. Neonatal arrhythmias are classified as either benign or nonbenign. Benign arrhythmias include sinus arrhythmia, premature atrial contraction, premature ventricular contraction, and junctional rhythm; these arrhythmias have no clinical significance and do not need therapy. Supraventricular tachycardia, ventricular tachycardia, atrioventricular conduction abnormalities, and genetic arrhythmia such as congenital long-QT syndrome are classified as nonbenign arrhythmias. Although most neonatal arrhythmias are asymptomatic and rarely life-threatening, the prognosis depends on the early recognition and proper management of the condition in some serious cases. Precise diagnosis with risk stratification of patients with nonbenign neonatal arrhythmia is needed to reduce morbidity and mortality. In this article, I review the current understanding of the common clinical presentation, etiology, natural history, and management of neonatal arrhythmias in the absence of an underlying congenital heart disease.
Arrhythmia, Sinus ; Arrhythmias, Cardiac* ; Atrial Premature Complexes ; Diagnosis* ; Heart ; Heart Defects, Congenital ; Heart Diseases ; Humans ; Infant, Newborn ; Mortality ; Natural History ; Prognosis ; Tachycardia, Supraventricular ; Tachycardia, Ventricular ; Ventricular Premature Complexes

Hepatitis A virus is one of the most frequent causes of foodborne infection, which is closely associated with sanitary conditions and hygienic practices. The clinical spectrum of acute hepatitis A is wide, ranging from mild case without any noticeable symptoms to severe case with acute liver failure leading to mortality. The severity and outcome are highly correlated with age at infection. In developing countries, most people are infected in early childhood without significant symptom. Ironically, in area where sanitary condition has improved rapidly, adults who do not have immunity for viral hepatitis A (VH-A) in early childhood is accumulating. Adults without immunity are exposed to risks of symptomatic disease and large outbreaks in society. In Korea, where hygiene has improved rapidly, acute hepatitis A is a significant health burden that needs to be managed with nationwide health policy. The incidence of symptomatic VH-A has increased since 2000 and peaked in 2009. Korea has designated hepatitis A as a group 1 nationally notifiable infectious disease in 2001. Since 2001, mandatory surveillance system has been established to detect every single case of acute hepatitis A. Universal, nationwide vaccination program for newborns was introduced in 2015. In this review, we will present the current epidemiologic status of viral hepatitis A, and evaluate the effectiveness of the current nationwide strategies for the control of viral hepatitis A in Korea. Furthermore, we presented some action proposals that can help eliminate viral hepatitis A, which is a significant health burden in Korea.
Adult ; Communicable Diseases ; Developing Countries ; Disease Outbreaks ; Health Policy ; Hepatitis A virus ; Hepatitis A* ; Hepatitis* ; Humans ; Hygiene ; Incidence ; Infant, Newborn ; Iron ; Korea* ; Liver Failure, Acute ; Mortality ; Vaccination

BACKGROUND: Patent ductus arteriosus (PDA) ligation is usually performed by congenital cardiac surgeons. However, due to the uneven distribution of congenital cardiac surgeons in South Korea, many institutions depend solely on adult cardiac surgeons for congenital cardiac diseases. We report the outcomes of PDA ligations performed by adult cardiac surgeons at our institution. METHODS: The electronic medical records of 852 neonates at Chung-Ang University Hospital, Seoul, South Korea from November 2010 to May 2014 were reviewed to identify patients with PDA. RESULTS: Of the 111 neonates with a diagnosis of PDA, 26 (23%) underwent PDA ligation. PDAs were ligated within 28 days of birth (mean, 14.5±7.8 days), and the mean gestational age of these patients was 30.3±4.6 weeks (range, 26 to 40 weeks) with a mean birth weight of 1,292.5±703.5 g (range, 480 to 3,020 g). No residual shunts through the PDA were found on postoperative echocardiography. There was 1 case of 30-day mortality (3.8%) due to pneumonia, and 6 cases of in-hospital mortality (23.1%) after 30 days, which is comparable to results from other centers with congenital cardiac surgery programs. CONCLUSION: Although our outcomes may not be generalizable to all hospital settings without a congenital cardiac surgery program, in select centers, PDA ligations can be performed safely by adult cardiac surgeons if no congenital cardiac surgery program is available.
Adult* ; Birth Weight ; Cardiac Surgical Procedures ; Diagnosis ; Ductus Arteriosus, Patent* ; Echocardiography ; Electronic Health Records ; Gestational Age ; Heart Defects, Congenital ; Heart Diseases ; Hospital Mortality ; Humans ; Infant, Newborn ; Korea ; Ligation* ; Mortality ; Parturition ; Pneumonia ; Seoul ; Surgeons* ; Thoracic Surgery