Factor In Respiratory Distress Syndrome Research Articles

Prevalence and attributable risk factors of respiratory distress syndrome among neonates confined at Cagayan Valley Medical Center: A retrospective study

Prevalence and attributable risk factors of respiratory distress syndrome among neonates confined at Cagayan Valley Medical Center: A retrospective study

Clinical outcome and associated factors of respiratory distress syndrome among preterm neonates admitted to the neonatal intensive care unit of Adama Hospital and Medical College.

Aim of the study was to assess the clinical outcome and associated factors of respiratory distress syndrome among preterm neonates admitted to the neonatal intensive care unit of Adama Hospital and Medical College. Hospital-based cross-sectional study was conducted using 242 randomly selected medical records of preterm neonates admitted to Adama comprehensive specialized hospital. Clinical outcome was categorized as poor if the neonate died or left against advice and good if discharged after improvement. Data were coded, entered into Epidata v.7.4.2 and exported to SPSS v.27 for analysis. After initial bi-variable logistic regression analysis, predictor variables with p-value of <0.2 were included in multivariable analysis. Significant association of factors with clinical outcome was claimed at p-value <0.05 and calculated 95% adjusted odds ratio. Majority of admissions were male (63.2%), mean birth weight of 1440.3 g (+321.2 SD) and sepsis (82%), hypothermia (73%), and apnea (21.5%) were leading comorbidities. One hundred fifty-two (62.8%) of preterm neonates had poor outcomes. Neonates born singleton were 47% less likely to develop poor clinical outcomes (adjusted odds ratio 0.53 (0.48-0.94). The odds of poor clinical outcomes were higher during the first 3 days of admission (adjusted odds ratio 3.83 (3.28-14.77). Extremely preterm neonates (adjusted odds ratio 4.16 (4.01-12.97), extremely low birth weight preterm neonates had higher odds of poor clinical outcome. The study found higher poor clinical outcome among preterm neonates admitted with respiratory distress syndrome. Poor outcome was higher in lower gestational age, lower birth weight, twins and majority of it happened during 3 days of their life. Effective preventive care and initiation of low-cost, life-saving interventions including heated humidified high-flow nasal cannula and surfactant administration could significantly improve the clinical outcome of the neonates.

Efficacy analysis of different pulmonary surfactants in premature infants with respiratory distress syndrome

To explore high-risk factors of respiratory distress syndrome (RDS) and to compare the clinical efficacy of calf pulmonary surfactant (PS) combined with budesonide suspension and poractant alfa injection in the treatment of RDS in premature infants. A retrospective analysis was conducted. Preterm infants who were born in the obstetrics department of Liaocheng People's Hospital and admitted to the neonatal intensive care unit (NICU) within 24 hours from July 2016 to July 2020 were enrolled. The clinical data of these patients including perinatal conditions, clinical features, therapeutic regimens of PS and outcomes were collected and analyzed. According to the diagnostic criteria of neonatal respiratory distress syndrome (NRDS), premature infants were divided into NRDS group and non-NRDS group. First, the clinical data of the two groups were compared to analyze the related factors of NRDS. Then the related factors of NRDS were confirmed by Logistic regression analysis. In addition, according to the trapeutic regimens of PS, the children were divided into calf PS combined with budesonide suspension group and poractant alfa injection group, and the efficacy of the two PS was compared. (1) A total of 1 690 preterm infants were included, including 297 preterm infants were diagnosed with NRDS which accounted for 17.6% of live preterm infants. There were significant differences in gender, gestational age (GA), birth parity, birth weight (BW), asphyxia of newborn, caesarean section, premature rupture of membrane, placental abruption, gestational diabetes and father's smoking addiction (maternal exposure to smoke during pregnancy) between NRDS group and non-NRDS group (male: 71.0% vs. 59.0%; GA: < 28 weeks was 4.1% vs. 0.1%, 28 weeks ≤ GA < 34 weeks was 70.0% vs. 29.9%, 34 weeks ≤ GA < 37 weeks was 25.9% vs.70.0%; birth parity: 2 (1, 3) vs. 2 (1, 3); BW: < 1 000 g was 4.1% vs. 0.4%, 1 000 g ≤ BW < 1 500 g was 31.3% vs. 6.5%, 1 500 g ≤ BW < 2 500 g was 51.5% vs. 58.9%, 2 500 g ≤ BW < 4 000 g was 12.8% vs. 33.1%, BW ≥ 4 000 g was 0.3% vs. 1.1%; asphyxia of newborn: 50.8% vs. 14.6%; caesarean section: 71.7% vs. 65.0%; premature rupture of membrane: 66.7% vs. 42.2%; premature rupture of fetal membranes: 11.4% vs. 5.2%; gestational diabetes: 12.1% vs. 7.0%; father's smoking addiction: 80.8% vs. 71.5%, all P < 0.05), but there was no significant difference in prenatal use of dexamethasone (DEX) between NRDS group and non-NRDS group (80.1% vs. 84.1%, P > 0.05). Binary multivariate Logistic regression analysis showed that GA, gender, cesarean section, premature rupture of membranes, gestational diabetes, father's smoking addiction and neonatal asphyxia were the risk factors of RDS [odds ratio (OR) and 95% confidence interval (95%CI) were 0.621 (0.557-0.693), 2.043 (1.478-2.825), 1.365 (1.036-1.797), 0.697 (0.506-0.961), 3.223 (1.906-5.449), 1.836 (1.261-2.673), 3.596 (2.622-4.933), all P < 0.05]. (2) A total of 160 patients diagnosed with grade III/IV NRDS were included to analyze the efficacy of PS. Among them, 42 cases were treated with calf PS combined with budesonide suspension, and 118 cases were treated with poractant alfa injection. Compared with the poractant alfa injection group, the total oxygen consumption time of the calf PS group was shorter [days: 9.0 (5.0, 19.0) vs. 13.0 (6.0, 26.0)], the hospitalization expenses were lower [ten thousand Yuan: 3.46 (2.88, 5.18) vs. 4.58 (3.08, 6.06)], and the incidence of bronchopulmonary dysplasia (BPD) was lower (11.9% vs. 28.8%), with statistically significant differences (all P < 0.05). In addition to GA, gender, cesarean section, premature rupture of membranes, gestational diabetes, and neonatal asphyxia, the father's smoking addiction (maternal smoke exposure during pregnancy) is an important risk factor of RDS in premature infants. The efficacy of prenatal use of DEX for prevention of RDS in preterm infants is affected by many factors, such as prenatal smoke exposure, timing of use, multiple fetuses, etc. Calf PS combined with budesonide suspension is better than poractant alfa injection in reducing the incidence of BPD.

Cesarean Delivery and Respiratory Distress Syndrome in Late Preterm Infants

Cesarean sections (C-sections) associated with an increased risk of atopic disorders in infants. Late preterm infants born by C-sections tend to have more breathing problems especially Respiratory distress syndrome (RDS). RDS is one of the most common causes of respiratory morbidity and mortality in late preterm infants. Respiratory Distress Syndrome is one of the main causes of respiratory failure and neonatal death in premature infants and is caused by a lack of pulmonary surfactant due to fetal lung immaturity. The objectives of this research are to analyze the relationship between cesarean delivery and respiratory distress syndrome in late preterm infants. This type of research uses a type of quantitative research. The study design is a retrospective cohort study with a study cross-sectional approach. The sample in this study were 155 late preterm infants. This research was conducted in January-April 2019 in the Prof. DR. Margono Soekarjo Purwokerto. The analysis used univariate and bivariate analysis using The Chi-square test. The results of this study showed there is a significant relationship between C-sections and respiratory distress syndrome from p-value of 0.013 (&gt; 0.05). Based on the results of this study, nurses are expected to recognize that C-sections delivery one of the risk factors of RDS in late preterm infants.

Study on risk factors of respiratory distress syndrome in term neonates: a retrospective case-control study

Background: Respiratory distress syndrome (RDS) is one of the most common causes of neonatal respiratory failure and neonatal death. It is more common in preterm neonates but also been found in term and late preterm neonates. This study aims at studying the risk factors for developing RDS in term neonates. Objectives was to study the maternal and perinatal risk factors for RDS in term neonates.Methods: This is a retrospective case control study conducted in neonatal intensive care unit of tertiary care centre. A total of 100 term neonates with RDS were taken as cases and 150 normal term neonates were taken as control. Data were collected from the hospital NICU records, maternal and neonatal history was taken. The χ2 tests or Fisher’s exact text were used for one-way risk factor analysis. The effects of multiple factors on term neonatal RDS were analyzed using logistic regression analysis.Results: In our study RDS in term neonates was significantly associated with following risk factors like selective cesarean section, male sex, SGA, oligohydramnios, MSAF, severe fetal distress, birth asphyxia, PROM, and maternal-fetal infection. Among the significant risk factors severe birth asphyxia, maternal-fetal infection, PROM, MSAF were showing positive association with RDS in full-term neonates.Conclusions: Several high-risk factors such as severe birth asphyxia, maternal-fetal infection, PROM, and MSAF were closely correlated with full-term neonatal RDS. Hence these could provide a significant reference for the diagnosis and treatment of term neonatal RDS.

Pbx1 activates Fgf10 in the mesenchyme of developing lungs

Insufficiency of surfactants is a core factor in respiratory distress syndrome, which causes apnea and neonatal death, particularly in preterm infants. Surfactant proteins are secreted by alveolar type II cells in the lung epithelium, the differentiation of which is regulated by Fgf10 elaborated by the adjacent mesenchyme. However, the molecular regulation of mesenchymal Fgf10 during lung development has not been fully understood. Here, we show that Pbx1, a homeodomain transcription factor, is required in the lung mesenchyme for the expression of Fgf10. Mouse embryos lacking Pbx1 in the lung mesenchyme show compact terminal saccules and perinatal lethality with failure of postnatal alveolar expansion. Mutant embryos had severely reduced expression of Fgf10 and surfactant genes (Spa, Spb, Spc, and Spd) that are essential for alveolar expansion for gas exchange at birth. Molecularly, Pbx1 directly binds to the Fgf10 promoter and cooperates with Meis and Hox proteins to transcriptionally activate Fgf10. Our results thus show how Pbx1 controls Fgf10 in the developing lung.

High-risk Factors of Respiratory Distress Syndrome in Term Neonates: A Retrospective Case-control Study

Respiratory distress syndrome (RDS) is a common critical disease in term neonates, but reasons for the occurrence of RDS remains unclear. This study aimed to investigate the cause of RDS in full-term neonates by a retrospective case-control study. Case-control study. Among the patients admitted to Bayi Children's Hospital between January 2008 and December 2010, a total of 205 full-term neonates with RDS were assigned to the study group, and 410 full-term neonates without RDS were assigned to the control group. Clinical information, including the presence or absence of premature rupture of membranes (PROM), gender of the neonates, mode of delivery, birth weight, and any conditions suffered by the neonates were recorded. THE RESULTS OF LOGISTIC REGRESSION ANALYSIS SHOWED THAT THE FOLLOWING CAUSES WERE CLOSELY CORRELATED WITH TERM NEONATAL RDS: selective cesarean section (OR: 8.737; 95% CI: 5.232-14.588), severe birth asphyxia (OR: 6.988; 95% CI: 2.990-16.333), small gestational age (OR: 6.222; 95% CI: 2.001-8.993), maternal-fetal infection (OR: 5.337; 95% CI: 1.999-8.233), PROM (OR: 3.380; 95% CI: 1.986-5.754), male sex (OR: 2.641; 95% CI: 1.721-4.053), gestational glucose intolerance or diabetes (OR: 2.415; 95% CI:1.721-4.053), and low birth weight (OR: 2.323; 95% CI: 1.329-4.060). Several high-risk factors, such as selective cesarean section, severe birth asphyxia, maternal-fetal infection, PROM, and male sex are closely correlated with full-term neonatal RDS. These could provide a significant reference for the diagnosis and treatment of term neonatal RDS.

Digoxin for preventing or treating neonatal respiratory distress syndrome

Lendrum 1955 suggested that pulmonary edema secondary to congestive heart failure may contribute to neonatal respiratory distress syndrome (RDS). Based on this hypothesis, investigators began to use digitalis glycosides to improve myocardial contractility and decrease congestive heart failure. The first use of digitalis glycosides in infants with RDS was reported by Stahlman 1959. Stahlman reported a reduction in mortality in an uncontrolled trial of digitalis in infants with RDS. To assess the effect of digoxin on mortality in premature infants at risk for or with RDS. Searches were made of the Oxford Database of Perinatal Trials, Medline (MeSH terms: digoxin; limits: age groups, newborn infants; publication type, clinical trial), previous reviews including cross references, abstracts, conference and symposia proceedings, expert informants, and journal handsearching in the English language.When updated in December 2008, the search was expanded to include Medline, CINHAL, and Embase (MeSH terms and text words: digoxin or digitalis; limits: age group, all infants; publication type: clinical trial). Randomized and quazi-randomized controlled trials of digoxin in either the prevention or treatment of RDS are included in this overview. Data regarding clinical outcomes were excerpted from the trial reports by one review author (RS) and checked by the second review author (EO). Data were analyzed according to the standards of the Cochrane Neonatal Review Group. Two randomized controlled trials have studied the effects of digoxin in the prevention and treatment of RDS. No improvement in respiratory status or mortality was noted. Meta-analysis of the effect of digoxin given to infants at risk of or with RDS on mortality does not suggest any benefit of digoxin treatment (typical relative risk 1.27 95% CI 0.78 to 2.07; typical risk difference 0.06, 95% CI -0.06 to 0.17). Although hemodynamic disturbances play a role in the overall pathogenesis of respiratory distress syndrome, the specific contribution of early congestive heart failure (unrelated to hemodynamically significant patent ductus arteriosus) does not appear to be a significant factor in RDS. Treatment with digoxin has no proven value in infants solely affected with RDS.

Respiratory distress syndrome in twin infants compared with singletons

Objective The purpose of this study was to determine gestational age–specific incidence and risk factors of respiratory distress syndrome (RDS) in twins compared with singletons. Study design An analysis of 850,406 singleton and 23,278 twin infants born alive in Finland between 1987 and 2000 was performed. A number of antenatal and perinatal/intranatal factors were evaluated. Results At less than 28 weeks of gestation, the incidence of RDS was higher in both first- and second-born twins compared with singletons. At more advanced gestation, first-born twins had a significantly lower incidence of RDS compared with the others. There was no difference in the concordance of RDS between same-sex and opposite-sex twin pairs. Vaginal delivery, female sex, being born first, and being the lighter of the twins protected from RDS. Conclusion After taking into account gestation, twins are not at higher risk of RDS compared with singletons except at very early gestation. Environmental factors predominate over genetic ones in the predisposition to RDS in twins.

Fatores de risco para síndrome do desconforto respiratório do recém-nascido na pré-eclâmpsia grave

Abstract Objectives: to identify predictive factors of respiratory distress syndrome (RDS) in severe preeclampsia. Methods: a cross-sectional study was conducted based on the secondary analysis of a clinical trial about the use of corticosteroids to prevent RDS in severe preeclampsia. Newborn. infants with (n=66) and without RDS (n=134) were compared. Results: only fetal distress and very low birth weight were associated with increased risk of RDS, white corticosteroid therapy was significantly protective after multiple regression analysis. Conclusions: when deciding whether to interrup t a pregnancy in cases ofserious preeclampsia the risk of excessive prematurity has to be weighed up against the patient's exposure to fetal distress, and corticosteroid therapy should always be recommended.

Digoxin for preventing or treating neonatal respiratory distress syndrome.

This section is under preparation and will be included in the next issue. To assess the effect of digoxin on clinical outcome in infants at risk of, or with, respiratory distress syndrome (RDS). Searches were made of the Oxford Database of Perinatal Trials, Medline (MeSH terms: digoxin; limits: age groups, newborn infants; publication type, clinical trial), previous reviews including cross references, abstracts, conference and symposia proceedings, expert informants, and journal handsearching in the English language. Randomized controlled trials of digoxin in either the prevention or treatment of respiratory distress syndrome are included in this overview. Data regarding clinical outcomes were excerpted from the trial reports by the reviewer. Data were analyzed according to the standards of the Cochrane Neonatal Review Group. Two randomized controlled trials have studied the effects of digoxin in the prevention and treatment of respiratory distress syndrome. No improvement in respiratory status or mortality was noted. Meta-analysis of the effect of digoxin given to infants at risk of or with RDS on mortality does not suggest any benefit of digoxin treatment (typical relative risk 1.27 95% CI 0.78, 2.07; typical risk difference 0.06, 95% CI -0.06, 0.17). Although hemodynamic disturbances play a role in the overall pathogenesis of respiratory distress syndrome, the specific contribution of early congestive heart failure (unrelated to hemodynamically significant patent ductus arteriosus) does not appear to be a significant factor in RDS. Treatment with digoxin has no proven value in infants solely affected with respiratory distress syndrome.

Chapter 5 Maintenance of Human and Rat Pulmonary Type II Cells in an Organotypic Culture System

Publisher Summary This chapter discusses the maintenance of human and rat pulmonary type II cells in an organotypic culture system. The lungs of mammals and some inframammalian vertebrates contain a potent surface-active material that coats the alveolar surface, decreases the surface tension, and thus stabilizes the alveoli against collapse. The presence of this pulmonary surfactant is essential for normal pulmonary function, and its absence or diminution is an important etiological factor in respiratory distress syndrome. The mammalian pulmonary alveolus is lined with an endodermally derived epithelium consisting of two cell types: type I and type II pulmonary epithelial cells. The human fetal lung at 18–20 weeks of gestation contains epithelial tubules instead of pulmonary alveoli. The tubules are comprised of glycogen-rich epithelial cells containing very few lamellar bodies. The phospholipid composition of surfactant isolated from organotypic cultures is compared to that isolated from adult rat lung. Fatty acid analysis of surfactant phosphatidylcholine from organotypic cultures demonstrates that myristate, palmitate, and stearate are the major fatty acids present.