Reduction of Sleep Apnea and Bradycardia in Preterm Infants on Oscillating Water Beds: A Controlled Polygraphic Study

The sleep and respiratory patterns of eight apneic preterm infants were polygraphically recorded for 24 hours. This polygraphic study was designed to test and extend our previous finding that gently oscillating water beds reduce apnea in premature infants. The infants who ranged in gestational age from 27 to 32 weeks and in birth weight from 1,077 to 1,650 gm served as their own controls, off and on the water bed. The 24-hour recordings were divided into four time blocks with the infant being placed on the water bed during alternate six-hour periods. Apnea was significantly reduced while the infants were on the oscillating water beds, with the longest apneic periods and those associated with severe bradycardia being reduced the most. Reduction of apnea was most consistent during indeterminate sleep and most pronounced during quiet sleep. Short respiratory pauses and periodic breathing were not significantly reduced. Reductions of central, obstructive, and mixed apneas were approximately equal.

Download Full-text

Effects of inhaled oxygen (up to 40%) on periodic breathing and apnea in preterm infants

Journal of Applied Physiology ◽

10.1152/jappl.1992.72.1.116 ◽

1992 ◽

Vol 72 (1) ◽

pp. 116-120 ◽

Cited By ~ 41

Author(s):

Z. Weintraub ◽

R. Alvaro ◽

K. Kwiatkowski ◽

D. Cates ◽

H. Rigatto

Keyword(s):

Birth Weight ◽

Tidal Volume ◽

Preterm Infants ◽

Gestational Age ◽

Minute Ventilation ◽

Periodic Breathing ◽

Respiratory Pattern ◽

Quiet Sleep ◽

Flow Through ◽

Transcutaneous Po2

To discover whether increases in inhaled O2 fraction (FIO2; up to 40%) decrease apnea via an increase in minute ventilation (VE) or a change in respiratory pattern, 15 preterm infants (birth weight 1,300 +/- 354 g, gestational age 29 +/- 2 wk, postnatal age 20 +/- 9 days) breathed 21, 25, 30, 35, and 40% O2 for 10 min in quiet sleep. A nosepiece and a flow-through system were used to measure ventilation. Alveolar PCO2, transcutaneous PO2, and sleep states were also assessed. All infants had periodic breathing with apneas greater than or equal to 3 s. With an increase in FIO2 breathing became more regular and apneas decreased (P less than 0.001). This regularization in breathing was not associated with significant changes in VE. However, the variability of VE, tidal volume, and expiratory and inspiratory times decreased significantly. The results indicate that the more regular breathing observed with small increases in FIO2 was not associated with significant changes in ventilation. The findings suggest that the increased oxygenation decreases apnea and periodicity in preterm infants, not via an increase in ventilation, but through a decrease in breath-to-breath variability of VE.

Download Full-text

The Correlation Between Bronchopulmonary Dysplasia and Platelet Metabolism in Preterm Infants

Frontiers in Pediatrics ◽

10.3389/fped.2021.670469 ◽

2021 ◽

Vol 9 ◽

Author(s):

Longli Yan ◽

Zhuxiao Ren ◽

Jianlan Wang ◽

Xin Xia ◽

Liling Yang ◽

...

Keyword(s):

Platelet Count ◽

Birth Weight ◽

Preterm Infants ◽

Bronchopulmonary Dysplasia ◽

Premature Infants ◽

Gestational Age ◽

Admission Diagnosis ◽

Control Group ◽

The Relationship

Background: Platelets play an important role in the formation of pulmonary blood vessels, and thrombocytopenia is common in patients with pulmonary diseases. However, a few studies have reported on the role of platelets in bronchopulmonary dysplasia.Objective: The objective of the study was to explore the relationship between platelet metabolism and bronchopulmonary dysplasia in premature infants.Methods: A prospective case-control study was performed in a cohort of premature infants (born with a gestational age <32 weeks and a birth weight <1,500 g) from June 1, 2017 to June 1, 2018. Subjects were stratified into two groups according to the diagnostic of bronchopulmonary dysplasia: with bronchopulmonary dysplasia (BPD group) and without bronchopulmonary dysplasia (control group). Platelet count, circulating megakaryocyte count (MK), platelet-activating markers (CD62P and CD63), and thrombopoietin (TPO) were recorded and compared in two groups 28 days after birth; then serial thrombopoietin levels and concomitant platelet counts were measured in infants with BPD.Results: A total of 252 premature infants were included in this study. Forty-eight premature infants developed BPD, 48 premature infants without BPD in the control group who were matched against the study infants for gestational age, birth weight, and admission diagnosis at the age of postnatal day 28. Compared with the controls, infants with BPD had significantly lower peripheral platelet count [BPD vs. controls: 180.3 (24.2) × 109/L vs. 345.6 (28.5) × 109/L, p = 0.001]. Circulating MK count in the BPD group was significantly more abundant than that in the control group [BPD vs. controls: 30.7 (4.5)/ml vs. 13.3 (2.6)/ml, p = 0.025]. The level of CD62p, CD63, and TPO in BPD group was significantly higher than the control group [29.7 (3.1%) vs. 14.5 (2.5%), 15.4 (2.0%) vs. 5.8 (1.7%), 301.4 (25.9) pg/ml vs. 120.4 (14.2) pg/ml, all p < 0.05]. Furthermore, the concentration of TPO was negatively correlated with platelet count in BPD group with thrombocytopenia.Conclusions: Our findings suggest that platelet metabolism is involved in the development of BPD in preterm infants. The possible mechanism might be through increased platelet activation and promoted TPO production by feedback.

Download Full-text

Epidemiology, Prevalence, and Incidence in Retinopathy of Prematurity

Güncel Retina Dergisi (Current Retina Journal) ◽

10.37783/crj-0059 ◽

2018 ◽

pp. 2-4

Keyword(s):

Birth Weight ◽

Preterm Infants ◽

Premature Infants ◽

Gestational Age ◽

Retinopathy Of Prematurity ◽

Retinal Vasculature ◽

Frequency Data

Retinopathy of prematurity (ROP) is a disease that occurs in premature infants with retinal vasculature with an incomplete immature retina structure. ROP affects a substantial number of preterm infants worldwide. Both the incidence and severity increase with decreasing gestational age (GA) and birth weight (BW). In this review, epidemiological history and frequency data of the disease have been summarized after evaluating studies conducted in our country and abroad.

Download Full-text

Prevalence of patent ductus arteriosus in premature infants at the Neonatal Ward, Cipto Mangunkusumo Hospital, Jakarta

Paediatrica Indonesiana ◽

10.14238/pi44.6.2004.223-7 ◽

2016 ◽

Vol 44 (6) ◽

pp. 223 ◽

Cited By ~ 2

Author(s):

Benita Deselina ◽

Sukman Tulus Putra ◽

Rulina Suradi

Keyword(s):

Birth Weight ◽

Incidence Rate ◽

Preterm Infants ◽

Premature Infants ◽

Gestational Age ◽

Heart Diseases ◽

Ductus Arteriosus ◽

Chronological Age ◽

Neonatal Ward ◽

Patent Ductus

Background Patent ductus arterious (PDA) is one of the mostcommon congenital heart diseases encountered in preterm infants.The lower the birth weight and gestational age are, the higher theincidence of PDA is.Objectives To investigate the incidence of PDA in premature infantshospitalized in the neonatal wards of Cipto Mangunkusumo Hospitalusing echocardiography.Methods Preterm infants born between August and October 2003were included in this study. Clinical features were retrieved from medicalcharts. The first echocardiography was conducted on all of the preterminfants at the chronological age of 3 days. If PDA was detected,echocardiography was repeated at the chronological age of 6 days.Results During the 3-month period, sixty-five preterm infantsparticipated in this study and underwent echocardiography. In thefirst echocardiogram, the incidence rate of PDA was 32%. Atgestational age of less than 28 weeks, 1 of 2 infants had PDA. Of 3infants with birth weight of more than 1000 grams, 2 had PDA. Onthe second echocardiography, the incidence rate of PDA was 14%and mostly found in infants at gestational age of less than 28 weeks(8/9) and in those with birth weight of less than 1000 grams (7/9).All infants with RDS whose PDA was identified in the firstechocardiography proved to maintain their PDA in the secondechocardiography.Conclusion The incidence rate of PDA in preterm infants was14%. The lower the birth weight, the higher the incidence rate ofPDA. The presence of RDS is related to the delay in the closing ofthe arterial duct

Download Full-text

A birth population-based survey of preterm morbidity and mortality by gestational age

BMC Pregnancy and Childbirth ◽

10.1186/s12884-021-03726-4 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Xiaojing Guo ◽

Xiaoqiong Li ◽

Tingting Qi ◽

Zhaojun Pan ◽

Xiaoqin Zhu ◽

...

Keyword(s):

Birth Weight ◽

Preterm Birth ◽

Preterm Infants ◽

Birth Defects ◽

Gestational Age ◽

Death Rate ◽

Preterm Births ◽

Mortality Rates ◽

Morbidity And Mortality ◽

Hospital Death

Abstract Background Despite 15–17 millions of annual births in China, there is a paucity of information on prevalence and outcome of preterm birth. We characterized the outcome of preterm births and hospitalized preterm infants by gestational age (GA) in Huai’an in 2015, an emerging prefectural region of China. Methods Of 59,245 regional total births, clinical data on 2651 preterm births and 1941 hospitalized preterm neonates were extracted from Huai’an Women and Children’s Hospital (HWCH) and non-HWCH hospitals in 2018–2020. Preterm prevalence, morbidity and mortality rates were characterized and compared by hospital categories and GA spectra. Death risks of preterm births and hospitalized preterm infants in the whole region were analyzed with multivariable Poisson regression. Results The prevalence of extreme, very, moderate, late and total preterm of the regional total births were 0.14, 0.53, 0.72, 3.08 and 4.47%, with GA-specific neonatal mortality rates being 44.4, 15.8, 3.7, 1.5 and 4.3%, respectively. There were 1025 (52.8% of whole region) preterm admissions in HWCH, with significantly lower in-hospital death rate of inborn (33 of 802, 4.1%) than out-born (23 of 223, 10.3%) infants. Compared to non-HWCH, three-fold more neonates in HWCH were under critical care with higher death rate, including most extremely preterm infants. Significantly all-death risks were found for the total preterm births in birth weight < 1000 g, GA < 32 weeks, amniotic fluid contamination, Apgar-5 min < 7, and birth defects. For the hospitalized preterm infants, significantly in-hospital death risks were found in out-born of HWCH, GA < 32 weeks, birth weight < 1000 g, Apgar-5 min < 7, birth defects, respiratory distress syndrome, necrotizing enterocolitis and ventilation, whereas born in HWCH, antenatal glucocorticoids, cesarean delivery and surfactant use decreased the death risks. Conclusions The integrated data revealed the prevalence, GA-specific morbidity and mortality rate of total preterm births and their hospitalization, demonstrating the efficiency of leading referral center and whole regional perinatal-neonatal network in China. The concept and protocol should be validated in further studies for prevention of preterm birth.

Download Full-text

Single-course antenatal corticosteroids is related to faster growth in very-low-birth-weight infant

BMC Pregnancy and Childbirth ◽

10.1186/s12884-020-03510-w ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Jiajia Jing ◽

Yiheng Dai ◽

Yanqi Li ◽

Ping Zhou ◽

Xiaodong Li ◽

...

Keyword(s):

Birth Weight ◽

Low Birth Weight ◽

Preterm Infants ◽

Gestational Age ◽

Very Low Birth Weight ◽

Postnatal Growth ◽

Weight Increase ◽

Antenatal Corticosteroids ◽

Lung Maturation ◽

Growth Outcomes

Abstract Background Antenatal corticosteroids (ACS) treatment is critical to support survival and lung maturation in preterm infants, however, its effect on feeding and growth is unclear. Prior preterm delivery, it remains uncertain whether ACS treatment should be continued if possible (repeated course ACS), until a certain gestational age is reached. We hypothesized that the association of single-course ACS with feeding competence and postnatal growth outcomes might be different from that of repeated course ACS in very-low-birth-weight preterm infants. Methods A multicenter retrospective cohort study was conducted in very-low-birth-weight preterm infants born at 23–37 weeks’ gestation in South China from 2011 to 2014. Data on growth, nutritional and clinical outcomes were collected. Repeated course ACS was defined in this study as two or more courses ACS (more than single-course). Infants were stratified by gestational age (GA), including GA < 28 weeks, 28 weeks ≤ GA < 32 weeks and 32 weeks ≤ GA < 37 weeks. Multiple linear regression and multilevel model were applied to analyze the association of ACS with feeding and growth outcomes. Results A total of 841 infants were recruited. The results, just in very-low-birth-weight preterm infants born at 28–32 weeks’ gestation, showed both single and repeated course of ACS regimens had shorter intubated ventilation time compared to non-ACS regimen. Single-course ACS promoted the earlier application of amino acid and enteral nutrition, and higher rate of weight increase (15.71; 95%CI 5.54–25.88) than non-ACS after adjusting for potential confounding factors. No associations of repeated course ACS with feeding, mean weight and weight increase rate were observed. Conclusions Single-course ACS was positively related to feeding and growth outcomes in very-low-birth-weight preterm infants born at 28–32 weeks’ gestation. However, the similar phenomenon was not observed in the repeated course of ACS regimen.

Download Full-text

Impact of size at birth and postnatal growth on metabolic and neurocognitive outcomes in prematurely born school-age children

Scientific Reports ◽

10.1038/s41598-021-86292-1 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Yoo Jinie Kim ◽

Seung Han Shin ◽

Eun Sun Lee ◽

Young Hwa Jung ◽

Young Ah Lee ◽

...

Keyword(s):

Birth Weight ◽

Preterm Infants ◽

Gestational Age ◽

Growth Velocity ◽

Postnatal Growth ◽

School Age ◽

Z Score ◽

Neurodevelopmental Outcomes ◽

Neurocognitive Outcomes ◽

Size At Birth

AbstractPrematurity, size at birth, and postnatal growth are important factors that determine cardiometabolic and neurodevelopmental outcomes later in life. In the present study, we aimed to investigate the associations between the size at birth and growth velocity after birth with cardiometabolic and neurodevelopmental outcomes in preterm infants. Fifty-six preterm infants born at < 32 weeks of gestation or having a birth weight of < 1500 g were enrolled and categorized into small for gestational age (SGA) and appropriate for gestational age (AGA) groups. Anthropometric and cardiometabolic parameters were assessed at school-age, and the Korean Wechsler Intelligence Scale for Children, fourth edition (K-WISC-IV) was used for assessing the intellectual abilities. The growth velocity was calculated by changes in the weight z-score at each time period. Multivariate analysis was conducted to investigate the associations of growth velocity at different periods with cardiometabolic and neurodevelopmental outcomes. Forty-two (75%) were classified as AGA and 25% as SGA. At school-age, despite the SGA children showing significantly lower body weight, lean mass index, and body mass index, there were no differences in the cardiometabolic parameters between SGA and AGA groups. After adjusting for gestational age, birth weight z-score, weight z-score change from birth to discharge and sex, change in weight z-score beyond 12 months were associated with a higher systolic blood pressure, waist circumference, and insulin resistance. Full-scale intelligent quotient (β = 0.314, p = 0.036) and perceptional reasoning index (β = 0.456, p = 0.003) of K-WISC-IV were positively correlated with postnatal weight gain in the neonatal intensive care unit. Although cardiometabolic outcomes were comparable in preterm SGA and AGA infants, the growth velocity at different time periods resulted in different cardiometabolic and neurocognitive outcomes. Thus, ensuring an optimal growth velocity at early neonatal period could promote good neurocognitive outcomes, while adequate growth after 1 year could prevent adverse cardiometabolic outcomes in preterm infants.

Download Full-text

ANALYSIS OF THE DIFFERENCES BETWEEN THE PRESCRIBED AND THE ADMINISTERED DIET TO PRETERM INFANTS USING AN ELECTRONIC TOO

Revista Paulista de Pediatria ◽

10.1590/1984-0462/;2019;37;4;00008 ◽

2019 ◽

Vol 37 (4) ◽

pp. 472-478 ◽

Cited By ~ 1

Author(s):

Olivia Araújo Zin ◽

Fernanda Valente Mendes Soares ◽

Andrea Dunshee de Abranches ◽

Ana Carolina Carioca da Costa ◽

Letícia Duarte Villela ◽

...

Keyword(s):

Birth Weight ◽

Preterm Infants ◽

Gestational Age ◽

Very Low Birth Weight ◽

Body Weight Gain ◽

Nutritional Deficiencies ◽

Percentage Error ◽

Electronic Instrument ◽

Health Providers ◽

Low Birth Weight Infants

ABSTRACT Objective: To create an electronic instrument in order to analyze the adequacy of the preterm infants’ nutritional therapy, checking the difference between the prescribed and the administered diet. Methods: A prospective and observational study on newborns with birthweight ≤1,500g and/or gestational age ≤32 weeks, without congenital malformations. The electronic instrument was developed based on Microsoft Excel 2010 spreadsheets and aimed at automatically calculating body weight gain, calories and macronutrients received daily by each patient from parenteral nutrition, intravenous hydration and enteral feedings. The weekly means of each nutrient were used to compare the prescribed and administered diets. Results: To evaluate the instrument, 60 newborns with a birth weight of 1,289±305 g and a gestational age of 30±2 weeks were included. Of them, 9.6% had restricted growth at birth and 55% at discharge. The median length of stay was 45±17 days. There were significant differences between prescribed and administered diet for all of the macronutrients and for total calories in the first three weeks. The lipid was the macronutrient with the greatest percentage error in the first week of life. Conclusions: The use of a computational routine was important to verify differences between the prescribed and the administered diet. This analysis is necessary to minimize calculation errors and to speed up health providers’ decisions about the nutritional approach, which can contribute to patients’ safety and to good nutritional practice. Very low birth weight infants are extremely vulnerable to nutritional deficiencies and any reduction in macronutrients they receive may be harmful to achieve satisfactory growth.

Download Full-text

Premature small for gestational age infants fed an exclusive human milk-based diet achieve catch-up growth without metabolic consequences at 2 years of age

Archives of Disease in Childhood - Fetal and Neonatal Edition ◽

10.1136/archdischild-2017-314547 ◽

2018 ◽

Vol 104 (3) ◽

pp. F242-F247 ◽

Cited By ~ 4

Author(s):

Chonnikant Visuthranukul ◽

Steven A Abrams ◽

Keli M Hawthorne ◽

Joseph L Hagan ◽

Amy B Hair

Keyword(s):

Insulin Resistance ◽

Body Composition ◽

Birth Weight ◽

Human Milk ◽

Premature Infants ◽

Gestational Age ◽

Small For Gestational Age ◽

Insulin Level ◽

Metabolic Outcomes ◽

Catch Up

ObjectiveTo compare postdischarge growth, adiposity and metabolic outcomes of appropriate for gestational age (AGA) versus small for gestational age (SGA) premature infants fed an exclusive human milk (HM)-based diet in the neonatal intensive care unit.DesignPremature infants (birth weight ≤1250 g) fed an exclusive HM-based diet were examined at 12–15 months corrected gestational age (CGA) (visit 1) for anthropometrics, serum glucose and non-fasting insulin, and at 18–22 months CGA (visit 2) for body composition by dual-energy X-ray absorptiometry.ResultsOf 51 children, 33 were AGA and 18 were SGA at birth. The SGA group had weight gain (g/day) equal to AGA group during the follow-up period. SGA had a significantly greater body mass index (BMI) z-score gain from visit 1 to visit 2 (0.25±1.10 vs −0.21±0.84, p=0.02) reflecting catch-up growth. There were no significant differences in total fat mass (FM) and trunk FM between groups. SGA had significantly lower insulin level (5.0±3.7 vs 17.3±15.1 µU/mL, p=0.02) and homeostatic model of assessment-insulin resistance (1.1±0.9 vs 4.3±4.1, p=0.02). Although regional trunk FM correlated with insulin levels in SGA (r=0.893, p=0.04), they had lower insulin level compared with AGA and no difference in adiposity.ConclusionsSGA premature infants who received an exclusive HM-based diet exhibited greater catch-up growth without increased adiposity or elevated insulin resistance compared with AGA at 2 years of age. An exclusive HM-based diet may improve long-term body composition and metabolic outcomes of premature infants with ≤1250 g birth weight, specifically SGA.

Download Full-text