Factors Affecting Heart Rate Variability in Preterm Infants

PEDIATRICS ◽  
1980 ◽  
Vol 65 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Luis A. Cabal ◽  
Bijan Siassi ◽  
Bernardino Zanini ◽  
Joan E. Hodgman ◽  
Edward E. Hon
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Birth Weight ◽  
Preterm Infants ◽  
Gestational Age ◽  
Distress Syndrome ◽  
Good Prognosis ◽  
Factors Affecting ◽  
Rate Level ◽  
Heart Rate Level

Neonatal heart rate variability (NHRV) was studied in 92 preterm infants (birth weight, 750 to 2,500 gm; gestational age, 28 to 36 weeks). Each infant was monitored continuously during the first 6 hours and for one hour at 24, 48, and 168 hours of life. During each hour NHRV was quantified and related to the following parameters: sex, gestational age, postnatal age, heart rate, and the presence and severity of respiratory distress syndrome (RDS). NHRV in healthy preterm infants was inversely related to heart rate level and directly related to the infant's postnatal age. In healthy babies with gestations of 30 to 36 weeks there was no significant correlation between NHRV and gestation. Decrease in NHRV was significantly related to the severity of RDS, and the reappearance of NHRV in infants with RDS was associated with a good prognosis. Decreased NHRV significantly differentiated the infants with RDS who survived after the fifth hour of life. The data reveal that NHRV (1) should be corrected for heart rate level and postnatal age; (2) is decreased in RDS; and (3) can be used as an indicator of morbidity and mortality in preterm infants with RDS.

scholarly journals Mean Heart Rate Level Does Not Affect All Heart Rate Variability Indices

Hypertension ◽  
2017 ◽  
Vol 69 (5) ◽  
Author(s):  
Luiz Eduardo Virgilio Silva ◽  
Helio Cesar Salgado ◽  
Rubens Fazan
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Rate Level ◽  
Heart Rate Level ◽  
Mean Heart Rate

Competing Risk Analysis of the Health Status of Neonates with Respiratory Distress Syndrome

2020 ◽  
Author(s):  
Zenaw Ayele ◽  
Mekonnen Tadesse ◽  
Zelalem Tazu
Keyword(s):  
Prognostic Factors ◽  
Birth Weight ◽  
Health Status ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Neonatal Mortality ◽  
Preterm Infants ◽  
Gestational Age ◽  
Distress Syndrome ◽  
Competing Risk

Introduction: Respiratory distress syndrome (RDS) is not only the most common respiratory disorder in premature infants but also the main cause of neonatal mortality. Methods: Competing risk framework was used to examine and identify potential prognostic factors of the health status of preterm infants with respiratory distress syndrome. Preterm infants with RDS admitted to the neonatal intensive care units (NICUs) of selected hospitals in Ethiopia were followed for 28 days and only neonates with complete cases were included in the analysis. The Fine-Gray or sub-distribution hazard model was used to identify significant prognostic factors. Three outcome variables (death due to RDS, death due to other causes and discharged alive) were considered. Results: The Fine-Gray model fit results revealed that anemia, multiple pregnancies, birth-weight and gestational age were the prognostic factors significantly associated with the death of neonates due to Respiratory distress syndrome problem while Pneumonia, meningitis, anemia and gestational age of neonates were the significant prognostic factors for death of neonates due to other causes. Moreover, pneumonia, birth weight and gestational age were identified as the prognostic factors associated with neonates being discharged alive. Conclusion: Offering intensive and adequate treatments for neonates with lowest birth-weights and gestational age may be useful to reduce neonatal mortality and increase the incidence of being discharged alive.

scholarly journals Investigation Into the Current Situation and Analysis of the Factors Influencing Extrauterine Growth Retardation in Preterm Infants

2021 ◽  
Vol 9 ◽  
Author(s):  
Ting Zhao ◽  
Hui-Ming Feng ◽  
Bayier Caicike ◽  
Yan-Ping Zhu
Keyword(s):  
Birth Weight ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Preterm Infants ◽  
Gestational Age ◽  
Growth Retardation ◽  
Distress Syndrome ◽  
Factors Influencing ◽  
Extrauterine Growth Retardation ◽  
Growth Indicators

Objective: This study aims to explore the occurrence of extrauterine growth retardation (EUGR) in preterm infants with a gestational age of <34 weeks, at discharge, and the factors influencing the occurrence of EUGR.Method: A retrospective analysis of 691 preterm infants with a gestational age of less than 34 weeks, born in our hospital over the past 3 years. At discharge, the growth indicators head circumference, weight, and length were used to divide the infants into an EUGR group (n = 255) and the non-EUGR group (n = 436). The occurrence of EUGR and its influencing factors were then analyzed.Results: Of the 691 preterm infants evaluated for inclusion in the study, 255 cases (36.9%) met the requirements of EUGR at discharge. The different growth indicators used, i.e., weight, length, and head circumference, classified the infants differently. The incidence of EUGR using these measures was 30.2% (209), 27.9% (193), and 23.2% (161), respectively. The results of a univariate analysis showed that gestational age, birth weight, intrauterine growth retardation (IUGR), maternal gestational hypertension, age at which the infant commenced feeding, duration of the application of an invasive ventilator, length of hospital stay, nosocomial infection, respiratory and gastrointestinal diseases, symptomatic patent ductus arteriosus, and the early onset of neonatal sepsis were correlated with the occurrence of EUGR. Further logistic multivariate regression analysis revealed that low gestational age, low birth weight, complicated IUGR, respiratory distress syndrome, and necrotizing enterocolitis were independent risk factors for EUGR in preterm infants with a gestational age <34 weeks.Conclusion: In preterm infants with a gestational age <34 weeks in our hospital, there is a high incidence of EUGR, which is affected by factors such as the gestational age, birth weight, IUGR, respiratory distress syndrome, necrotizing enterocolitis, and other factors.

scholarly journals 941 PHYSIOLOGICAL AND PATHOLOGICAL FACTORS AFFECTING HEART RATE VARIABILITY IN PRETERM INFANTS

1978 ◽  
Vol 12 ◽  
pp. 520-520
Author(s):  
Luis A Cabal ◽  
Bijan Siassi ◽  
Bernardino Zanini ◽  
Feizal Waffarn ◽  
Joan E Hodgman
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Preterm Infants ◽  
Factors Affecting

Factors Affecting Heart Rate Variability in Preterm Infants

1980 ◽  
Vol 35 (10) ◽  
pp. 700-701
Author(s):  
LUIS A. CABAL ◽  
BIJAN SIASSI ◽  
BERNARDINO ZANINI ◽  
JOAN E. HODGMAN ◽  
EDWARD E. HON
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Preterm Infants ◽  
Factors Affecting

Factors Affecting Heart Rate Variability in Preterm Infants

1980 ◽  
Vol 35 (11) ◽  
pp. 700 ◽  
Author(s):  
Luis A. Cabal ◽  
Bijan Siassi ◽  
Bernardino Zanini ◽  
Joan E. Hodgman ◽  
Edward E. Hon
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Preterm Infants ◽  
Factors Affecting

The influence of respiratory distress syndrome on heart rate variability in very preterm infants

1991 ◽  
Vol 27 (3) ◽  
pp. 207-221 ◽  
Author(s):  
Conny M.A. van Ravenswaaij-Arts ◽  
Jeroen C.W. Hopman ◽  
Louis AA. Kollée ◽  
Joop P.L. van Amen ◽  
Gerard B.A. Stoelinga ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Preterm Infants ◽  
Distress Syndrome ◽  
Very Preterm Infants ◽  
Very Preterm

scholarly journals Statistical Modeling of Heart Rate Variability to Unravel the Factors Affecting Autonomic Regulation in Preterm Infants

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Rohan Joshi ◽  
Deedee Kommers ◽  
Chengcheng Guo ◽  
Jan-Willem Bikker ◽  
Loe Feijs ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Statistical Modeling ◽  
Preterm Infants ◽  
Autonomic Regulation ◽  
Factors Affecting

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

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.

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