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Journal of Neurotrauma Mar 2009In this article, the role of hypothermia and neuroprotection for neonatal encephalopathy will be discussed. The incidence of encephalopathy due to hypoxia ischemia as... (Review)
Review
In this article, the role of hypothermia and neuroprotection for neonatal encephalopathy will be discussed. The incidence of encephalopathy due to hypoxia ischemia as well as the pathophysiology will be presented. The diagnosis of encephalopathy in full-term neonates will be discussed. The current management of brain injury that occurs with hypoxia ischemia and the role of hypothermia in preventing brain injury in fetal and neonatal animal models will be reviewed. The current data from randomized control trials of hypothermia as neuroprotection for full-term infants will be presented along with the results of meta-analyses of these trials. Lastly, the status of ongoing neonatal hypothermia trials will be summarized.
Topics: Animals; Asphyxia Neonatorum; Body Temperature; Brain; Cerebrovascular Circulation; Disease Models, Animal; Energy Metabolism; Humans; Hypothermia, Induced; Hypoxia-Ischemia, Brain; Infant, Newborn
PubMed: 19281415
DOI: 10.1089/neu.2008.0678 -
BMC Pregnancy and Childbirth Aug 2023Birth asphyxia is of significant concern because it impacts newborn health from low to severe levels. In Thailand, birth asphyxia remains a leading cause of delayed...
BACKGROUND
Birth asphyxia is of significant concern because it impacts newborn health from low to severe levels. In Thailand, birth asphyxia remains a leading cause of delayed developmental health in children under 5 years old. The study aimed to determine the maternal, fetal and health service factors contributing to birth asphyxia.
METHODS
A case-control design was conducted on a sample of 4256 intrapartum chart records. The samples were selected based on their Apgar scores in the first minute of life. A low Apgar score (≤ 7) was chosen for the case group (852) and a high Apgar score (> 7) for the control group (3408). In addition, a systematic random technique was performed to select 23 hospitals, including university, advanced and secondary, in eight health administration areas in Thailand for evaluating the intrapartum care service. Data analysis was conducted using SPSS statistical software.
RESULTS
The odds of birth asphyxia increases in the university and advanced hospitals but the university hospitals had the highest quality of care. The advanced and secondary hospitals had average nurse work-hours per week of more than 40 h. Multivariable logistic regression analysis found that intrapartum care services and maternal-fetal factors contributed to birth asphyxia. The odd of birth asphyxia increases significantly in late-preterm, late-term pregnancies, low-birth weight, and macrosomia. Furthermore, maternal comorbidity, non-reassuring, and obstetric emergency conditions significantly increase the odd of birth asphyxia. In addition, an excellent quality of intrapartum care, a combined nursing model, low nurse work-hours, and obstetrician-conducted delivery significantly reduced birth asphyxia.
CONCLUSION
Birth asphyxia problems may be resolved in the health service management offered by reducing the nurse work-hours. Excellent quality of care required the primary nursing care model combined with a team nursing care model. However, careful evaluation and monitoring are needed in cases of comorbidity, late-preterm, late-term pregnancies, low-birth weight, and macrosomia. Furthermore, increasing the obstetrician availability in obstetric emergencies and non-reassuring fetal status is important.
Topics: Child, Preschool; Female; Humans; Infant, Newborn; Pregnancy; Apgar Score; Asphyxia; Asphyxia Neonatorum; Birth Weight; Case-Control Studies; Fetal Macrosomia; Hospitals, University; Risk Factors; Thailand
PubMed: 37582743
DOI: 10.1186/s12884-023-05885-y -
Pediatric Research Jan 2017Acute postasphyxial encephalopathy around the time of birth remains a major cause of death and disability. The possibility that hypothermia may be able to prevent or... (Review)
Review
Acute postasphyxial encephalopathy around the time of birth remains a major cause of death and disability. The possibility that hypothermia may be able to prevent or lessen asphyxial brain injury is a "dream revisited". In this review, a historical perspective is provided from the first reported use of therapeutic hypothermia for brain injuries in antiquity, to the present day. The first uncontrolled trials of cooling for resuscitation were reported more than 50 y ago. The seminal insight that led to the modern revival of studies of neuroprotection was that after profound asphyxia, many brain cells show initial recovery from the insult during a short "latent" phase, typically lasting ~6 h, only to die hours to days later during a "secondary" deterioration phase characterized by seizures, cytotoxic edema, and progressive failure of cerebral oxidative metabolism. Studies designed around this conceptual framework showed that mild hypothermia initiated as early as possible before the onset of secondary deterioration, and continued for a sufficient duration to allow the secondary deterioration to resolve, is associated with potent, long-lasting neuroprotection. There is now compelling evidence from randomized controlled trials that mild induced hypothermia significantly improves intact survival and neurodevelopmental outcomes to midchildhood.
Topics: Animals; Asphyxia; Asphyxia Neonatorum; Brain Injuries; History, 20th Century; History, Ancient; Humans; Hypothermia, Induced; Hypoxia-Ischemia, Brain; Infant, Newborn; Neuroprotection; Randomized Controlled Trials as Topic; Seizures
PubMed: 27673420
DOI: 10.1038/pr.2016.198 -
Neonatology 2014The transition to life after birth is characterized by major physiological changes in respiratory and hemodynamic function, which are predominantly initiated by... (Review)
Review
The transition to life after birth is characterized by major physiological changes in respiratory and hemodynamic function, which are predominantly initiated by breathing at birth and clamping of the umbilical cord. Lung aeration leads to the establishment of functional residual capacity, allowing pulmonary gas exchange to commence. This triggers a significant decrease in pulmonary vascular resistance, consequently increasing pulmonary blood flow and cardiac venous return. Clamping the umbilical cord also contributes to these hemodynamic changes by altering the cardiac preload and increasing peripheral systemic vascular resistance. The resulting changes in systemic and pulmonary circulation influence blood flow through both the oval foramen and ductus arteriosus. This eventually leads to closure of these structures and the separation of the pulmonary and systemic circulations. Most of our knowledge on human neonatal transition is based on human (fetal) data from the 1970s and extrapolation from animal studies. However, there is renewed interest in performing measurements directly at birth. By using less cumbersome techniques (and probably more accurate), our previous understanding of the physiological transition at birth is challenged, as well as the causes and consequences for when this transition fails to progress. This review will provide an overview of physiological measurements of the respiratory and hemodynamic transition at birth. Also, it will give a perspective on some of the upcoming technological advances in physiological measurements of neonatal transition in infants who are unable to make the transition without support.
Topics: Adaptation, Physiological; Animals; Asphyxia Neonatorum; Cardiopulmonary Resuscitation; Cardiovascular System; Constriction; Coronary Circulation; Female; Hemodynamics; Humans; Infant, Newborn; Lung; Placental Circulation; Pregnancy; Pulmonary Circulation; Respiration; Treatment Outcome; Umbilical Cord
PubMed: 24504011
DOI: 10.1159/000356704 -
Tidsskrift For Den Norske Laegeforening... May 2018Hjerte-lunge-redning av et kritisk sykt barn ved fødsel kan føre til overlevelse eller død. De som overlever kan utvikle komplikasjoner direkte etter fødsel eller... (Review)
Review
BAKGRUNN
Hjerte-lunge-redning av et kritisk sykt barn ved fødsel kan føre til overlevelse eller død. De som overlever kan utvikle komplikasjoner direkte etter fødsel eller senere i småbarns- og skolealder. Hypoksisk iskemisk encefalopati er en tilstand med nevrologiske symptomer hos den nyfødte etter hypoksi ved fødsel. Tilstanden klassifiseres som mild, moderat eller alvorlig. Vi ønsket å gi en oversikt over kort- og langtidsutfall etter hjerte-lunge-redning ved fødsel.
KUNNSKAPSGRUNNLAG
Vi søkte i databasen Medline for utfall etter hjerte-lunge-redning ved fødsel.
RESULTATER
Vi identifiserte 15 indekserte, fagfellevurderte originalartikler og to metaanalyser om utfall etter hjerte-lunge-redning ved fødsel eller fødselsasfyksi. Hypoksisk iskemisk encefalopati rammer generelt 38 % av pasientene i mild til moderat grad og 23 % i alvorlig grad. Dødeligheten varierte fra 10 % i høy- til 28 % i lavinntektsland. Overlevende utvikler ofte motoriske, kognitive og sensoriske utviklingshemninger. I noen tilfeller blir det først avdekket ved skolestart når mer komplekse ferdigheter kreves.
FORTOLKNING
Funksjonshemning ved skolealder er sterkt korrelert til tilstanden i småbarnsalder. Endringer i algoritmene ved hjerte-lunge-redning og rutinebehandling med hypotermi har redusert risikoen for alvorlige følgetilstander etter hypoksisk iskemisk encefalopati.
Topics: Asphyxia Neonatorum; Cardiopulmonary Resuscitation; Child; Humans; Hypothermia, Induced; Hypoxia-Ischemia, Brain; Infant, Newborn; Time; Treatment Outcome
PubMed: 29808658
DOI: 10.4045/tidsskr.17.0358 -
Ginekologia Polska 2016The aim of the study was to evaluate activin A and NGAL levels as potential early markers of perinatal hypoxia.
OBJECTIVES
The aim of the study was to evaluate activin A and NGAL levels as potential early markers of perinatal hypoxia.
MATERIAL AND METHODS
We prospectively studied 58 full-term newborns: 24 with perinatal hypoxia (study group) and 34 healthy controls. Umbilical cord blood samples were obtained from all subjects immediately after delivery for the measurement of activin A and NGAL levels. Both biomarkers were correlated with biochemical indicators od hypoxia and neonatal complications.
RESULTS
Activin A levels were significantly higher in hypoxic as compared to non-hypoxic newborns (0.51 vs. 0.22pg/mL; p<0.01). NGAL levels were also higher in asphyxiated babies as compared to controls (99.1 vs. 22.3ng/mL; p<0.001). A correlation between NGAL and activin A levels was detected (R=0.54; p<0.01). NGAL concentration was also correlated with Apgar score at 5 min. and pH value, HCO3, based deficit and lactate levels. ROC curve analysis demonstrated the cutoff value of >33.9ng/ml for NGAL in prediction of perinatal asphyxia in neonates, with a sensitivity of 100% and specificity 78.3%, whereas the cutoff value for activin A was 0.208ng/ml had, with a sensitivity of 93.1% and only 26.7% specificity.
CONCLUSIONS
Asphyxiated neonates demonstrate elevated NGAL and activin A levels as compared to controls. The correlation of NGAL with clinical and biochemical signs of neonatal hypoxia, as well as higher sensitivity and specificity for NGAL measurements, have led us to believe that NGAL could be a better marker of perinatal hypoxia than activin A.
Topics: Activins; Asphyxia Neonatorum; Biomarkers; Case-Control Studies; Fetal Blood; Humans; Infant, Newborn; Lipocalin-2; Prospective Studies
PubMed: 27306129
DOI: 10.17772/gp/60552 -
PloS One 2019In the state of Bihar, India a multi-faceted quality improvement nurse-mentoring program was implemented to improve provider skills in normal and complicated deliveries....
BACKGROUND
In the state of Bihar, India a multi-faceted quality improvement nurse-mentoring program was implemented to improve provider skills in normal and complicated deliveries. The objective of this analysis was to examine changes in diagnosis and management of postpartum hemorrhage (PPH) of the mother and intrapartum asphyxia of the infant in primary care facilities in Bihar, during the program.
METHODS
During the program, mentor pairs visited each facility for one week, covering four facilities over a four-week period and returned for subsequent week-long visits once every month for seven to nine consecutive months. Between- and within-facility comparisons were made using a quasi-experimental and a longitudinal design over time, respectively, to measure change due to the intervention. The proportions of PPH and intrapartum asphyxia among all births as well as the proportions of PPH and intrapartum asphyxia cases that were effectively managed were examined. Zero-inflated negative binomial models and marginal structural methodology were used to assess change in diagnosis and management of complications after accounting for clustering of deliveries within facilities as well as time varying confounding.
RESULTS
This analysis included 55,938 deliveries from 320 facilities. About 2% of all deliveries, were complicated with PPH and 3% with intrapartum asphyxia. Between-facility comparisons across phases demonstrated diagnosis was always higher in the final week of intervention (PPH: 2.5-5.4%, intrapartum asphyxia: 4.2-5.6%) relative to the first week (PPH: 1.2-2.1%, intrapartum asphyxia: 0.7-3.3%). Within-facility comparisons showed PPH diagnosis increased from week 1 through 5 (from 1.6% to 4.4%), after which it decreased through week 7 (3.1%). A similar trend was observed for intrapartum asphyxia. For both outcomes, the proportion of diagnosed cases where selected evidence-based practices were used for management either remained stable or increased over time.
CONCLUSIONS
The nurse-mentoring program appears to have built providers' capacity to identify PPH and intrapartum asphyxia cases but diagnosis levels are still not on par with levels observed in Southeast Asia and globally.
Topics: Asphyxia Neonatorum; Disease Management; Education; Education, Nursing, Continuing; Female; Humans; India; Infant, Newborn; Mentoring; Postpartum Hemorrhage; Pregnancy; Quality Improvement
PubMed: 31276503
DOI: 10.1371/journal.pone.0216654 -
Pediatrics and Neonatology Jul 2021
Topics: Asphyxia; Asphyxia Neonatorum; Female; Humans; Infant, Newborn; Pregnancy
PubMed: 33610478
DOI: 10.1016/j.pedneo.2021.01.010 -
The Journal of Pediatrics Jul 2023To assess the evolution of neonatal brain injury noted on magnetic resonance imaging (MRI), develop a score to assess brain injury on 3-month MRI, and determine the...
OBJECTIVE
To assess the evolution of neonatal brain injury noted on magnetic resonance imaging (MRI), develop a score to assess brain injury on 3-month MRI, and determine the association of 3-month MRI with neurodevelopmental outcome in neonatal encephalopathy (NE) following perinatal asphyxia.
METHODS
This was a retrospective, single-center study including 63 infants with perinatal asphyxia and NE (n = 28 cooled) with cranial MRI <2 weeks and 2-4 months after birth. Both scans were assessed using biometrics, a validated injury score for neonatal MRI, and a new score for 3-month MRI, with a white matter (WM), deep gray matter (DGM), and cerebellum subscore. The evolution of brain lesions was assessed, and both scans were related to 18- to 24-month composite outcome. Adverse outcome included cerebral palsy, neurodevelopmental delay, hearing/visual impairment, and epilepsy.
RESULTS
Neonatal DGM injury generally evolved into DGM atrophy and focal signal abnormalities, and WM/watershed injury evolved into WM and/or cortical atrophy. Although the neonatal total and DGM scores were associated with composite adverse outcomes, the 3-month DGM score (OR 1.5, 95% CI 1.2-2.0) and WM score (OR 1.1, 95% CI 1.0-1.3) also were associated with composite adverse outcomes (occurring in n = 23). The 3-month multivariable model (including the DGM and WM subscores) had higher positive (0.88 vs 0.83) but lower negative predictive value (0.83 vs 0.84) than neonatal MRI. Inter-rater agreement for the total, WM, and DGM 3-month score was 0.93, 0.86, and 0.59.
CONCLUSIONS
In particular, DGM abnormalities on 3-month MRI, preceded by DGM abnormalities on the neonatal MRI, were associated with 18- to 24-month outcome, indicating the utility of 3-month MRI for treatment evaluation in neuroprotective trials. However, the clinical usefulness of 3-month MRI seems limited compared with neonatal MRI.
Topics: Infant, Newborn; Pregnancy; Female; Infant; Humans; Retrospective Studies; Asphyxia; Magnetic Resonance Imaging; Infant, Newborn, Diseases; Asphyxia Neonatorum; Brain Injuries; Atrophy; Brain
PubMed: 37019329
DOI: 10.1016/j.jpeds.2023.113402 -
BMC Pediatrics Jul 2022The leading cause of neonatal death worldwide is birth asphyxia. Yearly, in the first month of life, 2.5 million children died around the world. Birth asphyxia is a...
BACKGROUND
The leading cause of neonatal death worldwide is birth asphyxia. Yearly, in the first month of life, 2.5 million children died around the world. Birth asphyxia is a major problem, particularly in developing nations like Ethiopia. The goal of this study was to determine the magnitude of birth asphyxia and the factors that contributed to it among neonates delivered at the Aykel Primary Hospital in north-central Ethiopia.
METHODS
From August 1 to August 31, 2021, a hospital-based cross-sectional study was conducted on 144 live births. An Apgar score less than 7 in the fifth minute of birth authorized the diagnosis of birth asphyxia. Variable contention (P < 0.250) for multivariable analysis was determined after data examination and cleaning. Then, to identify important factors of birth asphyxia, a multivariable logistic regression model with a p-value of 0.05 was developed. Finally, a significant relationship between a dependent variable and independent factors was defined as a p-value less than 0.05 with a 95% confidence interval.
RESULTS
The majority of the mothers, 71.53%, received at least one Antenatal care visit, and more than half of the newborns were male (62.50%). The percentage of neonates that had asphyxia at delivery was 11.11% (95% CI: 6.3 -16.9%). Male newborns were 5.02 times more probable than female newborns to asphyxiate [AOR: 5.02, 95% CI (1.11-22.61)]. Mothers who have not had at least one Antenatal Care visit were 3.72 times more likely to have an asphyxiated newborn than those who have at least one Antenatal Care visit [AOR: 3.72, 95%CI (1.11-12.42)]. Similarly, mothers who had an adverse pregnancy outcome were 7.03 times more likely to have an asphyxiated newborn than mothers who had no such history [AOR: 7.03, 95% CI (2.17-22.70)].
CONCLUSION
Birth asphyxia in newborn has come to a standstill as a major public health issue. The sexual identity of the newborn, Antenatal Care visits, and a history of poor pregnancy outcomes were all found to be significant risk factors for birth asphyxia. These findings have great importance for various stakeholders who are responsible for reducing birth asphyxia; in addition, policymakers should establish and revise guidelines associated to newborn activities and workshops.
Topics: Asphyxia; Asphyxia Neonatorum; Child; Cross-Sectional Studies; Ethiopia; Female; Humans; Infant, Newborn; Live Birth; Male; Pregnancy
PubMed: 35850676
DOI: 10.1186/s12887-022-03500-1