scholarly journals NICU Admissions for Meconium Aspiration Syndrome before and after a National Resuscitation Program Suctioning Guideline Change

Children ◽  
2019 ◽  
Vol 6 (5) ◽  
pp. 68 ◽  
Author(s):  
Erika M. Edwards ◽  
Satyan Lakshminrusimha ◽  
Danielle E. Y. Ehret ◽  
Jeffrey D. Horbar
Keyword(s):  
Neonatal Intensive Care ◽  
Neonatal Resuscitation ◽  
The United States ◽  
Meconium Aspiration Syndrome ◽  
High Frequency Ventilation ◽  
Network Member ◽  
Endotracheal Suctioning ◽  
Subsequent Increase ◽  
Severe Respiratory Distress ◽  
Meconium Aspiration

The Textbook of Neonatal Resuscitation, seventh edition, does not suggest routine endotracheal suctioning for non-vigorous infants born through meconium-stained amniotic fluid. We compared 301,150 infants at ≥35 weeks’ gestational age inborn at 311 Vermont Oxford Network member centers in the United States (U.S.) and admitted to neonatal intensive care units (NICU) who were born before (2013 to 2015) and after (2017) the guideline change. Logistic regression models adjusting for clustering of infants within centers were used to calculate risk ratios. NICU admissions for infants with a diagnosis of meconium aspiration syndrome (MAS) decreased from 1.8% to 1.5% (risk ratio: 0.82; 95% confidence interval: 0.68, 0.97) and delivery room endotracheal suctioning in this group decreased from 57.0% to 28.9% (0.51; 0.41, 0.62). Treatment with conventional or high frequency ventilation, inhaled nitric oxide, or extracorporeal membrane oxygenation remained unchanged 42.3% vs. 40.3% (0.95; 0.80, 1.13) among infants with MAS and 9.1% vs. 8.2% (0.91; 0.87, 0.95) among infants without MAS. The use of surfactant among infants with MAS increased from 24.6% to 30% (1.22; 1.02, 1.48). Mortality (2.6 to 2.9%, 1.12; 0.74, 1.69) and moderate/severe hypoxic-ischemic encephalopathy (5.4 to 6.8%, 1.24; 0.91, 1.69) increased slightly in 2017. Subgroup analyses of infants with 1 min Apgar scores of ≤3 found similar results. While NICU admissions for MAS and tracheal suctioning decreased after the introduction of the new guideline with no subsequent increase in severe respiratory distress among infants with and without a MAS diagnosis, limitations in our study preclude inferring that the new guideline is safe or effective.

scholarly journals Randomized Trial of Oxygen Saturation Targets during and after Resuscitation and Reversal of Ductal Flow in an Ovine Model of Meconium Aspiration and Pulmonary Hypertension

Children ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 594
Author(s):  
Amy L. Lesneski ◽  
Payam Vali ◽  
Morgan E. Hardie ◽  
Satyan Lakshminrusimha ◽  
Deepika Sankaran
Keyword(s):  
Blood Flow ◽  
Pulmonary Hypertension ◽  
Oxygen Saturation ◽  
Ductus Arteriosus ◽  
Neonatal Resuscitation ◽  
Meconium Aspiration Syndrome ◽  
Ovine Model ◽  
Neurodevelopmental Outcomes ◽  
Meconium Aspiration ◽  
Blood Flows

Neonatal resuscitation (NRP) guidelines suggest targeting 85–95% preductal SpO2 by 10 min after birth. Optimal oxygen saturation (SpO2) targets during resuscitation and in the post-resuscitation management of neonatal meconium aspiration syndrome (MAS) with persistent pulmonary hypertension (PPHN) remains uncertain. Our objective was to compare the time to reversal of ductal flow from fetal pattern (right-to-left), to left-to-right, and to evaluate pulmonary (QPA), carotid (QCA)and ductal (QDA) blood flows between standard (85–94%) and high (95–99%) SpO2 targets during and after resuscitation. Twelve lambs asphyxiated by endotracheal meconium instillation and cord occlusion to induce MAS and PPHN were resuscitated per NRP guidelines and were randomized to either standard (85–94%) or high (95–99%) SpO2 targets. Out of twelve lambs with MAS and PPHN, six each were randomized to standard and high SpO2 targets. Median [interquartile range] time to change in direction of blood flow across the ductus arteriosus from right-to-left, to left-to-right was significantly shorter with high SpO2 target (7.4 (4.4–10.8) min) compared to standard SpO2 target (31.5 (21–66.2) min, p = 0.03). QPA was significantly higher during the first 10 min after birth with higher SpO2 target. At 60 min after birth, the QPA, QCA and QDA were not different between the groups. To conclude, targeting SpO2 of 95–99% during and after resuscitation may hasten reversal of ductal flow in lambs with MAS and PPHN and transiently increase QPA but no differences were observed at 60 min. Clinical studies comparing low and high SpO2 targets assessing hemodynamics and neurodevelopmental outcomes are warranted.

scholarly journals Perinatal Outcome Associated with Meconium Stained Amniotic Fluid In Pregnancy

2015 ◽  
Vol 4 (2) ◽  
pp. 44-49 ◽  
Author(s):  
Nasrin Begum ◽  
Sharmeen Mahmood ◽  
Salma Akhter Munmun ◽  
MS Haque ◽  
KN Nahar ◽  
...  
Keyword(s):  
Birth Weight ◽  
Amniotic Fluid ◽  
Apgar Score ◽  
Perinatal Outcome ◽  
Perinatal Death ◽  
Mode Of Delivery ◽  
Neonatal Resuscitation ◽  
Meconium Aspiration Syndrome ◽  
Meconium Aspiration ◽  
Meconium Stained Amniotic Fluid

Objectives: To evaluate perinatal outcome associated with meconium stained amniotic fluid in pregnant women.Methods: It was a prospective cross sectional study, conducted in the Department of Obstetrics and Gynecology in Bangabandhu Sheikh Mujib Medical University, Dhaka, from January 2013 to December 2013. Total 50 pregnant women admitted in the labour ward for delivery with meconium stained amniotic fluid were the study population. Singleton pregnancy of more than 34 weeks duration was included and pregnancy with APH, breech presentation, congenital malformation of fetus, IUD were excluded from the study. Out of 50 patients two did not provide all the information needed to analyze the data and hence were excluded. Outcome Variables were gestational age, antenatal checkup, medical diseases of mother (HTN, Diabetes mellitus, Heart disease), obstetric complication (oligohydramnios, prolonged labour), mode of delivery, neonatal details (weight of the baby in kg, APGAR scoring at 1 min & 5 min), neonatal resuscitation, admission in neonatal ICU(NICU), neonatal complications (RDS, MAS, Neonatal death).Results: Over half (52.1%) of the neonates needed resuscitation and 54.2% admitted in ICU. About 90% of the neonates had normal birth weight and only 10.4% were of low birth weight. 14.6% of the neonates developed meconium aspiration syndrome and 10.4% respiratory distress syndrome. Neonatal jaundice and neonatal sepsis were observed in 4.2% neonates each. Four neonates (8.3%) died early in the neonatal life, while 1 (2.1 %) was still-born. Low APGAR score (<7) at 1 and 5 minutes of birth was found in 64.7% and 52.9% of the cases respectively with thick meconium stained amniotic fluid as opposed to 25.8% and 16.1% of the cases respectively having thin meconium stained amniotic fluid (p = 0.008 and p = 0.007 respectively). Thick meconium was significantly associated with meconium aspiration syndrome (p = 0.003). Neonates needing immediate resuscitation and admission in ICU was staggeringly higher in the former group than those in the later group (p = 0.002). The incidence of perinatal death was significantly higher in patients with thick meconium stained amniotic fluid than that in patients with thin meconium ( p= 0.021).Conclusion: Meconium stained amniotic fluid was associated with low APGAR score, higher incidence of MAS, ICU admission and perinatal death.J. Paediatr. Surg. Bangladesh 4(2): 44-49, 2013 (July)

scholarly journals Etiological factors, clinical profile and outcome of meconium aspiration syndrome babies

2019 ◽  
Vol 6 (4) ◽  
pp. 1515
Author(s):  
R. Sasivarathan ◽  
A. Logesh Anand
Keyword(s):  
Respiratory Distress ◽  
Tamil Nadu ◽  
Neonatal Intensive Care ◽  
Birth Asphyxia ◽  
Fetal Distress ◽  
Fetal Outcome ◽  
Meconium Aspiration Syndrome ◽  
College Hospital ◽  
Severe Respiratory Distress ◽  
Etiological Factors

Background: Meconium staining of amniotic fluid has for long been considered to be a bad predictor of the fetal outcome because of its direct correlation of fetal distress, and increased the likelihood of inhalation of meconium, resultant deleterious effects on the neonatal lung. To evaluate etiological factors and severity of MAS in the study group.Methods: This study was done in the Neonatal intensive care unit of the Department of Paediatrics, Government Mohan Kumaramangalam Medical College Hospital Salem, Tamil Nadu, India in the year 2018. Complete maternal and neonatal details were recorded in to the proforma. Delivery details, resuscitation did were also recorded.Results: In present study, fetal distress was found to be the most common (42.5%) factor associated with MAS followed by PIH (21.6%) and PROM (17%). 22 (9.1%) cases were associated with Postdatism, 18 (7.5%) cases were associated with placental insufficiency. 88 babies had fetal distress (36.6%) prior to delivery. 138 babies had no fetal distress (57.5%).Conclusions: MAS is known to cause severe respiratory distress and Downe’s score ranging between 4-8, usually a few hours after the onset of respiratory distress. Nearly 73.3% of the cases with MAS had birth asphyxia, out of which 30% had severe birth asphyxia. This indicates that passage of meconium can occur in utero, often considered a feature of the stressed fetus. Undoubtedly aspiration had occurred before delivery in these babies.

Approach to Infants Born Through Meconium Stained Amniotic Fluid: Evolution Based on Evidence?

2018 ◽  
Vol 35 (09) ◽  
pp. 815-822 ◽  
Author(s):  
Sushma Nangia ◽  
Praveen Chandrasekharan ◽  
Satyan Lakshminrusimha ◽  
Munmun Rawat
Keyword(s):  
Amniotic Fluid ◽  
Neonatal Intensive Care ◽  
Positive Pressure Ventilation ◽  
Neonatal Resuscitation ◽  
Meconium Aspiration Syndrome ◽  
Positive Pressure ◽  
Randomized Controlled Studies ◽  
Randomized Control ◽  
Meconium Stained Amniotic Fluid ◽  
Ischemic Encephalopathy

AbstractMeconium-stained amniotic fluid (MSAF) during delivery is a marker of fetal stress. Neonates born through MSAF often need resuscitation and are at risk of meconium aspiration syndrome (MAS), air leaks, hypoxic-ischemic encephalopathy, extracorporeal membrane oxygenation (ECMO), and death. The neonatal resuscitation approach to MSAF has evolved over the last three decades. Previously, nonvigorous neonates soon after delivery were suctioned under the vocal cords with direct visualization technique using a meconium aspirator. The recent neonatal resuscitation program (NRP) recommends against suctioning but favors resuscitation with positive pressure ventilation of nonvigorous neonates with MSAF. This recommendation is aimed to prevent delay in resuscitation and minimize hypoxia-ischemia often associated with MSAF. In this review, we discuss the pathophysiology, evolution and the evidence, randomized control trials, observational studies, and translational research to support these recommendations. The frequency of ECMO use for neonatal respiratory indication of MAS has declined over the years probably secondary to improvements in neonatal intensive care and reduction of postmaturity. Changes in resuscitation practices may have contributed to reduced incidence and severity of MAS. Larger randomized controlled studies are needed among nonvigorous infants with MSAF. However, ethical dilemmas and loss of equipoise pose a challenge to conduct such studies.

scholarly journals Advances in the Management of Meconium Aspiration Syndrome

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Kamala Swarnam ◽  
Amuchou S. Soraisham ◽  
Sindhu Sivanandan
Keyword(s):  
Nitric Oxide ◽  
Meconium Aspiration Syndrome ◽  
Term Infants ◽  
Severe Respiratory Distress ◽  
Meconium Aspiration ◽  
Common Cause ◽  
Acute Airway Obstruction ◽  
Life Threatening ◽  
Surfactant Dysfunction ◽  
Over Time

Meconium aspiration syndrome (MAS) is a common cause of severe respiratory distress in term infants, with an associated highly variable morbidity and mortality. MAS results from aspiration of meconium during intrauterine gasping or during the first few breaths. The pathophysiology of MAS is multifactorial and includes acute airway obstruction, surfactant dysfunction or inactivation, chemical pneumonitis with release of vasoconstrictive and inflammatory mediators, and persistent pulmonary hypertension of newborn (PPHN). This disorder can be life threatening, often complicated by respiratory failure, pulmonary air leaks, and PPHN. Approaches to the prevention of MAS have changed over time with collaboration between obstetricians and pediatricians forming the foundations for care. The use of surfactant and inhaled nitric oxide (iNO) has led to the decreased mortality and the need for extracorporeal membrane oxygenation (ECMO) use. In this paper, we review the current understanding of the pathophysiology and management of MAS.

scholarly journals Study on etiological profile of respiratory distress in new borns in a teaching hospital

2019 ◽  
Vol 6 (2) ◽  
pp. 454
Author(s):  
C. P. V. Ramana Sastry ◽  
Maram Padmavathi
Keyword(s):  
Risk Factors ◽  
Respiratory Distress ◽  
Female Gender ◽  
Meconium Aspiration Syndrome ◽  
Severe Respiratory Distress ◽  
Meconium Aspiration ◽  
New Born ◽  
Gestation Age ◽  
A Prospective Study ◽  
Treatment Mortality

Background: The aim is to study the various risk factors associated with development of severe respiratory distress in the new born.Methods: This was a prospective study of 200 new-borns with respiratory distress. Clinical details, etiology for the respiratory distress, system-wise factors responsible for the distress, severity and duration of respiratory distress, oxygen therapy, type of treatment, mortality, maternal and antenatal risk factors, radiological findings were noted in all the cases and were analysed.Results: Of the 200 cases with respiratory distress, 118 (59%) had severe respiratory distress. 154 cases with distress were of respiratory system in origin out of which 45% (70 out of 154) were due to Meconium aspiration syndrome, 42% (64 out of 154) were due to Respiratory distress syndrome, 12% (18 out of 154) were due to transient tachypnea of new-born and 2% were due to congenital pneumonia. More number of female patients had severe respiratory distress. Mortality was 2.5%.Conclusions: Meconium aspiration syndrome is the most common cause of respiratory distress in new born. Almost 60% of new borns with respiratory distress developed severe respiratory distress who required intensive monitoring. Risk factors like meconium stained liquor, vaginal delivered new borns, preterm gestation age, and female gender of new born were associated with severe respiratory distress in new borns.

Early Intubation and MAS

PEDIATRICS ◽  
1991 ◽  
Vol 87 (2) ◽  
pp. 269-269
Author(s):  
THOMAS E. WISWELL
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Neonatal Intensive Care ◽  
Upper Airway ◽  
Meconium Aspiration Syndrome ◽  
Meconium Aspiration ◽  
The Past ◽  
Early Intubation

In Reply.— I appreciate the comments of Dr Traverse. His opinions and practices closely reflect my own. I, too, am unaware of proven long-term sequelae which can be attributed directly to intubating meconium-stained infants once or twice.1 Additionally, I attempt to remove meconium from the upper airway in all meconium-stained infants, be they vigorous or healthy, or the meconium thick or thin. During the past 5 years, fully one third of infants with the meconium aspiration syndrome (MAS) admitted to our Neonatal Intensive Care Unit had not been intubated and had their tracheae suctioned.

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