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The Successful Immediate Neonatal Transition to Extrauterine Life
Alexandra Michel1, Nancy K Lowe1
11 College of Nursing, University of Colorado, Denver, CO, USA.
Insights
The neonatal transition to extrauterine life involves complex physiological changes in respiration, circulation, and metabolism within hours of birth. Further research is needed for noninvasive assessment methods to monitor this crucial newborn adaptation.
Area of Science:
- Neonatal physiology
- Perinatal adaptation
- Newborn health
Background:
- The neonatal period is characterized by rapid physiological adjustments to extrauterine life.
- Successful transition ensures the newborn's survival and long-term health.
- Understanding these processes is critical for neonatal care and clinical practice.
Purpose of the Study:
- To define and describe the physiological processes of successful neonatal transition to extrauterine life.
- To identify and review methods for assessing the newborn's transition status.
- To provide a comprehensive overview of current knowledge on this critical developmental phase.
Main Methods:
- A comprehensive literature search was conducted across major databases (CINAHL, Embase, Web of Science, Google Scholar).
- Keywords included neonate, transition, respiratory, cardiac, metabolic, and assessment.
- A systematic review of diverse study types (RCTs, observational studies, reviews) in English and German was performed.
Main Results:
- Key findings regarding normal respiratory, cardiovascular, and metabolic transitions are summarized.
- Underlying factors crucial for successful adaptation are detailed.
- Common assessment approaches for neonatal transition are reviewed and discussed.
Conclusions:
- Successful neonatal transition typically occurs within 1-3 hours post-birth, but some adaptive failures can manifest up to 24-48 hours later.
- Current evidence highlights the need for further research into feasible, noninvasive methods for assessing neonatal transition.
- Developing such methods is essential for timely and effective neonatal care.
Purpose:
To define and describe the processes underlying the successful neonatal transition to extrauterine life and methods to assess the transition.
Method:
Cumulative Index to Nursing and Allied Health Literature (CINAHL), Embase, Web of Science, and Google Scholar were searched using a combination of the key words neonate, neonatal, newborn, transition, respiratory OR pulmonary, cardiac, metabolic, pH, umbilical cord, and assessment. Articles in English and German were reviewed. The final sample of articles consisted of one randomized controlled trial, 30 observational studies using human neonates, one observational study using rabbit pups, one secondary analysis, three systematic reviews, and 23 review articles.
Major Findings:
The pertinent findings in regard to normal events in the respiratory, cardiovascular, and metabolic transitions are reviewed and summarized. We address the underlying factors necessary for the transition to extrauterine life, specify the consequences of a successful transition, and review common assessment approaches.
Conclusion:
Available evidence indicates that the successful immediate transition to extrauterine life should be completed within 1-3 hr after birth, though some adaptive processes can fail as late as 24-48 hr after birth. Further research is necessary to identify a feasible, easily used, noninvasive method to assess the status of a neonate's transition to extrauterine life.
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