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Hypotension and shock in the preterm infant
1McGill University, NICU, Royal Victoria Hospital, 687 Pine Ave W, Montréal, Québec H3A 1A1, Canada. keith.barrington@mcgill.ca
Insights
Hypotension treatment varies widely in preterm infants due to limited evidence. More research is needed to guide interventions for neonatal shock and ensure safe, effective care.
Area of Science:
- Neonatology
- Pediatric Cardiology
- Perinatal Medicine
Background:
- Significant variation exists in treating hypotension in extremely preterm infants.
- Lack of reliable evidence hinders the development of standardized treatment protocols.
- The 'intervention/data imbalance' is pronounced in neonatal hypotension management.
Purpose of the Study:
- To review the neonatal cardiovascular system's unique characteristics.
- To define hypotension and shock in preterm infants.
- To discuss treatment indications and therapies for neonatal hypotension.
Main Methods:
- Literature review focusing on neonatal hypotension and shock.
- Analysis of current treatment practices and evidence base.
- Discussion of diagnostic challenges in assessing perfusion.
Main Results:
- Treatment rates for hypotension range from 16% to 98% in extremely preterm infants.
- Current treatments for hypotension in preterm infants lack strong supporting evidence.
- Assessing adequate tissue perfusion in neonates remains a significant clinical challenge.
Conclusions:
- Evidence-based guidelines are crucial for managing hypotension and shock in preterm infants.
- Treatment of hypotension in infants with adequate perfusion may be unnecessary and harmful.
- Further research is essential to establish effective therapies for neonatal hypotension.
Abstract:
Between 16% and 98% of extremely preterm infants receive treatment for hypotension in the first few days of life. This enormous variation has arisen because of a lack of reliable information to create an evidence base for intervention. This review article provides the unique characteristics of the neonatal cardiovascular system, and addresses the definitions of hypotension and shock in the preterm infant, the indications for treatment and appropriate therapies in individual cases. The treatment of shock and hypotension in the preterm infant may be the area of neonatology where there is the greatest 'intervention/data imbalance'; more babies receive more treatments with less supportive evidence than in virtually any other domain. Treatment of hypotension in infants with good perfusion is probably unnecessary and may be harmful, but the assessment of adequate perfusion remains problematic. Infants with inadequate oxygen delivery to the tissues may benefit from treatment, but which treatments are effective are unknown. It is essential that better evidence be available to create a rational basis for intervention.
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