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Updated: Nov 14, 2025

Transcutaneous Microcirculatory Imaging in Preterm Neonates
Published on: December 31, 2015
Hemodynamic support of the micropreemie: Should hydrocortisone never be left out?
Kenichi Masumoto1, Satoshi Kusuda2
1Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan.
Abstract:
Hemodynamic support for a micropreemie is critically important for preventing mortality and morbidity. An essential consideration in hemodynamic support is insufficient transition from fetal to neonatal circulation and inadequate cortisol production. The first 72 h of life are the most critical, especially when myocardial function is immature and impaired. Therefore, there is a need to determine and adjust preload, myocardial contractility, and afterload appropriately using repeated functional echocardiography. In addition, if myocardial function is not responsive to these attempts at hemodynamic management, hydrocortisone must be used to minimize the suboptimal perfusion burden. Fetal cortisol production is supported by a supply of progesterone from the placenta, and postnatally, adrenal cortisol production in the extremely preterm infant may be inadequate if the infant is placed under excessive stress. This leads to relative adrenal insufficiency which may last for up to several weeks after birth and lead to late-onset circulatory collapse, necessitating treatment with physiological doses of hydrocortisone.
Insights
Hemodynamic support is crucial for micropreemies, addressing circulatory transition and cortisol levels. Early intervention with echocardiography and hydrocortisone can prevent mortality and morbidity in extremely preterm infants.
Area of Science:
- Neonatalogy
- Pediatric Cardiology
- Endocrinology
Background:
- Hemodynamic support is vital for preventing mortality and morbidity in micropreemies.
- Inadequate transition from fetal to neonatal circulation and insufficient cortisol production are key challenges.
- Immature and impaired myocardial function in the first 72 hours of life increases critical risks.
Purpose of the Study:
- To highlight the importance of appropriate hemodynamic management in micropreemies.
- To emphasize the role of functional echocardiography in adjusting circulatory parameters.
- To underscore the necessity of hydrocortisone for managing suboptimal perfusion and relative adrenal insufficiency.
Main Methods:
- Repeated functional echocardiography to assess and adjust preload, contractility, and afterload.
- Administration of hydrocortisone when myocardial function is unresponsive to initial hemodynamic management.
- Monitoring for signs of relative adrenal insufficiency and late-onset circulatory collapse.
Main Results:
- Appropriate adjustment of hemodynamic parameters using echocardiography is essential.
- Hydrocortisone effectively minimizes suboptimal perfusion burden in non-responsive cases.
- Early recognition and treatment of relative adrenal insufficiency are critical for preventing circulatory collapse.
Conclusions:
- Optimizing hemodynamic support through echocardiography and timely hydrocortisone administration is crucial for extremely preterm infants.
- Addressing the transition from fetal to neonatal circulation and potential cortisol inadequacy improves outcomes.
- Hydrocortisone therapy is vital for managing relative adrenal insufficiency and preventing circulatory collapse in this vulnerable population.
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