Journal of perinatology : official journal of the California Perinatal Association
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Randomized Controlled Trial Comparative Study Clinical Trial
Heat loss prevention for preterm infants in the delivery room.
Preterm infants are prone to hypothermia immediately following birth. Among other factors, excessive evaporative heat loss and the relatively cool ambient temperature of the delivery room may be important contributors. Most infants <29 weeks gestation had temperatures <36.4 degrees C on admission to our neonatal unit (NICU). Therefore we conducted a randomized, controlled trial to evaluate the effect of placing these infants in polyurethane bags in the delivery room to prevent heat loss and reduce the occurrence of hypothermia on admission to the NICU. ⋯ Placing infants <29 weeks gestation in polyurethane bags in the delivery room reduced the occurrence of hypothermia and increased their NICU admission temperatures. Maintaining warmer delivery rooms helped but was insufficient in preventing hypothermia in most of these vulnerable patients without the adjunctive use of the polyurethane bags.
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Recognition that volume, not pressure, is the key factor in ventilator-induced lung injury and awareness of the association of hypocarbia and brain injury foster the desire to better control delivered tidal volume. Recently, microprocessor-based modifications of pressure-limited, time-cycled ventilators were developed to combine advantages of pressure-limited ventilation with the ability to deliver a more consistent tidal volume. ⋯ More consistent tidal volume, fewer excessively large breaths, lower peak pressure, less hypocarbia and lower levels of inflammatory cytokines have been documented. It remains to be seen if these short-term benefits will translate into shorter duration of ventilation or reduced incidence of chronic lung disease.
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Outcomes analysis in congenital diaphragmatic hernia (CDH) requires a validated risk-adjustment tool. The purpose of this study was to use the Canadian Neonatal Network (CNN) database to validate the Score for Neonatal Acute Physiology, Version II (SNAP-II) for prediction of mortality among CDH infants admitted to a neonatal intensive care unit (NICU), and to compare this to the predictive equation recently developed by the Congenital Diaphragmatic Hernia Study Group (CDHSG). ⋯ SNAP-II is highly predictive of mortality among patients with CDH, and can be used to risk-adjust these patients.
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Successful management of neonatal shock is driven by the etiology and pathophysiology of the cardiovascular compromise. In the clinical practice, however, we only have a limited ability to recognize the etiology of the condition (hypovolemia, myocardial dysfunction or abnormal vasoregulation). ⋯ In addition, although management strategies aimed at improving systemic blood pressure may have been associated with a decrease in mortality in critically ill neonates, there are no prospective data on the effect of these management strategies on morbidity, especially on long-term neurodevelopmental outcome. This paper briefly reviews some of the more frequently encountered clinical presentations of neonatal shock and describes the developmentally regulated cardiovascular responses to the pathophysiology-driven management strategies used in these clinical presentations in the critically ill preterm and term neonate.
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Dedicated neonatal retrieval teams improve delivery room resuscitation of outborn premature infants.
Morbidity related to ineffective resuscitation and stabilization of premature infants is increased when delivery occurs outside tertiary perinatal centers. The regional neonatal transport team received extensive training to expand their scope of practice to include delivery room resuscitation allowing them to attend high-risk deliveries in community hospitals when maternal transfer was not possible. ⋯ The presence of a highly skilled transport team at a high-risk preterm delivery improves the quality of neonatal resuscitation by increasing intubation success rates and achieving earlier vascular access. Neonates resuscitated by dedicated neonatal retrieval teams were less likely to become significantly hypothermic. Although the severity of RDS was similar neonates in the RHT were less likely to receive surfactant.