Neonatology
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Review Meta Analysis
Surfactant lavage therapy for meconium aspiration syndrome: a systematic review and meta-analysis.
Lung lavage with diluted surfactant has emerged as an innovative treatment for meconium aspiration syndrome (MAS). However, the treatment effect has not yet been fully established. ⋯ Lung lavage with diluted surfactant appeared to improve the clinical outcome in infants with MAS. Given that less than 100 infants were included in the two RCTs, the findings of this study may still be regarded as insufficient evidence. Further research will be needed to confirm the benefit as well as to refine the lavage technique.
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Clinical Trial
Discrepancies between arterial oxygen saturation and functional oxygen saturation measured with pulse oximetry in very preterm infants.
Discrepancies between pulse oximetry saturation (SpO(2)) and arterial saturation (SaO(2)) at low blood oxygenation values have been previously reported with significant variations among instruments and studies. Whether pulse oximeters that attenuate motion artifact are less prone to such discrepancies is not well known. ⋯ SaO(2) was lower on average than SpO(2) with an increased bias at lower saturation. The -2.4 ± 9.2 95% limits of agreement for SaO(2) - SpO(2) in the 85-89% SpO(2) category suggest that SpO(2) and SaO(2) are not interchangeable and intermittent SaO(2) assessments are warranted when the targeted SpO(2) is within this range.
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Comparative Study
Non-invasive cardiac output monitoring in neonates using bioreactance: a comparison with echocardiography.
Non-invasive cardiac output monitoring is a potentially useful clinical tool in the neonatal setting. Our aim was to evaluate a new method of non-invasive continuous cardiac output (CO) measurement (NICOM™) based on the principle of bioreactance in neonates. ⋯ Non-invasive cardiac output monitoring is feasible in neonates. Further validation studies in neonatal animal experimental models and human neonates need to be conducted before routine clinical use.
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Little is known about the effects of hypothermia on the cardiovascular system in term newborns with neonatal encephalopathy. ⋯ The raised, but similar, cTnI values between hypothermia- and nonhypothermia-treated infants indicate similar myocardial damage in both groups. The lower BNP levels during hypothermia treatment suggest that hypothermia after perinatal asphyxia exerts a beneficial effect on cardiac function.
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Conventional mechanical ventilator (CMV) breaths during high-frequency jet ventilation (HFJV) are advocated to recruit and stabilize alveoli. ⋯ Preterm lambs were ventilated effectively with HFJV and 5 CMV breaths/min. CMV breath duration did not alter blood gas exchange, ventilation parameters, ex vivo static lung mechanics or markers of lung injury over a 2-hour study, although consistent trends towards increased inflammatory markers with the longer t(I) suggest greater risk of injury.