@article {3604, title = {Cerebral oxygenation with different nasal continuous positive airway pressure levels in preterm infants.}, journal = {Arch Dis Child Fetal Neonatal Ed}, volume = {100}, year = {2015}, month = {2015 Mar}, pages = {F165-8}, abstract = {

OBJECTIVES: This study evaluates the effect of varying nasal continuous positive airway pressure (NCPAP) level on cerebral blood flow (CBF) and oxygenation in preterm infants.

METHODS: Oxy-haemoglobin (HbO2) and total haemoglobin (HbTot), as CBF estimates, and the ratio between HbO2 and HbTot (HbO2/HbTot), as cerebral oxygenation estimate, were assessed by near-infrared spectroscopy in 26 stable preterm newborns at a postmenstrual age between 26 and 33 weeks. Baseline HbO2, HbTot and HbO2/HbTot values were initially collected with NCPAP at 5 cm H2O and then compared with values obtained with NCPAP levels at both 3 and 8 cm H2O.

RESULTS: Compared with 5 cm H2O, cerebral HbO2, HbTot and HbO2/HbTot remained unchanged both after increasing (to 8 cm H2O) and decreasing (to 3 cm H2O) the NCPAP level. This result was observed both in regional areas (24 sites) and in the overall monitored area (frontal and parietal cortex). Compared with 8 cm H2O, peripheral oxygen saturation significantly decreased at 3 cm H2O (p=0.021). Heart rate did not change.

CONCLUSIONS: No differences in CBF and cerebral oxygenation were observed with NCPAP levels in the range 3-8 cm H2O despite a decrease in peripheral oxygenation with 3 cm H2O.

}, keywords = {Cerebrovascular Circulation, Continuous Positive Airway Pressure, Female, Hemoglobins, Humans, Infant, Newborn, Infant, Premature, Intensive Care, Neonatal, Male, Nasal Cavity, Oxygen, Oxygen Consumption, Oxyhemoglobins, Spectroscopy, Near-Infrared}, issn = {1468-2052}, doi = {10.1136/archdischild-2014-306356}, author = {Bembich, Stefano and Travan, Laura and Cont, Gabriele and Bua, Jenny and Strajn, Tamara and Demarini, Sergio} }