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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Influence of end expiratory pressure on cerebral blood flow in preterm infants.

The effect of interruption of positive and expiratory pressure (PEEP) on cerebral blood flow velocity (CBFV) and CBF fluctuation (CBFF) in the internal carotid arteries and on heart rate, restlessness and wakefulness has been studied in 17 mechanically ventilated neonates with RDS. A decrease in CBFV was found, but no significant change in CBFF. Multiple regression analysis showed that the decrease in CBFV is less pronounced if the PEEP interruption is accompanied by restlessness. It further appeared that the decrease in CBFV is more pronounced if CBFV is high, the ductus arteriosus is patent, or RDS follows a complicated course. These findings indicate that PEEP supports CBF, probably by a decrease in ductal stealing from the brain. Therewith PEEP protects against cerebral hypoperfusion which is one of the major risks in RDS and immaturity. Furthermore, our findings suggest that the decrease in CBF during PEEP interruption is moderated by restlessness and accentuated by brain damage.[1]

References

  1. Influence of end expiratory pressure on cerebral blood flow in preterm infants. Mullaart, R.A., Hopman, J.C., Rotteveel, J.J., Daniëls, O., Stoelinga, G.B., De Haan, A.F., Kollée, L.A. Early Hum. Dev. (1995) [Pubmed]
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