Cerebral oxygenation is stable in preterm infants transitioning to heated humidified high-flow nasal cannula therapy.

Aim: To assess cerebral oxygenation in premature infants who are transitioning from nasal continuous positive airway pressure (nCPAP) to heated humidified high-flow nasal cannula therapy (HFNC).

Methods: A prospective observational study done in a single-centre neonatal intensive care unit (NICU). Regional cerebral oxygen saturations (RcSO ) were measured using frequency-domain near-infrared spectroscopy (FD-NIRS) in very low birthweight (VLBW) premature infants born at <32 weeks transitioning from nCPAP to HFNC.

Cerebral blood flow velocities and cerebrovascular resistance in normal-term neonates in the first 72 hours.

Aim: To determine the range of cerebral blood flow velocities (CBFVs) and Doppler indices of cerebrovascular resistance in normal-term neonates as a baseline for a study of hypoxic-ischaemic encephalopathy.

Methods: The CBFVs, resistive index (RI) and pulsatility index (PI) were measured in the anterior and middle cerebral arteries (ACA and MCA) of 38 normal neonates.

Results: The mean peak systolic, end diastolic and time-averaged velocities (PSV, EDV and TAV) were 36.