Abstract
We applied spectral analysis of Doppler echoes to describe cerebral artery characteristics in 14 stable 24-hr-old neonates (M. wt=1016gm;M.gest.age=27 wks) before(DB), 1 min. after 20% increase in FIO2 and ventilation AS), with each catheter passage (S 1-5), and at 1(PS1), 3(PS3), 5(PS5) and 10(PS10) min.after last passage. Mean peak-systolic(SBw) and end-diastolic(DBw) band-widths peak-systolic frequencies(PF), heart rate(HR), mean BP(mBP) and pulse pressure(PP) include:
Correlation coefficients indicate little relation between sonic characteristics of baseline AC flow and HR/mBP. Strong correlation was during AS with mBP, during sequential suctioning with HR/mBP, and during PS with HR. These data suggest when LBW neonates are at rest, AC vascular bed flow is primarily resistive, but becomes reactive during AS, with suctioning, and for considerable time after suctioning. This implies significant change in physical characteristics of AC vascular bed in association with suctioning of stable 24-hr-old LBW neonates.
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Apostolakis, E., Gonzalez, R., Palmer, R. et al. 1326 ROUTINE SUCTIONING AND DOPPLER BLOOD FLOW ECHOES IN LOW BIRTHWEIGHT (LBW) NEONATES. Pediatr Res 19, 331 (1985). https://doi.org/10.1203/00006450-198504000-01350
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DOI: https://doi.org/10.1203/00006450-198504000-01350
