Abstract
Neonatal cerebral blood flow (CBF) is higher during active sleep (AS) than quiet sleep- (QS) as shown by jugular venous plethysmographic investigations (JVP). State dependency of Vmax-ACA studied by Doppler measurements (DM) remains to get evaluated precisely. During polygraphic studies (duration at least 90 min) registering EEG, ECG, respiration, os-cillometric mean blood pressure (MABP), tcpCO2, and tcpO2 in 2 term and 10 preterm neonates (gestational age 30-40wk, birth weight 1040-2990g) DM (ATL Mk 500) of Vmax-ACA were performed at least every 15 minutes. Values per state were calculated. Results (meanĀ±SD):
Conclusion: Vmax-ACA is higher in AS than in QS (Wilcoxon-test, p<0,05). Like CBF measured by JVP Vmax-ACA by DM increases by 30 % with change from AS to QS. Performing DM actual state has to be considered.
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Jorch, G., Huster, T. STATE DEPENDENT FLUCTUATIONS OF CENTRAL MEAN BLOOD FLOW VELOCITY OF ANTERIOR CEREBRAL ARTERY (Vmax-ACA) IN NEONATES. Pediatr Res 22, 227 (1987). https://doi.org/10.1203/00006450-198708000-00086
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DOI: https://doi.org/10.1203/00006450-198708000-00086