Volume 76, Issue 2 pp. 239-247
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The Effects of Intermittent Positive Pressure Ventilation on Cerebral Arterial and Venous Blood Velocities in the Newborn Infant

F. COWAN

F. COWAN

Department of Neonatal Paediatrics, Ullevål Hospital, Oslo, and the Institute of Physiology, University of Oslo, Norway

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M. THORESEN

Corresponding Author

M. THORESEN

Department of Neonatal Paediatrics, Ullevål Hospital, Oslo, and the Institute of Physiology, University of Oslo, Norway

(M.T.) Karolinska Institute The Nobel Institute for Neurophysiology Box 60400 S- 104 01 Stockholm SwedenSearch for more papers by this author
First published: March 1987
Citations: 44

Abstract

ABSTRACT. Cerebral arterial and venous blood velocities were measured using pulsed Doppler ultrasound in 25 newborn infants requiring intermittant positive pressure ventilation (IPPV). The aim was to investigate whether these velocities altered in relation to the peak inflation pressure (PIP) used. Continous recordings were made on the superior sagittal sinus and an intracranial artery both at the clinically prescribed PIP, and while this was altered in steps. A majority of the infants had, at some stage of their illness, variations in their venous and arterial velocities in phase with IPPV and related to the PIP used. These variations could be reduced by lowering the PIP. This was done in 5 infants whilst we were still able to maintain adequate ventilation.

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