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Ventilation with external high frequency oscillation around a negative baseline increases pulmonary blood flow after the Fontan operation

Published online by Cambridge University Press:  19 August 2008

Daniel J. Penny ,
Zamir Hayek ,
Peter Rawle ,
Michael L. Rigby  and
Andrew N. Redington
Daniel J. Penny
Affiliation:
Department of Paediatric Cardiology, The Royal Brompton and National Heart Hospital, London
Zamir Hayek
Affiliation:
Department of Paediatric Cardiology, The Royal Brompton and National Heart Hospital, London
Peter Rawle
Affiliation:
Department of Paediatric Cardiology, The Royal Brompton and National Heart Hospital, London
Michael L. Rigby
Affiliation:
Department of Paediatric Cardiology, The Royal Brompton and National Heart Hospital, London
Andrew N. Redington*
Affiliation:
Department of Paediatric Cardiology, The Royal Brompton and National Heart Hospital, London
*
Dr. A.N.Redington, The Deparement of Paediatric Cardiology, The Royal Brompton and National Heart Hospital, Sydney Street, London, SW3 6NP, United Kingdom. Tel. 44-71-352 8121; Fax. 44-71-352 8544.
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Abstract

In this prospective study, pulmonary blood flow was measured using transesophageal Doppler echocardiography to assess whether ventilation by means of external high frequency oscillation around a negative pressure baseline can increase pulmonary blood flow, compared to intermittent positive pressure ventilation, in five patients after the Fontan operation. Pulmonary blood flow was measured when patients were ventilated by means of intermittent positive pressure ventilation and again during equivalent negative pressure ventilation using the external oscillatory technique. When compared to that with intermittent positive pressure ventilation, ventilation using external high frequency oscillation increased pulmonary blood flow by 116 ±61.5% (p=0.013). These results show that ventilation using an external oscillatory device with a mean negative chamber pressure may provide hemodynamic advantages in patients requiring assisted ventilation after the Fontan operation.

Type
Original Articles
Information
Cardiology in the Young , Volume 2 , Issue 3 , July 1992 , pp. 277 - 280
Copyright
Copyright © Cambridge University Press 1992

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References

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