Issue |
J Extra Corpor Technol
Volume 20, 1988
Proceedings of AmSECT’s 26th International Conference
|
|
---|---|---|
Page(s) | 11 - 13 | |
DOI | https://doi.org/10.1051/ject/198820S011 | |
Published online | 25 August 2023 |
Original Article
A New Approach in the Regulation of the Partial Pressure in Cardiotomy Suction During Open Heart Surgery
Department of Cardiology, University Hospital, University of Limburg, Maastricht, The Netherlands
* Direct communications to: Willem RM Dassen, PhD, Dept. of Cardiology, University of Limburg, 6200 MD Maastricht, The Netherlands.
During open heart surgery, the drainage of cardiotomy is sometimes interrupted by occlusion of the suction tip or vent against cardiac or thoracic tissue, causing a rise in partial vacuum in the suction system, which may lead to increased hemolysis. Mechanical safety valves can be used to avoid this. However the use of such valves is limited for negative pressure regulation on fixed levels. In order to be able to control the existing or created pressure, we developed an electronic system capable of monitoring and adjusting the pressures to a selected level. When this level is reached, and electromagnetic valve is opened, titrating air into the system until the partial pressure has dropped to 80% of the preselected value. This electronic approach also offers the possibility to make use of the signal as a feedback to control the vacuum, by controlling the rotations of the roller pump. Furthermore, the signal can be used for trend registration or application in hemodynamic calculations. This vacuum regulation system enables the perfusionist to minimize possible destruction of blood elements in the cardiotomy suction system and to devote his attention to the physiological state of the patient rather than to the equipment.
© 1988 AMSECT
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.