Adult Patients Undergoing Open Heart Replacement of the Aortic Valve for Aortic Stenosis or Insufficiency Clinical Trial
Official title:
Elimination of CO2-insufflation-induced Hypercarbia in Open Heart Surgery Using a Separate Reservoir for Suction of Blood From the Open Surgical Wound
The study aim was to evaluate if an additional separate venous reservoir eliminates CO2-insufflation induced hypercapnia and keeps sweep gas flow of the oxygenator constant during open heart surgery.
Background: CO2-gas insufflation is used for continuous de-airing during open heart surgery.
The study aim was to evaluate if an additional separate venous reservoir eliminates
CO2-insufflation induced hypercapnea and keeps sweep gas flow of the oxygenator constant.
Methods: A separate small reservoir are used during CPB in addition to a standard large
venous reservoir. The small reservoir receive drained wound blood and CO2-gas continuously
via a suction drain (1 L/min) and handheld suction devices from the open surgical wound.
CO2-gas is insufflated via a gas-diffuser in the open surgical wound at 10 L/min. During
cross-clamping, gas and blood are either continuously drained to the standard large venous
reservoir or not, every 5 minutes after steady state of PaCO2 is observed, after adjustment
of sweep gas flow as necessary. Mean values for each setup (2-4 times) for each patient will
be analyzed with Wilcoxon rank-sum test.
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