| http://www.w3.org/ns/prov#value | - Depicted in FIG. 1 is an improved syringe and catheter apparatus 10 which embodies principles of the present invention and comprises a pulmonary artery catheter 12, of conventional construction, and a uniquely configured syringe 14 which is utilized in a manner subsequently described to force air (or another, more readily soluble gas such as carbon dioxide) into the catheter 12.
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