| http://www.w3.org/ns/prov#value | - Thus, for example, when the intravenous tubing is coupled to a catheter situated on the downstream side of the pump, and this catheter becomes accidentally opened to ambient atmosphere, the pressure differential between ambient atmosphere and the vascular system in which the distal tip of the catheter resides (particularly in the chest and/or abdomen) is such as to cause air to be sucked through t
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