Can we use the sideport of an indwelling sheath introducer to do blood draws?
Mechanically, sheath introducers are a single lumen system indicated for venous access. Clinicians should follow the same techniques as used with any CVC to maintain patency. If the catheter through the valve is withdrawn and the sheath introducer is left indwelling, an obturator must be used to guard against any potential bleeding or air embolism.