At the moment of insertion of a central venous line, the nurse instructs the client to:
A. Cough
B. Swallow
C. Hold the breath and bear down
D. Breathe through the mouth quickly
C
C. At time of insertion, nurse asks client to hold breath and strain. This is a Valsalva maneuver, which increases intrathoracic pressure and prevents entry of air into the catheter. Maneuver is also performed whenever the catheter will be open to air. If client is unable to perform Valsalva maneuver, nurse compresses client's abdomen gently.
A, B, and D would decrease intrathoracic pressure.
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