Which statement about CVP is true?
a. A manometer is used and positioned level to the patient's right atrium.
b. Normal readings are 8 to 12 mm Hg.
c. CVP readings can be taken using a radial artery catheter.
d. Taking a breath can create positive pressure and alter the CVP.
ANS: A
Normal CVP readings range from 2 to 8 mm Hg and respiratory inspiration creates negative pressure. CVP may be monitored with a single-lumen or multilumen radiopaque catheter. A double- or triple-lumen Hickman or Broviac catheter is used most commonly.
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