Page 1574 - Saunders Comprehensive Review For NCLEX-RN

procedure.
2. Preprocedure
a. Assess the client for allergies to dye,
iodine, or seafood.
b. Remove jewelry around the chest area.
c. Review breathing methods that may be
required during testing.
d. Establish an IV access.
e. Administer sedation if prescribed.
f. Have emergency resuscitation
equipment available.
3. Postprocedure
a. Monitor the client for reaction to the
radionuclide.

b. Instruct the client that the

radionuclide clears from the body in
about 8 hours.
c. Encourage increased fluid intake to
clear the dye from the body if there is
no fluid restriction.
L. Computed tomography pulmonary angiography
1. Description
a. The scan visualizes the pulmonary
arteries and blood flow.
b. Its main use is to diagnose pulmonary
embolism and is the preferred method.
c. A contrast dye is injected.
2. Preprocedure: Similar to the V/Q lung scan; in
addition, renal function should be adequate and
dosing of the contrast should be done by a
pharmacist.
3. Postprocedure: Similar to the V/Q lung scan
M. Skin tests: A skin test uses an intradermal injection to help
diagnose various infectious diseases (Box 50-2).
N. Arterial blood gases (ABGs)
1. Description: Measurement of the dissolved oxygen
and carbon dioxide in the arterial blood helps indicate
the acid–base state and how well oxygen is being
carried to the body.
2. Preprocedure and postprocedure care, normal results,
and analysis of results: See Chapter 9.

Avoid suctioning the client before drawing an ABG sample,

because the suctioning procedure will deplete the client’s oxygen,
resulting in inaccurate ABG results.

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