Why should the pulmonary catheter balloon only be inflated long enough to obtain a wedge pressure reading?
To decrease the risk of infection
To improve oxygenation in the lungs
To prevent damage to the pulmonary artery
To ensure accurate measurement of cardiac stroke volume index
The Correct Answer is C
A. Infection risk is more related to catheter insertion and maintenance, not balloon inflation time.
B. Inflating the balloon does not affect oxygenation directly.
C. Prolonged inflation of the pulmonary artery catheter balloon can obstruct blood flow and lead to pulmonary artery rupture or infarction. Therefore, it should be inflated only briefly to obtain an accurate wedge pressure reading, then deflated immediately.
D. Cardiac stroke volume index is calculated using other hemodynamic parameters, not wedge pressure specifically.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. 9% represents the total surface area of one arm (anterior and posterior combined), not both arms.
B. 12% is not a correct calculation based on the Rule of Nines.
C. 36% represents a much larger area, such as the entire trunk (anterior and posterior), not just the arms.
D. According to the Rule of Nines, each arm accounts for 9% of total body surface area (4.5% anterior + 4.5% posterior). Therefore, both arms (anterior and posterior) equal 18% total
Correct Answer is D
Explanation
A. Inserting a urinary catheter is important for monitoring fluid status but is not the immediate priority.
B. Drawing blood for labs is necessary but not the first concern in a potentially life-threatening situation.
C. Pain management is important, but airway assessment takes precedence.
D. Inspecting the mouth for signs of inhalation injury is the priority because facial burns increase the risk of airway compromise. Airway management is the first priority in emergency burn care to prevent respiratory failure.
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