Which of the following is a primary purpose of hemodynamic monitoring?
To measure respiratory rate and lung function
To evaluate kidney function and urine output
To assess the functioning of the cardiovascular system
To assess acid-base levels in the blood
The Correct Answer is C
A. Measuring respiratory rate and lung function is part of respiratory assessment, not the focus of hemodynamic monitoring.
B. Kidney function and urine output are influenced by hemodynamics but are not directly measured by hemodynamic monitoring.
C. Hemodynamic monitoring is primarily used to assess cardiovascular function, including parameters like cardiac output, preload, afterload, and systemic vascular resistance. It helps guide fluid and medication therapy in critically ill patients.
D. Acid-base status is assessed via arterial blood gases, not hemodynamic monitoring.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
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.
Correct Answer is D
Explanation
A. Superior vena cava pressure reflects right atrial pressure, not wedge pressure.
B. The aorta has its own pressures, unrelated to wedge pressure.
C. Right atrial pressure is measured separately, not via wedge pressure.
D. Pulmonary artery wedge pressure (PAWP) reflects the pressure in the left atrium and indirectly estimates left ventricular end-diastolic pressure, indicating left heart preload.
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