Which of the following measurements can be used to estimate right ventricular preload?
a. Cardiac output
b. Central venous pressure
c. Pulmonary artery pressure
d. Pulmonary artery occlusion pressure
ANS: B
Central venous pressure (CVP) is used to estimate the right ventricular preload. Pulmonary artery occlusion pressure (PAOP) reflects the preload of the left ventricle. The pulmonary artery pres-sure is generated by the right ventricle ejecting blood into the pulmonary circulation, which acts as a resistance to the output from the right ventricle. The pulmonary artery pressure (PAP) is a measurement of right ventricular afterload. Cardiac output is the amount of blood that the heart pumps out each minute.
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