American Association of Critical-Care Nurses (AACN) Certification Practice Test

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Which of the following is a component in assessing the cardiovascular system for SOFA?

Bilirubin level
MAP (mean arterial pressure)
Platelet count
Creatinine level

The correct answer is: MAP (mean arterial pressure)

Assessing the cardiovascular system within the context of the Sequential Organ Failure Assessment (SOFA) score primarily involves evaluating the blood circulation and perfusion to organs, which is crucial in understanding a patient's hemodynamic status. Mean arterial pressure (MAP) is a critical measurement in this assessment as it provides an average blood pressure in a person's arteries during one cardiac cycle. It is essential for ensuring that organs receive adequate blood flow and oxygen. A normal MAP is indicative of adequate perfusion, while a low MAP can suggest insufficient blood flow, potentially leading to organ dysfunction or failure. Thus, MAP directly relates to cardiovascular system functionality, making it a vital component in the SOFA assessment. The other parameters, while significant in assessing overall organ function, are not exclusive to the cardiovascular system. Bilirubin levels are related to liver function, platelet count relates to hematologic status, and creatinine levels are indicative of renal function. Therefore, MAP stands out as the key cardiovascular component in this particular assessment.