Anna, 45, presents with lymphadenopathy and an abnormal CBC. The healthcare provider orders flow cytometry. What is the primary reason for using flow cytometry in Anna's case?
To identify and classify leukemic cells
To count red blood cells
To assess kidney function
To measure plasma electrolytes
The Correct Answer is A
A. Flow cytometry is commonly used in the diagnosis and classification of leukemias and lymphomas by analyzing the cellular characteristics of blood or tissue samples.
B. Flow cytometry can be used for cell counting, but it is not the primary reason for using it in Anna's case.
C. Flow cytometry is not typically used to assess kidney function. Other tests such as serum creatinine and urine analysis are more commonly used for this purpose.
D. Flow cytometry does not measure plasma electrolytes. Electrolyte measurements are typically done through blood tests like basic metabolic panels.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. While an increasing respiratory rate may indicate respiratory distress, in the context of a closed head injury, decreasing level of consciousness (LOC) is a more concerning trend as it suggests worsening neurological status.
B. A rising heart rate may indicate pain, anxiety, or physiological stress, but it's not as directly related to the severity of a closed head injury.
C. While decreasing blood pressure can be concerning, especially if it indicates hypovolemic shock, in the context of a closed head injury, the primary concern is neurological status.
D. A decreasing LOC suggests worsening neurological function, which can indicate increased intracranial pressure (ICP) or neurological deterioration.
Correct Answer is D
Explanation
A. Colorectal cancer could be a concern but is not the immediate concern when a patient presents with black, tarry stools, which typically indicate upper gastrointestinal bleeding.
B. Antacids do not typically cause black, tarry stools.
C. Consuming too much fiber may cause changes in stool consistency but is not typically associated with black, tarry stools.
D. Black, tarry stools are often indicative of upper gastrointestinal bleeding, which can be serious and requires immediate medical attention.
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