Certified Flight Registered Nurse (CFRN) Practice Exam (2)

The correct choice identifies that increased RBC production is not one of the primary categories of common anemias. Anemia typically occurs when there is a reduction in the number of red blood cells (RBCs) or their function, leading to decreased oxygen delivery throughout the body. The categories of anemia can be broadly classified into three primary mechanisms: 1. **Increased RBC destruction** refers to hemolytic anemias, wherein RBCs are destroyed at a rate that exceeds their production. This includes conditions such as autoimmune hemolytic anemia or sickle cell disease. 2. **Decreased RBC production** occurs when the bone marrow fails to produce sufficient RBCs. This can be due to various factors including nutritional deficiencies (like iron, vitamin B12, or folate), aplastic anemia, or chronic disease. 3. **Acute/chronic blood loss** involves the loss of blood either suddenly (acute) or over time (chronic). This loss reduces the number of circulating RBCs and can stem from conditions like gastrointestinal bleeding or heavy menstrual periods. Increased RBC production is not considered a category of anemia because, if production were increased, it would generally not lead to anemia, rather it would help counteract any existing deficit in RBC