The kinetic model focuses on disorders affecting RBC lifespan, including: production, destruction (consumption or hemolysis), and loss
Another common schema is based on the morphology of red cells (microcytic, normocytic, macrocytic)
Bleeding disorders can contribute to anemia from other causes
Weakness, fatigue, sob, doe
Degree of sx based on acuity of anemia (i.e. acute--> more symptoms), other co-morbid dz processes (e.g. anemia superimposed on another illness like CHF will generate more symptoms at higher HgB), general activity level (i.e. if relatively inactive, will have fewer symptoms).
Physical Exam Findings
Degree of VS abnormality based on acuity and ability to compensate
Other findings based on etiolgoy (e.g. blood in stool if GI bleeding)