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Figure 45-2

An Approach to the Differential Diagnosis of Pts with an Elevated Hemoglobin (Possible Polycythemia) !!flowchart!!

An approach to the differential diagnosis of pts with an elevated hemoglobin (possible polycythemia). AV, atrioventricular; COPD, chronic obstructive pulmonary disease; EPO, erythropoietin.