Final answer:
Healthcare providers monitor anemia in patients who have had hematopoietic tissue removed by checking the percent saturation of hemoglobin, as it indicates tissue oxygenation levels.
Step-by-step explanation:
Hemoglobin is the protein in red blood cells responsible for transporting oxygen throughout the body. When a client has had part of their hematopoietic tissue (such as a portion of the spleen, which is involved in erythrocyte turnover) removed surgically, it can lead to a decrease in the body's ability to produce red blood cells, and consequently, hemoglobin. This reduction in red blood cell production can result in anemia, as there are fewer cells available to carry oxygen. As a result, healthcare providers closely monitor the percent saturation of hemoglobin or "percent sat" as it is an indicator of how many hemoglobin sites are occupied by oxygen, and thus, reflects the oxygenation status of the patient's tissues.