Systems-Based Practice
Core concepts
Systems-based practice examines how hematology care operates within teams, institutions, and payers. Key topics include transfusion medicine stewardship (blood utilization committees, restrictive thresholds), anticoagulation clinics, tumor boards, multidisciplinary care, patient safety (specimen labeling, wrong-blood-in-tube errors), and care transitions. Understanding cost, access, and resource allocation-especially for expensive therapies like CAR-T and gene therapy-is increasingly tested.
Traps
- Ignoring restrictive transfusion thresholds (typically hemoglobin 7–8 g/dL in stable patients).
- Missing near-miss reporting as a safety tool.
- Failing to recognize that a wrong-blood-in-tube error is a patient safety event, not a laboratory inconvenience.
- Overlooking insurance and access barriers that delay therapy.
- Assuming tumor board decisions are binding rather than advisory.
Worked example
A stable hospitalized patient with hemoglobin 7.4 g/dL and no symptoms: restrictive transfusion strategy suggests transfusion is not indicated. Document symptoms and clinical context; avoid reflexive transfusion and engage the stewardship team.
Rule of thumb
Before ordering blood or an expensive therapy, ask: what is the indication, what is the alternative, and who else needs to be at the table?