Quality improvement program in radiation oncology: understanding patient hospitalizations, treatment breaks, and weight loss in patients receiving radiotherapy.

INTRODUCTION: The reporting of adverse effects is an integral aspect of a hospital quality improvement (QI) program with the goal of improving care for current and future patients. We report the results of our experience tracking patient hospitalizations, treatment breaks, and weight loss in patients receiving radiotherapy as part of a departmental QI program. METHODS: In 2014, the Center for Cancer Care at Exeter hospital developed a departmental quality initiative to track adverse outcomes in a population of patients receiving radiation therapy. Criteria for inclusion in this initiative included: treatment break ≥3 days, hospitalization either while on treatment of within 2 weeks of treatment, death within 2 weeks of treatment, or weight loss of ≥10%. Patients included on this registry were reviewed at regularly scheduled departmental QI meetings, where solutions for improvement were discussed. RESULTS: Ninety-one patients were identified as having an event that meet the above-mentioned criteria. Forty-three patients were receiving concurrent chemotherapy (47.2%) Fifty-four (54.9%) patients had toxicity directly attributable to their treatment. Sixty-five patients (71.4%) were treated with curative intent. Nineteen patients (21.1%) died either during the course of radiotherapy, or within two weeks of completion of treatment. Advanced age was significantly associated with inferior overall and disease free survival in this analysis, HR 1.030 (1.006-1.054) p = 0.0125, and HR 1.034 (1.008-1.061) p = 0.010 respectively. CONCLUSION: We believe that this protocol to track events has been helpful in making practice changes in our department. Our results suggest that elderly patients who experience qualifying event are at increased risk of death, and providers should be cognizant of this finding. Future QI projects can seek to better understand how such changes have resulted in improvements in patient care.

The practical application of chimerism analyses in allogeneic stem cell transplant recipients: blood chimerism is equivalent to marrow chimerism.

BACKGROUND: Chimerism defines the amount of donor versus recipient hematopoiesis following allogeneic stem cell transplant (SCT). PCR-based analyses of short tandem repeats (STRs) are commonly used and are accurate and applicable to allogeneic transplant recipients. These analyses are performed on blood and marrow aspirates, but it is unknown if analyses of both are required. We performed a retrospective analysis of 42 consecutive adult allogeneic SCT recipients at our institution to determine if both sample types are needed. METHODS: Chimerism status was determined by multiplex PCR and capillary electrophoresis of STRs. Analyses were performed at 30, 60, and 90days after SCT on both unfractionated blood and unfractionated marrow aspirate. RESULTS: PCR analyses of STRs for chimerism performed on unfractionated blood highly correlated with results obtained using unfractionated marrow aspirates at 30, 60, or 90days following transplant (p<0.0001 for each time point). Overall and relapse-free survival of patients experiencing full donor chimerism was not statistically different from patients demonstrating mixed chimerism at days 30, 60, and 90 following SCT. CONCLUSIONS: PCR-based chimerism analyses on blood provide similar information as marrow aspirate analyses. These are unique results suggesting that chimerism analyses may be assessed on peripheral blood alone.