• Be-Ling Chiou, Chin-Chin Ho, and Chen-Chang Yang.
• International Health Program, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC.
• J Chin Med Assoc. 2020 Aug 1; 83 (8): 784-790.

BackgroundCancer is one of the leading causes of death worldwide. Despite the rapid evolution of cancer treatment, chemotherapy remains the mainstay in the management of cancer. Chemotherapy can result in various adverse drug reactions (ADRs), which may lead to hospitalization and even life-threatening side-effects. Hematologic ADRs are among the most severe forms of ADR following chemotherapy, as they generally lead to hospitalization. It is important to realize the predictors and outcome of hematologic ADRs in cancer patients.MethodsWe conducted a hospital-based case-control study to include all the cancer patients who were hospitalized to receive chemotherapy in Taipei Veterans General Hospital during 2013. Among them the patients rehospitalized after chemotherapy due to neutropenia, leucopenia, or pancytopenia were identified as the study group. Control subjects consisted of hospitalized cancer patients who did not display the aforementioned ADRs. The study and control groups were numbered in the ratio of 1:4 and were age- and gender-matched. Their demographic and clinical characteristics were collected through chart review. Determinants of hematologic ADRs were then analyzed.ResultsDuring the study period, we collected a total of 64 patients into the study group and 256 as control subjects. The mean length of hospitalization was 11 days in the study group of patients, which was 5 days longer than that in the control group (p < 0.001). Predictors of hematologic ADR-related hospitalization included history of hematologic ADRs, hypertension, cisplatin treatment, and a Charlson comorbidity score of 2 to 3.ConclusionSevere outcomes of hematologic ADRs may increase healthcare costs and decrease patient productivity. Therefore, the determinants of ADR-related hospitalization identified in this study may help improve the quality of healthcare for cancer patients.

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