BACKGROUND: Febrile neutropenia (FN) is a serious and potentially life-threatening condition that may develop in patients with cancer who receive myelosuppressive chemotherapy. The risk of mortality from FN is not well characterized in current clinical practice. METHODS: Patients with cancer who were receiving chemotherapy in clinical practice were identified from a large US healthcare claims database, and mortality was confirmed using the National Death Index. Patients with FN had their propensity scores matched within tumor types of interest (non-Hodgkin lymphoma and breast, lung, colorectal, and ovarian cancers) to patients who did not experience FN. Study endpoints of overall mortality (anytime during follow-up), early mortality (during the first 12 months of the first chemotherapy course), and hospitalization were examined using univariate and multivariate techniques. RESULTS: Matched FN and control groups each included 5990 patients, and the average follow-up for both groups was 17.6 months. Crude incidence rates of early mortality were significantly higher for patients with FN compared with controls for all tumor types. Proportional hazards regression demonstrated a significant increase in the risk of overall and early mortality in patients with FN compared with controls (hazard ratio [HR], 1.15 [95% confidence interval, 1.02-1.29] and HR, 1.35 [95% confidence interval, 1.09-1.67], respectively). CONCLUSIONS: The adjusted risk of mortality in patients who experienced FN was at least 15% higher than in comparably matched patients without FN, supporting the inference that infectious complications because of neutropenia resulting from myelosuppressive chemotherapy are clinically important.

The occurrence of FN in cancer patients receiving chemotherapy results in greater healthcare resource utilization and costs, with FN patients who die accounting for the greatest healthcare costs. Most FN patients experience at least one outpatient FN encounter, and the total cost of treatment for FN continues to be high.

Studies reported low incidence of GI bleeding events with use of OTC ibuprofen. Few published studies that specifically investigated OTC ibuprofen use were identified. Varying methodologies and definitions of exposure and outcomes prevented direct comparison of many results. Only studies that used the methods herein described were identified. Further research evaluating the risk of GI bleeding events in patients taking OTC-specific ibuprofen use may be useful.

Bovine thrombin has been used for more than 60 years as a surgical hemostat and sealant. Rare postsurgical events have been attributed to antibovine thrombin immunoglobulins cross-reacting with human homologs. In a literature review of 37 papers reporting safety outcomes in surgical patients, we extracted each paper for a quantitative measurement of bovine thrombin exposure and coagulopathic outcomes. We found that 59.5% of papers documented the commercial source of bovine thrombin and only 19% provided an estimate of exposure in units. Conventional tests for hypocoagulation were common (86%); however, only 9% of papers confirmed this inhibition as an isolated antibody. In addition, only 9% of papers cited a specific biomarker for thrombosis.

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