University of Massachusetts Medical School Faculty Publications
Title
Implications of an inpatient warfarin dosing nomogram on safety outcomes post-discharge
UMMS Affiliation
Meyers Primary Care Institute; Department of Medicine, Division of Cardiovascular Medicine; Department of Medicine
Publication Date
2017-05-01
Document Type
Article
Disciplines
Cardiology | Pharmacy and Pharmaceutical Sciences
Abstract
Many hospitals have implemented warfarin dosing nomograms to improve patient safety. To our knowledge, no study has assessed the impact inpatient warfarin initiation has in both medical and surgical patients, on safety outcomes post discharge. To evaluate the impact of a suggested institutional nomogram for the initiation of warfarin, the primary endpoint was the incidence of bleeding throughout follow up. Secondary endpoints included the composite of INR changes > /=0.5/day and INR > 4. Patients were followed for a period of 2 weeks post-discharge. The composite endpoint was evaluated for an effect on reaching therapeutic INR, time to reach therapeutic INR, and bleeding events throughout follow up. A single center retrospective study comparing the safety of adherence vs. non-adherence to a warfarin nomogram. A total of 206 patients were included, 73 patients in the nomogram adherence vs. 133 in the nonadherence arm. There was no difference in the proportion of patients who bled throughout the follow up period, adherence 9.6% vs. nonadherence to the nomogram 13.5%, p = 0.407. There was however a statistical difference in the mean total number of bleeding events, 0.096 (7/73) in the adherence vs. 0.158 (21/133) in the non-adherence arm, p = 0.022. There was also no difference in the composite endpoint, 19.2% in the adherence vs. 28.6% in the non-adherence arm p = 0.180. A positive correlation between the inpatient composite and risk of bleeding throughout follow up was noted. The findings of this study support adherence to the nomogram as opposed to non-adherence.
Keywords
Anticoagulation, Inpatient, Nomograms, Safety, Warfarin
DOI of Published Version
10.1007/s11239-016-1462-0
Source
J Thromb Thrombolysis. 2017 May;43(4):454-462. doi: 10.1007/s11239-016-1462-0. Link to article on publisher's site
Related Resources
Journal/Book/Conference Title
Journal of thrombosis and thrombolysis
PubMed ID
27981490
Repository Citation
Chamoun, Nibal; Macias, C. Gabriela; Donovan, Jennifer L.; Klugman, Robert A.; Gore, Joel M.; Salameh, Pascale; and Tran, Maichi T., "Implications of an inpatient warfarin dosing nomogram on safety outcomes post-discharge" (2017). University of Massachusetts Medical School Faculty Publications. 1186.
https://escholarship.umassmed.edu/faculty_pubs/1186