Study Objectives: Reversal of warfarin-induced anticoagulation using prothrombin complex concentrate (PCC4) is more rapidly achieved than with traditional methods such as fresh frozen plasma (FFP). In many rural facilities the availability of both FFP and PCC4 has been limited. A tertiary hospital instituted a program to provide PCC4 to rural sites using an air transport team and pharmacy exchange. We hypothesized that increasing accessibility of PCC4 would shorten time to INR reversal.
Methods: This was a retrospective study with the primary outcome being time to INR reversal (INR ≤1.6) and time to PCC4 administration from outside hospital admission. Active warfarin prescription, transfer to a tertiary facility, and administration of anticoagulation reversal between January 2013 and December 2020 were required for inclusion. Patients were grouped by dates before and after implementation of the program in August 2016. Linear regressions were performed to determine the effect of the variable and INR reversal methods on time to INR reversal as well as time to PCC4 administration. Time to event analysis was used to analyze the primary outcome between comparison groups. values of less than 0.05 were considered significant.
Results: Chart review identified 189 patients: 56 within the pre-implementation group and 133 in the post- implementation group. Statistics were compared between these two groups. The post-implementation group had a shorter time to INR reversal (median 9.97 hours) compared with the pre-implementation group (median 14.58 hours, = 0.00004). Time to PCC4 administration was also significantly decreased ( = 0.023). No statistically significant differences were found for hospital survival or 30-day mortality.
Conclusion: In rural hospitals, increasing availability of PCC4 using air medical transport along with a medication exchange program significantly reduces time to PCC4 administration in warfarin anticoagulated patients.
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