Guideline-concordant administration of prothrombin complex concentrate and vitamin K is associated with decreased mortality in patients with severe bleeding under vitamin K antagonist treatment (EPAHK study).
BACKGROUND
In vitamin K antagonist (VKA)-treated patients with severe hemorrhage, guidelines recommend prompt VKA reversal with prothrombin complex concentrate (PCC) and vitamin K. The aim of this observational cohort study was to evaluate the impact of guideline concordant administration of PCC and vitamin K on seven-day mortality.


METHODS
Data from consecutive patients treated with PCC were prospectively collected in 44 emergency departments. Type of hemorrhage, coagulation parameters, type of treatment and seven-day mortality mortality were recorded. Guideline-concordant administration of PCC and vitamin K (GC-PCC-K) were defined by at least 20 IU/kg factor IX equivalent PCC and at least 5 mg of vitamin K performed within a predefined time frame of eight hours after admission. Multivariate analysis was used to assess the effect of appropriate reversal on seven-day mortality in all patients and in those with intracranial hemorrhage (ICH).


RESULTS
Data from 822 VKA-treated patients with severe hemorrhage were collected over 14 months. Bleeding was gastrointestinal (32%), intracranial (32%), muscular (13%), and "other" (23%). In the whole cohort, seven-day mortality was 13% and 33% in patients with ICH. GC-PCC-K was performed in 38% of all patients and 44% of ICH patients. Multivariate analysis showed a two-fold decrease in seven-day mortality in patients with GC-PCC-K (odds ratio (OR) = 2.15 (1.20 to 3.88); P = 0.011); this mortality reduction was also observed when only ICH was considered (OR = 3.23 (1.53 to 6.79); P = 0.002).


CONCLUSIONS
Guideline-concordant VKA reversal with PCC and vitamin K within eight hours after admission was associated with a significant decrease in seven-day mortality.
Karim
K
Tazarourte
Bruno
B
Riou
Benjamin
B
Tremey
Charles-Marc
CM
Samama
Eric
E
Vicaut
Bernard
B
Vigué
D000368:Aged; D000369:Aged, 80 and over; D001779:Blood Coagulation Factors / Q000008:administration & dosage*; D015331:Cohort Studies; D004359:Drug Therapy, Combination; D005260:Female; D006470:Hemorrhage / Q000188:drug therapy* / Q000401:mortality*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009026:Mortality / Q000639:trends; D017410:Practice Guidelines as Topic / Q000592:standards*; D011446:Prospective Studies; D016896:Treatment Outcome; D014812:Vitamin K / Q000008:administration & dosage* / Q000037:antagonists & inhibitors*
D001779:Blood Coagulation Factors; D014812:Vitamin K; C025667:prothrombin complex concentrates