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Observational Study
. 2020 Oct 29;15(10):e0241450.
doi: 10.1371/journal.pone.0241450. eCollection 2020.

Extent of arterial calcification by conventional vitamin K antagonist treatment

Affiliations
Observational Study

Extent of arterial calcification by conventional vitamin K antagonist treatment

Selma Hasific et al. PLoS One. .

Abstract

Background and aims: Vitamin K antagonists (VKA) remain the most frequently prescribed oral anticoagulants worldwide despite the introduction of non-vitamin K antagonist oral anticoagulants (NOAC). VKA interfere with the regeneration of Vitamin K1 and K2, essential to the activation of coagulation factors and activation of matrix-Gla protein, a strong inhibitor of arterial calcifications. This study aimed to clarify whether VKA treatment was associated with the extent of coronary artery calcification (CAC) in a population with no prior cardiovascular disease (CVD).

Methods: We collected data on cardiovascular risk factors and CAC scores from cardiac CT scans performed as part of clinical examinations (n = 9,672) or research studies (n = 14,166) in the period 2007-2017. Data on use of anticoagulation were obtained from the Danish National Health Service Prescription Database. The association between duration of anticoagulation and categorized CAC score (0, 1-99, 100-399, ≥400) was investigated by ordered logistic regression adjusting for covariates.

Results: The final study population consisted of 17,254 participants with no prior CVD, of whom 1,748 and 1,144 had been treated with VKA or NOAC, respectively. A longer duration of VKA treatment was associated with higher CAC categories. For each year of VKA treatment, the odds of being in a higher CAC category increased (odds ratio (OR) = 1.032, 95%CI 1.009-1.057). In contrast, NOAC treatment duration was not associated with CAC category (OR = 1.002, 95%CI 0.935-1.074). There was no significant interaction between VKA treatment duration and age on CAC category.

Conclusions: Adjusted for cardiovascular risk factors, VKA treatment-contrary to NOAC-was associated to higher CAC category.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Selection of study population.
Fig 2
Fig 2. Treatment duration of VKA and NOAC.
AC, Anticoagulants.
Fig 3
Fig 3
Distribution of coronary artery calcium (CAC) score categories in participants with various durations of VKA treatment according to all subjects (A) and three age groups: (B) age <60 years, (C) age 60–69 years and (D) age ≥70 years. P-values for CAC score category distributions by VKA treatment duration were calculated by chi-square test: A) p<0.001, B) p<0.001, C) p = 0.047 and D) p = 0.064.

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