Blood coagulation parameters after intravitreal injection of aflibercept in patients with neovascular age-related macular degeneration

Int Ophthalmol. 2018 Dec;38(6):2397-2402. doi: 10.1007/s10792-017-0741-x. Epub 2017 Oct 12.

Abstract

Purpose: The aim of this study was to evaluate the effect of intravitreal injection of aflibercept (IVA) on blood coagulation tests in neovascular age-related macular degeneration (AMD) patients.

Methods: Thirty-four patients with neovascular AMD (study group) and 32 healthy individuals (control group) were enrolled. Prothrombin time (PT) and activated partial thromboplastin time (aPTT) were measured at different times in patients with neovascular AMD.

Results: The levels of PT and aPTT after IVA were decreased at 1 month after the first injection and 1 month after the second injection compared to the baseline measurement in the study group.

Conclusions: IVA may cause a decrease in the levels of PT and aPTT at 1 month after the first injection and 1 month after the second injection although these results are not statistically significant in our study.

Keywords: Activated partial thromboplastin time; Aflibercept; Age-related macular degeneration; Arterial thrombotic events; Prothrombin time.

Publication types

  • Observational Study

MeSH terms

  • Aged
  • Angiogenesis Inhibitors / therapeutic use*
  • Blood Coagulation / physiology*
  • Female
  • Fluorescein Angiography
  • Humans
  • Intravitreal Injections
  • Male
  • Middle Aged
  • Partial Thromboplastin Time
  • Prospective Studies
  • Prothrombin Time
  • Receptors, Vascular Endothelial Growth Factor / therapeutic use*
  • Recombinant Fusion Proteins / therapeutic use*
  • Tomography, Optical Coherence
  • Vascular Endothelial Growth Factor A / antagonists & inhibitors
  • Visual Acuity
  • Wet Macular Degeneration / drug therapy*
  • Wet Macular Degeneration / physiopathology*

Substances

  • Angiogenesis Inhibitors
  • Recombinant Fusion Proteins
  • VEGFA protein, human
  • Vascular Endothelial Growth Factor A
  • aflibercept
  • Receptors, Vascular Endothelial Growth Factor