There are multiple definitions:

1. ventricular assist device(English)

   • ECMO, IABP, LVAD, MCS, pVAD, TAH
   • Cardiology, Bioengineering, Therapeutic approaches

2. vascular access device(English)

   • Vascular disease

3. vitamin A deficiency(English)

   • triggers many diseases and is a worldwide nutrition problem
   • LRAT, SHR, VA, VAN, WKY
   • Vitamin, Nutrition
   • https://doi.org…63.2020.1833023

4. visual acuity disturbance(English)

   • presence of visual impairment
   • BCVA, CCT, CDVA, ERM, LASIK, OCT, PSBT, PTA, RSBT, VAD
   • Ophthalmology
   • https://doi.org…3174/ajnr.A5394

5. vascular area density(English)

   • VSD
   • Atherosclerosis /atherogenic
   • https://doi.org…sis.2023.117196

6. Voronoi area distribution(English)

   • may refer to polycrystalline material
   • Communication, Statistics
   • https://doi.org…OC.2021.3061778
   • https://communi…s/-/m/t/1620190