There are multiple definitions:

1. stroke volume index(English)

   • also denoted as stroke index (SI) or SVi
   • BSA, SV, PP, Zva, SI, AS, AVA, AVAi, LVEF, NF, PLF, SAVR, TAVR, EDV, ESV, HFsnEF
   • Hemodynamics, Difference based metric, Cardiology, Aging, Woman /female
   • https://doi.org…adv.2024.100853
   • https://doi.org…dvan.00140.2017
   • https://doi.org…093/cvr/cvae243

2. slow virus infection(English)

   • SVD
   • Virology

3. sphericity volume index(English)

   • actual LV volume divided by the volume of a sphere with LV length as diameter
   • LV, SDI
   • Cardiology
   • https://doi.org…jnl-2016-310052

4. systemic viral infection(English)

   • Risk factor, Virology

5. severe visual impairment(English)

   • e.g. in patients with facial nerve palsy
   • FNP
   • Ophthalmology, Neuropathy
   • https://doi.org…30.2022.2090013