There are multiple definitions:

1. vacuum-assisted closure(English)

   • see ulcer treatment
   • Therapeutic approaches

2. ventriculo-arterial coupling(English)

   • ratio of ventricular systolic elastance and effective arterial elastance. Alternatively calculated as the ratio of arterial stiffness, measured by aa-PWV, to myocardial performance, evaluated by STE-derived global longitudinal strain (GLS), i.e., aa-PWV/GLS
   • Ea, Emax, VVC, EF, NVC, ABM, DH, COPD, GLS, PWV, STE
   • Physiology, Cardiology, Ratio-based metric, Hemodynamics
   • https://doi.org…1002/ehf2.12880
   • https://doi.org…cmg.2022.03.024

3. cell-volume activated ion channel(English)

   • activation tends to occur with significant lag-times (tens of seconds to minutes) after the onset of cell volume changes
   • SAC, MEF
   • Channelopathy, Physiology
   • https://www.ncb…les/PMC4742365/

4. vincristine/actinomycin D and cyclophosphamide(English)

   • Chemotherapy

5. voluntary anal contraction(English)

   • may be a diagnostic criterion sufficient for motor incomplete classification in the absence of other qualifying sublesional motor sparing
   • AIS, SCI, SCIMS
   • Gastroenterology, Neuropathy, Classification, Spine (or spinal cord), Injury
   • https://doi.org…pmr.2016.02.012