There are multiple definitions:

1. visit-to-visit variability(English)

   • variability of blood pressure (BP) across outpatient visits is frequently dismissed as random fluctuation around a patient's underlying BP
   • BP, BPV, CHD, CVD, MI, SBP, ASV, DBP, JIS, MetS
   • Variability / oscillation, Hypertension, Risk factor, Metabolism
   • https://doi.org/10.7326/M14-2803
   • https://doi.org…55/2023/8156084

2. venous volume variation(English)

   • ABS, PP, VC, VER, VFR
   • Vessel properties, Hemodynamics
   • https://doi.org…038/sc.1994.128