There are multiple definitions:

1. implantable hemodynamic monitor(English)

   • Hemodynamics, Medical technology (assessment), Monitoring

2. interacting-heads motif(English)

   • refers to folding of paired myosin heads
   • ATP, DRX, FS, GCS, GLS, HCM, IVC, IVR, IVRT, LVEDD, LVP, MLC-2, PKA, PTM, PVL, RVU, SAXS, SRX, XB
   • Myocyte / muscle, Bioenergetics
   • https://doi.org/10.1113/JP287759