There are multiple definitions:

1. hypoxic ventilatory response(English)

   • compared with adults, healthy term infants have an immature HVR until at least 6 months of age. Correlates positively with respiratory variability
   • AS, NREM, QS, REM, SIDS, AMPA, CB, CIH, CSN, GABA, HPA, NMS, OSA, PVH, SDB
   • Respiratory system, Neonatology, Oxygen, Sleep medicine, Gender aspects, Lifestyle
   • https://doi.org…esp.2005.03.006
   • https://doi.org/10.1113/JP284113

2. hypervariable region(English)

   • AGPT, CAM, IBDV, vv
   • Variability / oscillation, Genetics
   • https://doi.org…vsm.2014.02.004
   • https://doi.org…0/cells10071831