There are multiple definitions:

1. heart rate variability(English)

   • often decreased during acute phase after stroke
   • BPV, CVA, CVHR, HF, HRD, HRT, HRVdb, ML, PRV, VLBW
   • Cardiology, Electrophysiology, Variability / oscillation, Entropy, Cerebrovascular event, Circadian rhythm, Artificial intelligence, Nervous activity - (para)sympathetic
   • https://pubmed.…ih.gov/9416881/
   • https://doi.org…SAHA.116.308446
   • https://doi.org…mpb.2024.108107
   • https://doi.org…ys.2025.1630032
   • https://doi.org…4814/phy2.70641

2. human rotavirus(English)

   • see Vesikari scale
   • Virology

3. human rhinovirus(English)

   • Virology

4. hypoplastic right ventricle(English)

   • CDA, CDH, CDH-PH, EDD, EDV, FAC, GLV, GRV, HLV, LHR, LV, ND, RV, TLR
   • Cardiology, Congenital disorders, Pathology
   • https://doi.org….1159/000536171