There are multiple definitions:

1. ventricular fibrillation(English)

   • AF, RPO
   • Cardiology

2. visual field(English)

   • DLS
   • Ophthalmology

3. vascular failure(English)

   • a novel clinical entity for vascular disease, defined as the integration of vascular endothelial dysfunction, smooth muscle dysfunction, and metabolic dysfunction. It is a highly integrated concept, which includes a broad spectrum of pathophysiology in vascular diseases. Importantly, vascular failure indicates an impairment of vascular function and structure, as well as a disturbed metabolic milieu that can alter vascular metabolism. The pathophysiological features of vascular failure range from a subclinical initial stage of vascular dysfunction to the clinical manifestations of advanced atherosclerosis
   • CAVI, FMD, NO, PAT, PWV, RHI
   • Vascular disease, Atherosclerosis /atherogenic, Metabolism
   • https://doi.org…ONAHA.118.11554

4. visceral fat(English)

   • broadly defined as adipose tissue lying within the innermost parts of the abdominal cavity and not contained within other abdominal organs or muscles
   • Adiposity, Metabolism, Nutrition, Preventive medicine
   • https://doi.org…07869-7.00009-X

5. vertebral fracture(English)

   • there is insufficient evidence to support kyphoplasty over nonsurgical management, percutaneous vertebroplasty, or vertebral body stenting
   • AE, ASBMR
   • Spine (or spinal cord), Injury
   • https://doi.org….1002/jbmr.3653

6. ventilatory function(English)

   • AIS, FEC, FVC, FEV1, FEV1/FVC, MVV, ODI, 6MWT
   • Respiratory system
   • https://doi.org…300060517715375

7. virological failure(English)

   • occurs when antiretroviral therapy (ART) fails to suppress and sustain a person's viral load to less than 200 copies/mL. Factors that can contribute to virologic failure include drug resistance, drug toxicity, and poor adherence to ART
   • ART, HIV, TAM, TZV, VL
   • Virology
   • https://doi.org…965350701200102

8. vocal fatigue(English)

   • common clinical symptom of voice diseases
   • Speaking / language [incl. disorders], Fatigue, Preventive medicine
   • https://doi.org…993.2023.11.015