| Abbreviation | Meaning |
|---|---|
| V | ventilation |
| VA | visual acuity |
| VAC | vincristine, actinomycin D, and cyclophosphamide (chemotherapy regimen) |
| VAC | vacuum-assisted closure (of a wound) |
| VACTERL | vertebral defects, anal atresia, cardiac defects, tracheo-esophageal fistula, renal, and limb anomalies (VACTERL association) |
| VAD | ventricular assist device vincristine, adriblastine, dexamethasone |
| Vag | vaginal |
| VAI | vincristine, actinomycin D, and ifosfamide (chemotherapy regimen) |
| VAMP | vesicle-associated membrane protein vincristine, adriblastine, methylprednisone |
| VAS | vibroacoustic stimulation visual analog scale |
| VBG | venous blood gases |
| VBAC | vaginal birth after caesarean |
| VC | vital capacity |
| VCTC | voluntary counselling and testing centers (for HIV—government centres in India) |
| vCJD | variant Creutzfeldt–Jakob disease |
| VCUG | voiding cystourethrogram |
| VD | vaginal delivery venereal disease (outdated name for sexually transmitted disease) volume of distribution |
| VDRF | ventilator-dependent respiratory failure |
| VDRL | Venereal Diseases Research Laboratory (old test for syphilis) |
| VE | vaginal examination (manual examination) |
| VEB | ventricular ectopic beat |
| VED | Vacuum Erection Device |
| VEE | Venezuelan equine encephalitis |
| VF V-fib | ventricular fibrillation |
| VFSS | videofluoroscopic swallow study |
| VH | visual hallucinations vaginal hysterectomy |
| VHL | Von Hippel–Lindau disease |
| VIN | vulvar intraepithelial neoplasia |
| VIR | Vascular Interventional Radiology |
| VIP | vasoactive intestinal peptide |
| VLDL | very-low-density lipoprotein |
| VMA | vanillylmandelic acid violent mechanical asphyxia |
| VNPI | Van Nuys prognostic scoring index (for ductal carcinoma) |
| VO | verbal order |
| VOC | vaso-occlusive crisis |
| VOD | volume of distribution |
| VPA | valproic acid |
| VPAP | variable positive airway pressure |
| VPB | ventricular premature beats (see premature ventricular contraction) |
| VPC (PVC) | ventricular premature contraction |
| VPI | Velopharyngeal insufficiency |
| V/Q | ventilation/perfusion scan |
| VRE | vancomycin-resistant enterococcus |
| VRSA | vancomycin-resistant Staphylococcus aureus |
| VS | vital signs versus visual snow |
| VSD | ventricular septal defect |
| VSR | ventricular septal rupture (see myocardial rupture) |
| VSS | vital signs stable visual snow syndrome |
| VT | ventricular tachycardia verotoxin |
| VTE | venous thromboembolism |
| VTEC | verotoxin-producing Escherichia coli , also known as enterohaemorrhagic E. coli |
| VUR | vesicoureteral reflux |
| VWD | ventral wall defect Von Willebrand disease |
| VWF | Von Willebrand factor |
| VZIG | varicella zoster immune globulin |
| VZV | varicella zoster virus |