VAD venous access device
VC vital capacity
VCT venous clotting time
VCUG voiding cysourethrogram
VDRL Venereal Disease Research Laboratory (test for syphilis)
VMA vanillymadelic acid
VO verbal or voice order
V/Q ventilation - perfusion
VRE vancomycin-resistant enterococcus
VSS vital signs stable
VT ventricular tachycardia
VV varicose veins
VW vessel wall
VWD von Willebrand's disease
VZV varicella zoster virus