U & V & W & X & Y & Z Abbreviations

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U
UA	urinalysis
UAC	uric acid | umbilical artery catheter
UAO	upper airway obstruction
UBD	universal blood donor
UC	ulcerative colitis | umbilical cord
ud	as directed
UFH	unfractionated heparin
UGI	upper gastrointestinal
URI	upper respiratory infection
URQ	upper right quadrant
US	ultrasound
UTI	urinary tract infection
UUN	urinary urea nitrogen
UVA	ultraviolet A light
V
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
W
WB	whole blood
WBC	white blood cell or count
WBR	whole body radiation
WD	well developed
WF	white female
WIA	wounded in action
WID	widow, widower
WM	white male
WN	well nourished
WNL	within normal limits
WO	written order | weeks old | wide open.
WOP	without pain
W.P.	whirlpool
WPW	Wolff-Parkinson-White
W-T-D	wet to dry
W/U	workup
X
X2d	times 2 days.
XI	eleven
XII	twelve
XL	extended release. | extra large.
XM	crossmatch
XMM	xeromammography
XOM	extraocular movements
XRT	X-ray therapy (radiation therapy)
XS	excessive
XULN	times upper limit of normal
Y
YF	yellow fever
YLC	youngest living child
yo	years old
YOB	year of birth
yr	year
ytd	year to date
Z
ZDV	zidovudine
ZE	Zollinger-Ellison
Z-ESR	zeta erythrocyte sedimentation rate
Zn	zinc
ZnO	zinc oxide
ZSB	zero stools since birth