Fitness basics
Learning Center
Ventricular fibrillation
Without fast treatment, this heart rhythm problem can cause death within minutes. Learn the symptoms of VFib and what actions to take to save a life.
Ventricular assist device (VAD)
Learn how this implanted device helps the heart pump and when you might need one.
Vasodilators
Learn how these blood pressure medicines work, what else they treat and the potential side effects.
Vascular rings
Learn more about this condition in which malformations of the aortic arch encircle the windpipe and esophagus and can press against them.
Vaginal hysterectomy
Vaginal hysterectomy is a procedure to remove the uterus through an incision in the vagina to treat certain gynecological conditions.
Vaginal agenesis
In this rare condition that occurs before birth, the vagina doesn't develop and the uterus may only develop partially or not at all. Learn about treatment.
Uterine artery embolization
Learn what to expect, risks and results of uterine artery embolization, a minimally invasive treatment for uterine fibroids.
Urinalysis
This common lab test checks urine for signs of disease and for clues about overall health.
Ureteral obstruction
Learn about what causes blockage of the tubes that carry urine from the kidneys to the bladder, tests you might need and how the condition can be treated.
Unusual COVID-19 symptoms: What are they?
Find out about the unusual symptoms of coronavirus disease 2019 (COVID-19), including COVID toes, nausea, and loss of smell or taste.
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