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Medical Dictionary Terms Beginning with V
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Ventricular arrhythmias
Ventricular arrhythmias: Abnormal rapid heart rhythms (arrhythmias) that originate in the lower chambers of the heart (the ventricles). Ventricular arrhythmias include ventricular tachycardia and ventricular fibrillation. Both are life threatening arrhmore detail info...
Ventricular fibrillation
Ventricular fibrillation: An abnormal irregular heart rhythm whereby there are very rapid uncoordinated fluttering contractions of the lower chambers (ventricles) of the heart. Venticular fibrillation disrupts the synchrony between the heartbeat and thmore detail info...
Ventricular septal defect (VSD)
Ventricular septal defect (VSD): A ventricular septal defect (VSD) is a hole in the septum (the wall) between the lower chambers of the heart (the ventricles). VSDs are the commonest class of heart malformation (congenital heart disease). At leastmore detail info...
Ventricular septum
Ventricular septum: The wall between the two lower chambers (the right and left ventricles) of the heart.more detail info...
Ventricular tachycardia
Ventricular tachycardia: An abnormal heart rhythm that is rapid, regular and originates from an area of the ventricle, the lower chamber of the heart. Ventricular tachycardias are life threatening arrhythmias most commonly associated with heart attacksmore detail info...
Venule
Venule: A little vein. Venules go from capillaries to veins.more detail info...
Verruca
Verruca: A wart by another name, a local growth of the outer layer of the skin (the epidermis) caused by a virus. The virus of warts (a human papillomavirus) is transmitted by contact. The contact can be with a wart on someone else or one on oneselfmore detail info...
Vertebra
Vertebra: A vertebra is one of 33 bony segments that form the spinal column of humans. There are 7 cervical, 12 thoracic, 5 lumbar, 5 sacral (fused into one sacrum bone) and 4 coccygeal (fused into one coccyx bone).more detail info...
Vertebral artery
Vertebral artery: A key artery located in the back of the neck that carries blood from the heart to the brain.more detail info...
Vertebroplasty
Vertebroplasty: A new nonsurgical method for the repair of osteoporosis back fractures. Broken bones in the spine are often due to osteoporosis, the progressive loss of bone tissue, which depletes both the collagen and the calcium salts from bonemore detail info...
Vertex
Vertex: The top of the head. In a vertex presentation, the top of the baby’s head comes first at delivery. The word &vertex& in Latin means a &whirlpool, whirlwind, top of the mountain, or the top of the head.& Why &more detail info...
Vertical transmission
Vertical transmission: Passage of a disease-causing agent (a pathogen) vertically from mother directly to baby during the perinatal period, the period immediately before and after birth. The perinatal period is defined in diverse ways. Dependinmore detail info...
Vertigo
Vertigo: Aside from being the name of a classic 1958 Alfred Hitchcock film (with Jimmy Stewart and Kim Novak), vertigo is a feeling that you are dizzily turning around or that things are dizzily turning about you. Vertigo is usually due to a promore detail info...
VES (Voluntary Euthanasia Society)
VES (Voluntary Euthanasia Society):The first society of its kind in the world -- its founders included doctors, lawyers and churchmen -- the VES was set up in England in 1935. The announced aim of the VES is to make it legal for a competent adult sufferinmore detail info...
Vesical
Vesical: Refers to the urinary bladder. The word comes from the Latin vesica meaning a bag or bladder.more detail info...
Vesicle
Vesicle: A small skin blister, in dermatology. A small pouch, in anatomy. The word vesicle comes from the Latin diminuitive vesiculum meaning a small bag or bladder.more detail info...
Vesicular
Vesicular: The adjective for vesicle. A vesicular rash has small blisters on the skin.more detail info...
Vesicular rickettsiosis
Vesicular rickettsiosis: A mild infectious disease first observed in New York City, caused by Rickettsia akari, transmitted from its mouse host by chigger or adult mite bites. There is fever, a dark spot that becomes a small ulcer at the site of the bimore detail info...
Vessel, afferent
Vessel, afferent: A vessel carrying blood toward the heart. A vein or venule. Afferent hails from the Latin ad meaning toward + ferre, to bear. The opposite of an afferent vessel is an efferent vessel, an artery or arteriole.more detail info...
Vessel, efferent
Vessel, efferent: A vessel carrying blood away from the heart. An artery or arteriole. Efferent comes from the Latin e- or ex- meaning out or away + ferre, to bear. The opposite of an efferent vessel is an afferent vessel, a vein or venule.more detail info...