Drugs Information Online
Drugs and diseases reference index

Drugs and diseases reference index
Search
EN

Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «V»:

  1. Ventricular assist device Ventricular assist device
    Ventricular assist device: A mechanical pump that takes over the function of the damaged ventricle of the heart and restores normal blood flow. Left ventricular assist devices (LVADs) were originally developed for patients with heart disease from which they were not expected to recover and who nee...
  2. Ventricular beat, premature Ventricular beat, premature
    Ventricular beat, premature: See: Extrasystole....
  3. Ventricular fibrillation 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. Ventricular fibrillation disrupts the synchrony between the heartbeat and the pulse beat. Ventricular fibrillation is most ...
  4. Ventricular septal defect (VSD) Ventricular septal defect (VSD)
    Ventricular septal defect (VSD): A hole in the septum (the wall) between the lower chambers of the heart (the ventricles). Ventricular Septal Defect is the most common type of heart malformation (congenital heart disease). At least 1 baby in every 500 is born with a VSD. A VSD lets blood from th...
  5. Ventricular septum Ventricular septum
    Ventricular septum: The wall between the two lower chambers (the right and left ventricles) of the heart....
  6. Ventricular tachycardia Ventricular tachycardia
    Ventricular tachycardia: An abnormally rapid heart rhythm that originates from a ventricle, one of the lower chambers of the heart. Although the beat is regular, ventricular tachycardia is life-threatening because it can lead to a dreaded condition, ventricular fibrillation. In ventricular fibril...
  7. Ventriculopleural shunt Ventriculopleural shunt
    Ventriculopleural shunt: A shunt that drains fluid from a cerebral ventricle into the pleural (chest) cavity. The shunt is designed to relieve hydrocephalus ("water on the brain")....
  8. Venule Venule
    Venule: A little vein. Venules go from capillaries to veins, vessels that carry blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) makes the blood in veins and venules appear dark. Veins and venules are part of the afferent wing of ...
  9. VER VER
    VER: Visual evoked response. A type of electrophysiologic retinal testing....
  10. Verbal child abuse Verbal child abuse
    Verbal child abuse: Also known as emotional child abuse, this is the third most frequently reported form of child abuse (after child neglect and physical child abuse), accounting 17% of all cases of child abuse. It is likely that emotional child abuse is greatly underreported, since it can be d...
  11. Vernix Vernix
    Vernix: More formally known as vernix caseosa, the vernix is a white cheesy substance that covers and protects the skin of the fetus and is still all over the skin of a baby at birth. Vernix is composed of sebum (the oil of the skin) and cells that have sloughed off the fetus' skin. "Vernix" is the ...
  12. Vernix caseosa Vernix caseosa
    Vernix caseosa: A white cheesy substance that covers and protects the skin of the fetus and is still all over the skin of a baby at birth. Vernix caseosa is composed of sebum (the oil of the skin) and cells that have sloughed off the fetus' skin. "Vernix" is the Latin word for "varnish." The vernix ...
  13. Verruca 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 oneself (autoinoculation). Warts that occur on the ha...
  14. Version Version
    Version: 1. In obstetrics, the process of turning the fetus. A cephalic version brings the fetal head into the birth canal. 2. In gynecology, the tilting of the uterus. Uterine retroversion indicates the uterus is tilted backwards. 3. In ophthalmology, the conjugate rotation (turning) of both eyes...
  15. Vertebra 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). ...