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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «R»:

  1. Reflux surgery (fundoplication) Reflux surgery (fundoplication)
    Reflux surgery (fundoplication): A surgical technique that strengthens the barrier to acid reflux when the lower esophageal sphincter does not work normally and there is gastro-esophageal reflux. Fundoplication has been the standard surgical method for treating gastro-esophageal reflux disease (GERD...
  2. Reflux, esophageal Reflux, esophageal
    Reflux, esophageal: A condition wherein stomach contents regurgitate or back up (reflux) into the esophagus (a long cylindrical tube that transports food from the mouth to the stomach). The food in the stomach is partially digested by stomach acid and enzymes. Normally, the partially digested acid c...
  3. Refract Refract
    Refract: In ophthalmology, to determine the bending of light that takes place within the human eye. Refractive errors include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. Lenses can be used to control the amount of refraction, correcting those errors....
  4. Refraction Refraction
    Refraction: In ophthalmology, the bending of light that takes place within the human eye. Refractive errors include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. Lenses can be used to control the amount of refraction, correcting those errors....
  5. Refraction test Refraction test
    Refraction test: Also termed vision test, the refraction test is an examination that tests an individual's ability to see an object at a specific distance. The test is performed by an optometrist or ophthalmologist in the doctor's office. The refraction test involves looking through a device to re...
  6. Refractory Refractory
    Refractory: Not yielding (at least not yielding readily) to treatment....
  7. Refractory anemia Refractory anemia
    Refractory anemia: Anemia (a shortage of red blood cells) unresponsive to treatment....
  8. Refsum disease Refsum disease
    Refsum disease: A genetic disorder affecting the metabolism of the fatty acid phytanic acid. When phytanic acid accumulates, it causes a number of progressive problems, including inflammation of numerous nerves (polyneuritis), diminishing vision due to retinitis pigmentosa, and wobbliness (ataxi...
  9. Regenerate Regenerate
    Regenerate: To reproduce or renew something lost. For example, after an injury, the liver has the capacity to regenerate....
  10. Regimen Regimen
    Regimen: With the accent on the first syllable (reg as in Reggie Jackson), a regimen is a plan, a regulated course such as a diet, exercise or treatment, designed to give a good result. A low-salt diet is a regimen....
  11. Region, regulatory Region, regulatory
    Region, regulatory: A region of a chromosome that controls gene expression. In terms of DNA, it is a regulatory sequence....
  12. Regional enteritis Regional enteritis
    Regional enteritis: Crohn's disease, a chronic inflammatory disease of the intestine primarily in the small and large intestines but which can occur anywhere in the digestive system between the mouth and the anus. Named after Burrill Crohn who described the disease in 1932. The disease usually affe...
  13. Regional lymphadenitis Regional lymphadenitis
    Regional lymphadenitis: Cat scratch disease, a mild flu-like infection, with swollen lymph nodes (lymphadenitis) and mild fever of short duration, due to cat scratches, especially from kittens. There is usually a little bump (a papule) which may be pus-filled (a pustule) at the site of the scratch. ...
  14. Registry Registry
    Registry: Although a registry was originally the place (like Registry House in Edinburgh) where information was collected (in registers), the word registry has also come to mean the collection itself. A registry is usually organized so the data can be analyzed. For example, analysis of data in a tum...
  15. Registry, tumor Registry, tumor
    Registry, tumor: See: Tumor registry. And, for more information, see: Cancer registry....