Category: R

  • Raccoon roundworm encephalitis

    Encephalitis characterized by inflammation of the meninges, eosinophilia, prolonged encephalopathy, retinitis, and delayed recovery with profound neurological deficits. It is transmitted to children (or others) who eat soil contaminated by raccoon feces.  

  • Radium emanation

    The radioactive gas given off by radium.  

  • Raw egg

    An egg in its fresh, uncooked state, especially one intended for food. Human consumption of raw or inadequately cooked eggs has caused Salmonella infections. To kill Salmonella organisms, if present, eggs should be boiled for 7 min, fried for 3 min per side, or poached for 5 min. It is unsafe to use sauces or…

  • Rod-cone dystrophy

    A form of retinitis pigmentosa in which rod degeneration precedes cone degeneration. Night blindness is usually the first symptom, followed by peripheral visual loss.  

  • Renal dwarf

    A dwarf whose condition is due to renal osteodystrophy.  

  • Rachitic dwarf

    A dwarf whose condition is due to rickets.  

  • Radioprotective drug

    A drug that protects humans against the damaging or lethal effects of ionizing radiation. For example, Lugol’s solution blocks the uptake of inhaled or ingested radioactive iodine by the thyroid.  

  • Radiation dose

    Energy (joules) deposited by radiation in 1 kg of body tissue.  

  • Risk for disuse syndrome

    A state in which an individual is at risk for deterioration of body systems as the result of prescribed or unavoidable musculoskeletal inactivity.  

  • Risk for compromised human dignity

    At risk for perceived loss of respect and honor.