Category: D

  • Death rattle

    A colloquial term for gurgling noises caused by movements of secretions in the upper airways with inspiration and expiration in dying patients. A raucous type of respiration arises due to the accumulation of sputum (viscous material) in the air passages of an individual nearing the end of life, rendering them incapable of swallowing or expelling…

  • Dose rate

    The quantity of medicine or radiation administered per unit of time.  

  • Direct radiography

    The conversion of x-ray energy received from an imaged body part into digital format using semiconductors, without first collecting images on an image plate or as light.  

  • Dental radiograph

    A radiograph of dental structures made on x-ray film or stored as a digital image. The radiographs may be extraoral or intraoral. Three common types of intraoral dental images are periapical, interproximal, and occlusal radiographs.  

  • Dental quadrant

    One quarter of the mouth. Each arch is divided in half so that one can easily describe the location of teeth or soft tissue observations. Quadrants are labeled as maxillary right and left or mandibular right and left and are shown in diagram form for dental records.  

  • Diabetic puncture

    Puncture in the floor of the fourth ventricle, which results in glycosuria. This lesion was produced experimentally by the French physiologist Claude Bernard.  

  • Dorsalis pedis pulse

    A pulse felt over the dorsalis pedis artery of the foot.  

  • Digital pulp

    The elastic, soft prominence on the palmar or plantar surface of the last phalanx of a finger or toe. The tender, flexible tip found at the end of a finger or toe.  

  • Devitalized pulp

    A dead or necrotic dental pulp as indicated by a vitalometer used for pulp testing.  

  • Depressive psychosis

    Psychosis characterized by extreme depression, melancholia, and feelings of unworthiness.