Category: D

  • Dorsal elevated position

    A position in which the patient lies on the back with the head and shoulders elevated at an angle of 30° or more. It is employed in digital examination of genitalia and in bimanual examination of the vagina.  

  • Decubitus position

    The position of the patient on a flat surface. The exact position is indicated by which surface of the body is closest to the flat surface (i.e., in left or right lateral decubitus, the patient is flat on the left or right side, respectively; in dorsal or ventral decubitus, the patient is on the back…

  • Digitalis poisoning

    Acute or chronic toxicity due to the cumulative effect of digitalis. Its most common adverse effects include anorexia, nausea, vomiting, atrial tachycardia and other dysrhythmias, atrioventricular heart blocks, confusion, dizziness, or neurological depression. Digitalis toxicity is a potentially life threatening, and frequently a drug-related, complication.  

  • Disparate point

    Points on the retinas that are unequally paired.  

  • Deaf point of the ear

    One of several points or areas close to the external auditory meatus where a vibrating tuning fork is not heard.  

  • Desquamative interstitial pneumonia

    Pneumonia of unknown cause, accompanied by cellular infiltration or fibrosis in the pulmonary interstitium. Progressive dyspnea and a nonproductive cough are symptoms characterizing this disease. Clubbing of the fingers is a common finding. Diffusion of oxygen and carbon dioxide is abnormal. Diagnosis is made by lung biopsy. The condition is treated by corticosteroids.  

  • Dental plexor

    A network of sensory nerve fibers that are distributed to the teeth. The inferior alveolar nerve is distributed to the mandibular teeth; the anterior, middle, and posterior superior alveolar nerves contribute fibers to innervate the maxillary teeth.  

  • Dry pleurisy

    A condition in which the pleural membrane is covered with a fibrinous exudate.  

  • Datum plane

    An assumed horizontal plane from which craniometric measurements are taken.  

  • Dental care plan

    The statement of the goals, objectives, and procedures related to the dentist’s care for the patient, based on the medical history, oral examination, and oral radiographs.