Category: D

  • Delayed hypersensitivity reactions

    Delayed hypersensitivity reactions orchestrated by T cells manifest as allergic responses that occur several hours to days after exposure to the triggering antigen.  

  • Degenerative arthritis, or osteoarthritis

    An age-related form of arthritis, devoid of inflammation, that typically affects the elderly population. This condition is characterized by the gradual breakdown of cartilage, the expansion of bone margins, and alterations in the joint membranes.  

  • Degas

    In the context of newly constructed materials, it is common for gases and odorous substances to be emitted, necessitating effective gas expulsion and ventilation measures. Adequate air circulation is imperative to eliminate these compounds and ensure a fresher and more pleasant environment.  

  • Deep breathing

    Engaging in deep breathing exercises aids in expanding the lungs and promoting a more efficient distribution of air across all regions of the respiratory system. The patient can either sit in a chair or maintain an upright position in bed, inhaling deeply while pushing the abdomen outward to maximize the intake of air into the…

  • Decubitus ulcers

    A pressure sore resulting from ulceration of the skin occurring in persons confined to bed for long periods of time.  

  • Decreased penetrance

    Individuals who inherit a mutated disease gene but do not exhibit any symptoms.  

  • Dawn simulation

    A modality of light therapy wherein the individual is exposed to progressively intensifying white light while in a state of sleep, spanning across a duration of approximately one and a half hours.  

  • Dark field

    A microscopy methodology involving the illumination of organisms at an inclined angle, resulting in their distinct brightness against a contrasting dark background.  

  • Dacron graft

    A fabricated polyester fiber employed in surgical procedures with meticulous precision to rejuvenate and rectify affected regions of the myocardium (heart muscle) and the endothelial linings of blood vessels.  

  • Dacron

    An artificial polyester fiber employed in surgical procedures to restore and mend compromised segments of the myocardium (heart muscle) and the walls of blood vessels.