Category: Q

  • Quadribasic

    Having four replaceable atoms of hydrogen.  

  • Quadrantectomy

    Surgical removal of a defined segment of an organ, e.g. , of part of the breast in a patient with breast cancer. A surgical method wherein tissue is extracted from a single quadrant of the breast to address breast cancer.  

  • Quad

    Medical “shorthand” for quadriceps, quadrilateral, quadrant, quadriplegia.  

  • Qod

    Every other day. Like q.d., this is a discredited and dangerous abbreviation and should not be used in clinical practice. The “o” may be misinterpreted as a period or an “i.”  

  • Quail poisoning

    Acute myoglobinuria following ingestion of game birds of the species Coturnix coturnix. The cause is unknown but is suspected to be toxic rather than genetic (as was once believed).  

  • Quick-connect outlet

    A device that allows a compressed gas container to be quickly connected to and disconnected from the delivery unit.  

  • Quadrangular membrane

    The upper portion of the elastic membrane of the larynx extending from the aryepiglottic folds to the level of the ventricular folds below.  

  • Quotidian malaria

    Malaria in which paroxysms occur with daily periodicity due to 24-hr sporulation of two groups of P. vivax. Temperature rises and falls abruptly.  

  • Quartan malaria

    Malaria with short and less severe paroxysms. Sporulation occurs each 72 hr, causing seizures every 4 days. It is caused by Plasmodium malariae.  

  • Quadrate lobe of liver

    An oblong elevation on the lower surface of the liver.