Category: F

  • Flat chest

    A deformity of the chest in which the anteroposterior diameter is short, the thorax long and flat, and the ribs oblique. The scapula is prominent; the spaces above and below the clavicles are depressed. The angle formed by divergence of the costal margins from the sternum is very acute.  

  • Food challenge

    Exposing a patient to a substance to which the patient is thought to react adversely. Ethically, the test cannot be performed without the patient’s permission, but for accuracy the test foods should be disguised during the test. Typically, food challenges are performed after the patient has eliminated the suspected food from his or her diet…

  • First-generation cephalosporin

    Group of cephalosporin antibiotics capable of killing gram-positive cocci such as Staphylococcus aureus, streptococci, and some aerobic gram-negative rods. These agents are commonly used to treat skin and soft tissue infections, uncomplicated respiratory tract infections, and urinary tract infections. Examples of first generation cephalosporins are cephalothin, cephaloridine, cephapirin, cefazolin, cephradine, cephalexin, and cefadroxil.  

  • Feeding center

    An area in the ventrolateral nucleus of the hypothalamus that originates signals to the cerebral cortex that stimulate eating.  

  • Flame cell

    A bone marrow cell with a bright red cytoplasm, occasionally found in the marrow of patients with multiple myeloma.  

  • Female catheter

    A catheter about 5 in (12.7 cm) long, used to pass into a woman’s bladder. A short, flexible tube, known as a catheter, can be inserted into a woman’s bladder via the urethra with the intent of draining urine.  

  • Fibrinous cast

    A yellow-brown cast sometimes seen in glomerulonephritis.  

  • Fatty cast

    A urinary cast, consisting of a mass of fatty globules, seen in the examination of patients with nephrosis.  

  • Family-centered care

    The integration and collaboration of family members in the patient care team, especially in the care of dependent infants, children, or adults with complex or ongoing health care needs.  

  • Field carcinogenesis

    The transformation of healthy cells into cancer cells within an entire region of the body rather than just within a single locale or tissue. Tobacco smoke, which diffusely pervades the oral and respiratory tract, may cause cancer not just in the mouth, but also in the entire field into which smoke is inhaled: e.g., the…