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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «S»:

  1. Subarachnoid hemorrhage Subarachnoid hemorrhage
    Subarachnoid hemorrhage: Bleeding within the head into the space between two membranes that surround the brain. The bleeding is beneath the arachnoid membrane and just above the pia mater. (The arachnoid is the middle of three membranes around the brain while the pia mater is the innermost one.) Th...
  2. Subclavian Subclavian
    Subclavian: Under the clavicle (the collar bone), as the subclavian artery or the subclavian vein....
  3. Subclavian steal Subclavian steal
    Subclavian steal: The symptoms of cerebral vascular insufficiency (not enough blood to the brain) when the patient exercises an arm, due to obstruction of the subclavian artery before the origin (the takeoff) of the vertebral artery. Exercising the arm causes the blood flow to reverse and the subcla...
  4. Subclinical disease Subclinical disease
    Subclinical disease: An illness that stays below the surface of clinical detection. A subclinical disease has no recognizable clinical findings. It is distinct from a clinical disease, which has signs and symptoms that can be recognized. Many diseases, including diabetes, hypothyroidism, and rhe...
  5. Subconjunctival hemorrhage Subconjunctival hemorrhage
    Subconjunctival hemorrhage: A very common cause of a painless bloody eye usually first noticed by somebody else or by the person with it when they look in the mirror. The bleeding results from a break in a small blood vessel in the sclera, the white of the eye. This releases a tiny amount (less than...
  6. Subcu Subcu
    Subcu: Abbreviation for subcutaneous. Subcutaneous means under the skin. It implies just under the skin. With a subcutaneous injection, a needle is inserted just under the skin. A drug (for example, insulin) can then be delivered into the subcutaneous tissues. After the injection, the drug mov...
  7. Subcutaneous Subcutaneous
    Subcutaneous: Under the skin. "Subcutaneous" implies just under the skin. With a subcutaneous injection, a needle is inserted just under the skin. A drug (for example, insulin) can then be delivered into the subcutaneous tissues. After the injection, the drug moves into small blood vessels and the...
  8. Subcutaneous hematoma Subcutaneous hematoma
    Subcutaneous hematoma: A bruise....
  9. Subdeltoid Subdeltoid
    Subdeltoid: Beneath the deltoid, the large muscle that stretches from the clavicle (collarbone) to the humerus (the long bone in the upper arm) and so covers the shoulder....
  10. Subdural Subdural
    Subdural: Below the dura, the outermost, toughest, and most fibrous of the three membranes (meninges) covering the brain and the spinal cord. An subdural hematoma is a collection of blood beneath the dura....
  11. Subdural hematoma Subdural hematoma
    Subdural hematoma: Bleeding into the space between the dura (the brain cover) and the brain itself. This space is called the subdural space. If the hematoma puts increased pressure on the brain, neurological abnormalities including slurred speech, impaired gait, and dizziness may result and progress...
  12. Subglottis Subglottis
    Subglottis: The lower part of the larynx just below the vocal cords down to the top of the trachea, which takes air to the lungs....
  13. Subjacent Subjacent
    Subjacent: Just beneath or underneath. The opposite of subjacent is superjacent. Other related terms include adjacent and circumjacent. From sub-, under + the Latin jacere, to lie = to lie under....
  14. Subject Subject
    Subject: As a noun: 1. A branch of learning that forms a course of study. In medical school, one of the subjects traditionally studied in the first year is anatomy. 2. A matter that is studied or otherwise considered. Death is a subject often avoided by doctors in talking with patients. 3. The obje...
  15. Sublingual Sublingual
    Sublingual: Underneath the tongue. A sublingual medication is a type of lozenge put under the tongue where it dissolves and is absorbed. The sublingual gland is a salivary gland under the tongue. See also: Lingual....