191, 1841). Poland became a celebrated surgeon and ophthalmologist but had to retire in 1867 due to a chronic cough. He died in 1872 at the age of 51 of “consumption of the lungs” (pulmonary tuberculosis). Although Poland could never have discovered this syndrome without George Elt, Mr. Elt has not been credited nor has his name ever been associated with the syndrome.
- Postremission therapy
Chemotherapy to kill leukemia cells that survive after remission induction therapy.
- Postulates, Koch's
It has acquired extra virulence factors making it pathogenic. It gains access to deep tissues via trauma, surgery, an IV line, etc. It infects an immunocompromised patient. Not all people infected by a bacteria may develop disease-subclinical infection is usually more common than clinically obvious infection. Despite such limitations, Koch’s postulates are still a useful […]
- Postural hypotension
from sitting to standing or from lying down to sitting or standing. Postural hypotension is more common in older people. The change in position causes a temporary reduction in blood flow and therefore a shortage of oxygen to the brain. This leads to lightheadedness and, sometimes, a “black out” episode, a loss of consciousness. Tilt-table […]
from sitting to standing or from lying down to sitting or standing. The root of the word “posture” is the Latin verb “ponere” meaning “to put or place.” The past participle “positus” gave the noun “positura” that travelled via France to England in the 16th century as “posture.”
The major positive ion (cation) found inside cells. The chemical notation for potassium is K+. The proper level of potassium is essential for normal cell function. An abnormal increase in potassium (hyperkalemia) or decrease in potassium (hypokalemia) can profoundly affect the nervous system and heart, and when extreme, can be fatal. The normal blood potassium […]