Policosanol is a mixture of higher primary aliphatic alcohols isolated from sugar cane wax, whose main component is octacosanol. The precise mechanism of action of policosanol in regard to cholesterol is not understood. Policosanol is considered a dietary supplement in the US.
- Poland syndrome
An uncommon, unique pattern of one-sided malformations that is characterized by a defect of the chest muscle (pectoralis) on one side of the body and webbing and shortening of the fingers (cutaneous syndactyly) on the hand on the same side. Its cause is uncertain, and it does not appear to run in families. Treatment may […]
- Poland syndactyly
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 […]
- 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 […]