Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «P»:
Power-of-attorney for health-care decision-making
Power-of-attorney for health-care decision-making: See:
Proxy. health care....
Pox virus: See: Orthopox....
PPAR: Abbreviation for peroxisome proliferator-activated receptor.
There are 3 known subtypes of PPARs -- PPAR-alpha, PPAR-delta, and PPAR-gamma. The PPARs are members of the nuclear hormone receptor subfamily of transcription factors.
The gene for PPAR-gamma is in chromosome band 3p25. It regu...
PPD: 1. Postpartum depression.
2. Purified protein derivative (the PPD skin test for tuberculosis)....
PPMA (post-polio muscular atrophy)
PPMA (post-polio muscular atrophy): Late muscle wasting
that occurs as part of the post-polio syndrome (PPS), a constellation
of symptoms and signs that appear belatedly, from 20 to 40 years,
after the initial polio infection and at least 10 years after what
was once thought to be the "recovery"...
PPS (post-polio syndrome)
PPS (post-polio syndrome): A constellation of symptoms and
signs that appear from 20 to 40 years after the initial polio
infection, and at least 10 years after what was thought to be
recovery from polio It is estimated that 1.63 million Americans were
struck by polio in the epidemics of the 1940...
Practice, family: The medical specialty which provides continuing and comprehensive health care for the individual and family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family practice encompasses all ages, both sexes, each organ ...
Prader-Willi syndrome: A syndrome characterized by severe hypotonia (floppiness), poor suck and feeding problems in early infancy followed later in infancy by excessive eating that, if unchecked, leads gradually to huge obesity. All children with Prader-Willi syndrome (PWS) show developmental delay ...
Prandial: Of or relating to a meal. Prandial pain is pain while eating.
Although medical terms usually have a reasonably logical derivation, this is not the case with "prandial." It comes from the Latin "prandium" which meant "a late breakfast or lunch." "Prandium" was derived in turn from the Greek...
Prayer of Maimonides
Prayer of Maimonides: A prayer that is
said to have been written by the 12th-century physician-philosopher
Moses Maimonides. Like the famous oath of Hippocrates,
the prayer of Maimonides is often recited by new medical graduates.
This prayer, which is also called the "Prayer of Moses
Pre-eclampsia: A condition in pregnancy characterized by abrupt hypertension (a sharp rise in blood pressure), albuminuria (leakage of large amounts of the protein albumin into the urine) and edema (swelling) of the hands, feet, and face. Pre-eclampsia is the most common complication of pregnancy. I...
Pre-sleep dream: Also called a hypnagogic hallucination, this type of dream is characteristically vivid and occurs as one is falling asleep or awakening....
Prealbumin: One of several plasma proteins such as transthyretin that migrate faster than albumin in an acidic starch gel....
Preauricular tag: A common minor anomaly, this is a
rudimentary tag of ear tissue. It often contains a core of cartilage.
The tag is typically located just in front of the ear (auricle) and
is therefore called a preauricular tag....
Precancerous: Pertaining to something that is not yet overtly cancerous, but appears to be on its way to becoming a cancer. Synonymous with premalignant....