Copy of `Dorland's Medical Dictionary`

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Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

pursed-lip breathing
a breathing technique in which air is inhaled slowly through the nose and then exhaled slowly through pursed lips. This type of breathing is often used by patients with chronic obstructive pulmonary disease to prevent small airway collapse.

Purtilo syndrome
(pәr-te´lo) X-linked lymphoproliferative syndrome.

Purtscher disease
(poor´cher) traumatic angiopathy of the retina with edema, hemorrhage, and exudation, usually following crush injuries of the chest; called also Purtscher angiopathic retinopathy.

purulence
(pu´roo-lәns) suppuration.

purulent
(pu´roo-lәnt) pertaining to or consisting of pus. containing pus. suppurative. caused by pus.

purulent labyrinthitis
acute suppurative labyrinthitis.

purulent otitis media
suppurative otitis media.

purulent pericarditis
a form characterized by pus formation, usually due to bacterial infection, and less often to fungal or viral infection; it may have spread from neighboring tissues, through the blood or lymphatic systems, or via direct implantation in wounds. It usually has fibrinous or purulent exudates and often results in constrictive ...

purulent peritonitis
peritonitis with pus formation.

purulent pleurisy
empyema (def. 2).

purulent pneumonia
suppurative pneumonia.

purulent synovitis
synovitis with effusion of pus in a synovial sac.

pus
(pus) a protein-rich liquid inflammation product made up of leukocytes, cellular debris, and thin fluid. blue pus pus with a bluish tint, seen in certain infections; the color is from the presence of an antibiotic pigment (pyocyanin) produced by Pseudomonas aeruginosa.

pus cells
polymorphonuclear leukocytes, chiefly neutrophils, occurring in pus.

pustular
(pus´tu-lәr) pertaining to or of the nature of a pustule. consisting of pustules.

pustular psoriasis
a chronic, relapsing type with vesicles or pustules, generally occurring in association with a focal infection elsewhere in the body. Two types are recognized: Generalized pustular psoriasis is more severe and is usually seen in patients with arthritis or erythrodermic psoriasis; its characteristics include high fever, leukocyt...

pustulation
(pus″tu-la´shәn) the formation of pustules; see also pustulosis.

pustule
(pus´tūl) a small, elevated, circumscribed, pus-containing lesion of the skin.

pustulosis
(pus″tu-lo´sis) a condition marked by an eruption of pustules.

putamen
(pu-ta´mәn) the larger, darker, and more lateral part of the lentiform nucleus, separated from the lateral globus pallidus by the lateral medullary lamina.

Putnam-Dana syndrome
(put´nәm da´nә) subacute combined degeneration of spinal cord.

putrefaction
(pu″trә-fak´shәn) enzymatic decomposition, especially of proteins, with the production of foul-smelling compounds, such as hydrogen sulfide, ammonia, and mercaptans. adj., putrefac´tive., adj.

putrefy
(pu´trә-fi) to undergo putrefaction.

putrescence
(pu-tres´әns) the condition of undergoing putrefaction. adj., putres´cent., adj.

putrescine
(pu-tres´ēn) a polyamine first found in decaying meat; small quantities occur in most cells.

putrid
(pu´trid) rotten; putrefied.

Puumala virus
a virus of the genus Hantavirus that causes a mild type of hemorrhagic fever in Scandinavia, Russia, and several other European countries.

Puusepp reflex
abduction of the little toe on stimulating the posterior external part of the sole of the foot; indicative of lesions of the extrapyramidal and pyramidal tracts.

PUVA therapy
[psoralen + ultraviolet A], a form of photochemotherapy for skin disorders such as psoriasis and vitiligo; oral psoralen administration is followed two hours later by exposure to ultraviolet a radiation.

PVP
polyvinylpyrrolidone (see povidone).

PVP-I
povidone-iodine.

PWA
person with AIDS.

pyarthrosis
(pi″ahr-thro´sis) acute suppurative arthritis.

pyelectasis
(pi″ә-lek´tә-sis) dilatation of the renal pelvis.

pyelitis
(pi″ә-li´tis) inflammation of the renal pelvis, usually caused by a bacterial infection such as with Escherichia coli, a streptococcus, or a staphylococcus. These may invade the kidney from the bloodstream or may ascend through the ureters from a bladder infection. The ascending type of infection is more com...

pyelocaliectasis
(pi″ә-lo-kal″e-ek´tә-sis) dilation of the renal pelvis and calices.

pyelocalyceal system
collecting system.

pyelocystitis
(pi″ә-lo-sis-ti´tis) inflammation of the renal pelvis and bladder; called also cystopyelitis.

pyelogram
(pi´ә-lo-gram) the film produced by pyelography.

pyelography
(pi″ә-log´rә-fe) radiography of the renal pelvis and ureter after injection of a contrast medium. intravenous pyelography pyelography with intravenous injection of a contrast medium that passes quickly into the urine. retrograde pyelography ...

pyelointerstitial
(pi″ә-lo-in″tәr-stish´әl) pertaining to the interstitial tissue of the renal pelvis.

pyelolithotomy
(pi″ә-lo-lĭ-thot´ә-me) incision of the renal pelvis for removal of a calculus.

pyelonephritis
(pi″ә-lo-nә-fri´tis) inflammation of the kidney and renal pelvis; see also pyelitis and nephritis.

pyelonephrosis
(pi″ә-lo-nә-fro´sis) any disease of the kidney and renal pelvis.

pyeloplasty
(pi´ә-lo-plas″te) plastic repair of the renal pelvis.

pyelostomy
(pi″ә-los´tә-me) the operation of forming an opening in the renal pelvis in order to temporarily divert the urine from the ureter.

pyelotomy
(pi″ә-lot´ә-me) incision of the renal pelvis.

pyelovenous
(pi″ә-lo-ve´nәs) pertaining to the renal pelvis and renal veins.

pyemia
(pi-e´me-ә) septicemia in which secondary foci of pus formation occur and multiple abscesses are formed. adj., pye´mic., adj. arterial pyemia a form due to the dissemination of septic emboli from the heart. cryptogenic pyemia that in which th...

pyencephalus
(pi″en-sәf´ә-lәs) abscess of the brain.

pygal
(pi´gәl) gluteal.

pygalgia
(pi-gal´jә) pain in the buttocks.

pygoamorphus
(pi″go-ә-mor´fәs) asymmetrical conjoined twins, in which the parasite is an amorphous mass attached to the sacral region of the autosite.

pygodidymus
(pi″go-did´ĭ-mәs) conjoined twins fused in the cephalothoracic region, with double hips and pelvis.

pygomelus
(pi-gom´ә-lәs) a fetus with an extra limb or limbs attached to or near the buttocks.

pygopagus
(pi-gop´ә-gәs) conjoined twins fused in the sacral region.

pyknic
(pik´nik) having a short, thick, stocky build.

pyknic type
a constitutional type marked by rounded body, large chest, thick shoulders, broad head, and short neck.

pyknocyte
(pik´no-sīt″) a distorted and contracted, occasionally spiculed erythrocyte.

pyknocytosis
(pik″no-si-to´sis) conspicuous increase in the number of pyknocytes.

pyknodysostosis
(pik″no-dis″os-to´sis) a hereditary syndrome of dwarfism, osteopetrosis, and skeletal anomalies of the cranium, digits, and mandible.

pyknometer
(pik-nom´ә-tәr) an instrument for determining the specific gravity of fluids.

pyknomorphous
(pik″no-mor´fәs) having the stained portions of the cell body compactly arranged.

pyknophrasia
(pik″no-fra´zhә) thickness of speech.

pyknosis
(pik-no´sis) a thickening, especially the degeneration of a cell in which the nucleus shrinks in size and the chromatin condenses to a solid, structureless mass or masses. adj., pyknot´ic., adj.

Pyle disease
(pīl) metaphyseal dysplasia.

pylephlebitis
(pi″le-flә-bi´tis) inflammation of the portal vein.

pylethrombophlebitis
(pi″le-throm″bo-flә-bi´tis) thrombosis and inflammation of the portal vein.

pylethrombosis
(pi″le-throm-bo´sis) thrombosis of the portal vein.

pyloralgia
(pi″lo-ral´jә) pain in the region of the pylorus.

pylorectomy
(pi″lo-rek´tә-me) surgical removal of the pylorus.

pyloric
(pi-lor´ik) pertaining to the pylorus.

pyloric antrum
the upper, expanded portion of the pylorus in the stomach. Pyloric antrum.

pyloric atresia
prepyloric atresia.

pyloric canal
the short narrow part of the stomach extending from the gastroduodenal junction to the pyloric antrum.

pyloric glands
the mucin-secreting glands of the pyloric part of the stomach.

pyloric sphincter
a sphincter at the opening from the stomach into the duodenum; it is usually closed, opening only for a moment when a peristaltic wave passes over it.

pyloric stenosis
obstruction of the pyloric opening between the stomach and the duodenum; it may be congenital, as in hypertrophic pyloric stenosis, or acquired, such as from ulcers or carcinoma in the stomach. The primary symptom is vomiting that starts out mild but becomes more and more forceful.

pyloric valve
a prominent fold of mucous membrane at the pyloric orifice of the stomach.

pyloric vein
right gastric vein.

pyloroduodenitis
(pi-lor″o-du″o-de-ni´tis) inflammation of the mucous membranes of the pylorus and duodenum.

pylorogastrectomy
(pi-lor″o-gas-trek´tә-me) pylorectomy.

pyloromyotomy
(pi-lor″o-mi-ot´ә-me) incision of the longitudinal and circular muscles of the pylorus.

pyloroplasty
(pi-lor´o-plas″te) plastic surgery of the pylorus and the channel through it to provide a larger communication between the stomach and duodenum. (A), Heineke-Mikulicz pyloroplasty; (B), Finney pyloroplasty. double pyloroplasty posterior pylorom...

pylorospasm
(pi-lor´o-spaz″әm) spasm of the pylorus or the pyloric opening.

pylorostenosis
(pi-lor″o-stә-no´sis) pyloric stenosis.

pylorostomy
(pi″lor-os´tә-me) surgical formation of an opening through the abdominal wall into the stomach near the pylorus.

pylorotomy
(pi″lor-ot´ә-me) incision of the pylorus.

pylorus
(pi-lor´әs) the lower part of the stomach, where it connects to the duodenum. A ring of muscles, the pyloric sphincter, serves as a “gate,” to close the opening; it opens periodically to allow the contents of the stomach to move into the duodenum. Numerous glands in this region produce hydrochloric aci...

pyo-ovarium
(pi″o-o-var´e-әm) an abscess of the ovary.

pyocele
(pi´o-sēl″) a collection of pus, as in the scrotum.

pyocephalus
(pi″o-sef´ә-lәs) brain abscess.

pyochezia
(pi″o-ke´zhah) the presence of pus in the feces.

pyococcus
(pi″o-kok´әs) a pus-forming coccus.

pyocolpos
(pi″o-kol´pos) pus in the vagina.

pyocyanic
(pi″o-si-an´ik) pertaining to or characterized by blue pus.

pyocyanin
(pi″o-si´ә-nin) a blue-green pigment produced by Pseudomonas aeruginosa; it gives the color to blue pus.

pyocyst
(pi´o-sist) a cyst containing pus.

pyoderma
(pi″o-dur´mә) any purulent skin disease. chancriform pyoderma an eroded, ulcerated, nodular, solitary lesion with a rolled edge, usually on the face but sometimes elsewhere; it closely resembles a syphilitic chancre, is often associated with regional lymphadenopathy, ...

pyogenesis
(pi″o-jen´ә-sis) suppuration (def. 1).